425-2020 (COMIECO-XCI) dated June 23, 2020, and its Annexes be published: Annex I "Central American Technical Regulation RTCA 75.01.20:19 Petroleum Products. Superior Gasoline. Specifications", Annex II "Central American Technical Regulation RTCA 75.01.19:19 Petroleum Products. Regular Gasoline. Specifications and Annex III "Central American Technical Regulation RTCA 75.02.43:19 Biofuels. Biodiesel (B100) and its Blends with Diesel Fuel Oil", which are transcribed below:
RESOLUTION No. 425-2020 (COMIECO-XCI) THE COUNCIL OF MINISTERS FOR ECONOMIC INTEGRATION
That in accordance with articles 38, 39, and 55 of the Protocol to the General Treaty on Central American Economic Integration (Guatemala Protocol), amended by the Amendment of February 27, 2002, the Council of Ministers for Economic Integration (COMIECO) has under its purview the matters of Central American Economic Integration and, as such, it is responsible for approving the administrative acts applicable in the States Parties of the Economic Subsystem; That according to articles 7 and 26 of the Guatemala Protocol, the States Parties have agreed to establish a process of regional harmonization of technical regulations; That COMIECO approved various Central American Technical Regulations related to hydrocarbons, and the bodies of the Economic Integration made the decision to review and update them; That the States Parties, in their capacity as Members of the World Trade Organization (WTO), notified the Committee on Technical Barriers to Trade, in accordance with the provisions of the Agreement on Technical Barriers to Trade, of the draft Central American Technical Regulations that will be approved by means of this Resolution; That the States Parties granted a reasonable period to the Member States of the WTO to make comments on the referred drafts, according to what is established in numeral 4), paragraph 9 of article 2 of the Agreement on Technical Barriers to Trade, comments that were duly analyzed and addressed as pertinent; That in compliance with article 55, paragraph 3, of the Guatemala Protocol, the Regulations were consulted with the Consultative Committee on Economic Integration (CCIE); That COMIECO may meet virtually through a videoconference system, in which case, it is the responsibility of the Secretariat for Central American Economic Integration (SIECA) to collect the signature of each of the Ministers or Vice Ministers, as appropriate, in their respective country,
Based on articles 1, 3, 5, 7, 15, 26, 36, 37, 38, 39, 46, 52, and 55 of the Guatemala Protocol; and 19, 20 Bis, 32, and 32 Bis of the Regulation on the Organization and Functioning of the Councils: of Ministers for Economic Integration, Intersectoral of Ministers for Economic Integration, and Sectoral of Ministers for Economic Integration,
1. To modify, by total substitution, the Central American Technical Regulation RTCA 75.01.20:04 Petroleum Products. Superior Gasoline. Specifications, approved by Resolution No. 142-2005 (COMIECO-XXXII), of September 26, 2005; with the Central American Technical Regulation RTCA 75.01.20:19 Petroleum Products. Superior Gasoline. Specifications, in the form that appears in Annex I of this Resolution and which forms an integral part thereof.
2. To modify, by total substitution, the Central American Technical Regulation RTCA 75.01.19:06 Petroleum Products. Regular Gasoline. Specifications, approved by Resolution No. 169-2006 (COMIECO-XLIX), of July 28, 2006; with the Central American Technical Regulation RTCA 75.01.19:19 Petroleum Products. Regular Gasoline. Specifications, in the form that appears in Annex II of this Resolution and which forms an integral part thereof.
3. To modify, by total substitution, the Central American Technical Regulation RTCA 75.02.43:07 Biofuels. Biodiesel (B100) and its Blends with Diesel Fuel Oil. Specifications, approved by Resolution No. 198-2007 (COMIECO-XLIV), of April 24, 2007; with the Central American Technical Regulation RTCA 75.02.43:19 Biofuels. Biodiesel (B100) and its Blends with Diesel Fuel Oil. Specifications, in the form that appears in Annex III of this Resolution and which forms an integral part thereof.
4. For the values of the characteristics defined in Table 1 of each RTCA referenced above; each country may establish more restrictive values in its national legislation, in accordance with its policy for reducing emissions of polluting gases. In this case, the changes must be communicated to the States Parties for their knowledge and/or update.
The differences that exist in some of the fuel quality parameters between countries must not hinder the transport of people and the intraregional and international transport of goods.
5. To repeal:
i. The Annex of Resolution No. 142-2005 (COMIECO-XXXII), of September 26, 2005, by which the Central American Technical Regulation RTCA 75.01.20:04 Petroleum Products. Superior Gasoline.
Specifications was approved; ii. Annex 1 of Resolution No. 169-2006 (COMIECO-XLIX), of July 28, 2006, by which the Central American Technical Regulation RTCA 75.01.19:06 Petroleum Products. Regular Gasoline. Specifications was approved; iii. Resolution No. 198-2007 (COMIECO-XLIV) and its annex, of April 24, 2007, by which the Central American Technical Regulation RTCA 75.02.43:07 Biofuels. Biodiesel (B100) and its Blends with Diesel Fuel Oil. Specifications was approved; and, iv. Resolution No. 199-2007 (COMIECO-XLIV), of April 24, 2007, by which modifications by addition to the Central American Technical Regulation RTCA 75.01.19:06 Petroleum Products. Regular Gasoline. Specifications and to the Central American Technical Regulation RTCA 75.01.20:04 Petroleum Products. Superior Gasoline. Specifications were approved.
6. This Resolution shall enter into force for Costa Rica, El Salvador, Guatemala, Honduras, and Panama on February 1, 2021, and for Nicaragua on June 23, 2021, and shall be published by the States Parties.
Central America, June 23, 2020 The undersigned Secretary General of the Secretariat for Central American Economic Integration (SIECA) CERTIFIES: That this photocopy and the two (2) pages preceding it, printed only on their front side, as well as (3) attached annexes, printed only on their front side, all initialed and sealed with the seal of SIECA, faithfully reproduce Resolution No. 425-2020 (COMIECO-XCI), adopted by the Council of Ministers for Economic Integration, on June twenty-third, two thousand twenty, by means of a videoconference system, from whose originals they were reproduced. And to be sent to the States Parties for their corresponding publication, I issue this certified copy in Guatemala City, on August thirteenth, two thousand twenty.------------------------------------- Melvin Redondo Secretary General
TECHNICAL REGULATION RTCA 75.01.20:19 CENTRAL AMERICAN ICS 75.160.20 1st Review PETROLEUM PRODUCTS. SUPERIOR GASOLINE.
SPECIFICATIONS.
CORRESPONDENCE: This regulation has no correspondence with any international standard.
Edited by:
· Ministry of Economy. MINECO · Salvadoran Organization for Technical Regulation. OSARTEC · Secretariat of Economic Development. SDE · Ministry of Industry and Commerce Development. MIFIC · Ministry of Economy, Industry and Trade. MEIC · Ministry of Commerce and Industries. MICI INFORMATIVE REPORT The respective Technical Committees for Technical Regulation, through the technical regulation bodies of the Central American countries, are the entities responsible for conducting the study or adoption of the Central American Technical Regulations. They are composed of representatives from the Academic, Consumer, Private Enterprise, and Government Sectors.
This Central American Technical Regulation RTCA 75.01.20:19 Petroleum Products. Superior Gasoline. Specifications was approved by the Hydrocarbons Subgroup and the Standardization Measures Subgroup. The officialization of this Technical Regulation entails approval by the Council of Ministers for Economic Integration (COMIECO).
PARTICIPATING MEMBERS OF THE COMMITTEE For Guatemala Ministry of Energy and Mines For El Salvador Ministry of Economy For Nicaragua Ministry of Energy and Mines For Honduras Secretariat of Energy For Costa Rica Ministry of Environment and Energy For Panama National Secretariat of Energy 1. OBJECT To specify the physical and chemical characteristics that superior gasoline for automotive use must meet in the States Parties.
2. SCOPE OF APPLICATION It applies to the petroleum derivative known as superior gasoline, consisting of a complex mixture of different types of hydrocarbons (paraffinic, naphthenic, olefinic, and aromatic), whose distillation (boiling) range varies between 30º C and 225º C.
3. DOCUMENTS TO CONSULT For the proper interpretation and application of this RTCA, the following document must be consulted:
ASTM D 4814-19 (Class B): Standard Specification for Automotive Spark-Ignition Engine Fuel (Standard Specification for Automotive Spark-Ignition Engine Fuel. Specifically for the fuel described according to its vapor pressure and distillation as Class B).
4. DEFINITIONS For the purposes of interpreting this technical regulation, the following definitions shall be considered:
4.1. Superior gasoline: gasoline that, among other characteristics, has a research octane number (RON) of 95 minimum and also does not contain lead as an additive to increase this property, but contains inherent amounts of lead at a maximum of 0.013 g Pb/L of fuel.
4.2. API gravity: is a special function of relative density (specific gravity) at 15.56º C/15.56º C (60ºF/60º F), defined as the ratio of the mass of a given volume of a liquid at 15.56º C (60º F) to the mass of an equal volume of pure water at the same temperature. API gravity is calculated as follows:
API Gravity (ºAPI) = (141.5/d15.56ºC / 15.56ºC) - 131.5 Where: d15.56 ºC/15.56 ºC: Relative density at 15.56 ºC/15.56ºC 4.3. Density: mass/volume ratio measured at 15 °C, and the unit of measurement is kg/m³.
4.4. Paraffinic hydrocarbons: is the homologous series of alkanes with the general formula CnH2n+2 and their isomers, known in the petroleum industry as paraffins. They are saturated hydrocarbons (presenting only single bonds between two carbon atoms in the molecule: C-C) that have their configuration in normal or branched chains (isomers).
4.5. Naphthenic hydrocarbons: make up the homologous series of cycloalkanes with the general formula CnH2n, known in the petroleum industry as naphthenics. They are also saturated hydrocarbons, but contain one or more rings in their molecular structure.
4.6. Aromatic hydrocarbons: are unsaturated hydrocarbons that present one or more benzene rings in their molecule.
4.7. Olefinic hydrocarbons: are unsaturated hydrocarbons (presenting one or more double bonds between two carbon atoms in the molecule: C=C) that have a configuration in normal or branched chains.
4.8. Research octane number (RON): corresponds to its acronym in English Research Octane Number, it is the % volumetric of iso-octane (2,2,4-trimethylpentane) with a base of 100 (one hundred) octanes in a mixture of n-heptane with a base of 0 (zero) octanes, which detonates with the same intensity as the sample when they are compared using a standard engine.
4.9. Motor octane number (MON): corresponds to its acronym in English Motor Octane Number, the definition of this characteristic is the same as for RON, but the test conditions are more severe, using higher revolutions of the standard engine.
4.10. Octane index or antiknock index: known in English as Octane Index or Antiknock Index, is calculated as follows: (RON+MON) /2.
4.11. Percentage (%) evaporated, final boiling point, residue, and percentage (%) recovered: for these definitions, refer to the latest valid edition of ASTM D 86.
4.12. Reid Vapor Pressure (RVP): is the absolute vapor pressure obtained through a test that measures the pressure of a sample inside a cylinder at a temperature of 37.8º C (100º F) in a volumetric ratio of 4 (four) parts liquid to 1 (one) part vapor [ratio (liquid/vapor) = 4]; this property measures the tendency of a liquid to vaporize.
5. SYMBOLS AND ABBREVIATIONS 5.1 API : American Petroleum Institute.
5.2 ºAPI : API Gravity degrees.
5.3 ASTM : American Society for Testing and Materials.
5.4 ºC/ºF : Degrees Celsius/Degrees Fahrenheit.
5.5 g Pb/L : grams of lead per liter.
5.6 EN : European Norm.
5.7 g P / L : grams of phosphorus per liter.
5.8 h : hour(s).
5.9 kg/m3 : kilogram per cubic meter.
5.10 kPa : kilopascal, equivalent to 1000 Pascals.
5.11 máx. : maximum.
5.12 MPMS : Manual of Petroleum Measurement Standards, 5.13 mín. : minimum.
5.14 mg/100 mL : milligrams per 100 milliliters.
5.15 UNE : A Spanish Standard.
6. REQUIREMENTS General considerations:
The ASTM methods indicated in the table are those approved as referee methods. Other acceptable methods are indicated in numeral 8.
The results must be reported with the number of decimal figures indicated in each method and not necessarily with the number of decimals appearing in this specification table, considering the reproducibility and repeatability established in each test method.
For the values of the characteristics defined in Table 1, each country may establish more restrictive values in its national legislation, in accordance with its policy for reducing emissions of polluting gases. In this case, the changes must be communicated to the States Parties for their knowledge and/or update.
The differences that exist in some of the fuel quality parameters between countries must not hinder the transport of people and the intraregional and international transport of goods.
Table 1. Physical-chemical specifications for superior gasoline
| Characteristic | Units | ASTM Method | Countries | Values |
|---|---|---|---|---|
| Appearance | ---------- | D 4176 | All | Clear and bright, free of water and |
| Characteristic | Units | ASTM Method | Countries | Values |
|---|---|---|---|---|
| particles | ||||
| Additives (a) | ---------- | ---------- | All | Report (b) |
| Color | ---------- | Visual | See Note 1 | colorless (without adding dye) |
| Lead content | g Pb/L | D 3237 | All | 0.013 máx. |
| Copper strip corrosion, 3 h, 50ºC | ---------- | D 130 | All | No. 1 máx. |
| Oxidation stability, decomposition time | Minutes | D 525 | See Note 2 | 240 mín. |
| Total sulfur content | mg/kg (% mass) | D 2622 | Costa Rica | 50 (0.005) máx. |
| Panama | 150 (0.015) máx. | |||
| Guatemala El Salvador Honduras Nicaragua | 500 (0.050) máx. | |||
| REID vapor pressure at 37.8 ºC | kPa (psi) | D 323 | All | 69 (10) máx. |
| API gravity at 15.56 ºC (60 ºF) or | ºAPI | D 287 | All | Report (b) |
| Density at 15ºC | kg/m³ | D 1298 | ||
| Solvent-washed gums | mg/100 mL | D 381 | See Note 3 | 4 máx. |
| Distillation: | D 86 | All | ||
| 10% evaporated | ºC | 65 máx. | ||
| 50% evaporated | ºC | 77 - 118 | ||
| 90% evaporated | ºC | 190 máx. | ||
| Final boiling point | ºC | 225 máx. | ||
| Residue | % volume | 2 máx. | ||
| Octane number: RON | ---------- | D 2699 | All | 95.0 mín. |
| MON (d) | ---------- | D 2700 | All See Note 4 | Report |
| Octane index (RON + MON)/2 (d) | ---------- | D 2699 and D 2700 | All | 89.0 mín. |
| Aromatics content | % volume | D 6839 | See Note 5 | 50.0 máx. |
| Characteristic | Units | ASTM Method | Countries | Values |
|---|---|---|---|---|
| Olefins content | % volume | D 6839 | See Note 6 | 30.0 máx. |
| Benzene content | % volume | D 3606 | Costa Rica Panama | 1.5 máx. |
| Guatemala Honduras | 2.5 máx. | |||
| Nicaragua El Salvador | 5.0 máx. | |||
| Oxygen (c) | % volume | D 4815 | Panama El Salvador | 0.7 máx. |
| Costa Rica Guatemala Honduras Nicaragua | 2.7 máx. | |||
| Phosphorus content | mg/L | D 3231 | See Note 7 | 1.3 máx. |
| Manganese content | mg/L | D 3831 | Costa Rica Honduras Panama | 0.25 máx. |
| El Salvador | 2.0 máx. | |||
| Guatemala | 2.5 máx. | |||
| Nicaragua | Report |
Note 1: For Nicaragua, the color is established as red.
Note 2: For Costa Rica, the value is established as 360 mín.
Note 3: For Panama, the value is established as 3 máx.
Note 4: For Costa Rica, the MON value is established as 83.0 mín.
Note 5: For Costa Rica, the value is established as 35.0 máx.
Note 6: For Costa Rica, the value is established as 18.0 máx.
Note 7: For Nicaragua, the value is established as "report." (a) The information that must be submitted for each additive added to this product is as follows:
- Material Safety Data Sheet (Material Safety Data Sheet).
- Added proportion of the additive (blend).
- Property of the product that the additive generates or improves, e.g., antifoaming, antioxidant, detergent, etc.
If the supply source remains the same, the information must be provided only once, but the competent authority must be informed each time the additive is changed and also when the supply source is changed.
For Costa Rica, Guatemala, Honduras, Panama, and El Salvador, it is established that additives containing metals must not be intentionally added to gasoline; the foregoing does not apply to Nicaragua.
For Costa Rica, the maximum value for iron content is established as "not detectable," being able to use the UNE-EN 16136 method.
For Guatemala and Nicaragua, the value for iron content is established as "report," being able to use the UNE-EN 16136 method.
In the case of Panama, the MTBE test must be measured with a maximum value of 0.6% volume, using the ASTM D 4815 or ASTM D 6730 method.
(b) For cases to be reported, the result obtained according to the described method must be indicated. Each country may establish the limits for each of these parameters and apply its national legislation, and must inform the Competent Authorities of the States Parties.
(c) Indicate the common name of the oxygenates used, detailing each compound and percentage by volume. Report at least the following compounds:
· Isopropyl alcohol.
· Isobutyl alcohol.
· Tert-butyl alcohol.
· Esters (5 or more carbon atoms).
(d) The analysis of MON and octane index shall be performed at least once every three (3) months.
7. SAMPLING For sample taking, the latest valid edition of the following ASTM or API standards must be used:
ASTM D 4057: Standard Practice for Manual Sampling of Petroleum and Petroleum Products.
API MPMS 8.1: Standard Practice for Manual Sampling of Petroleum and Petroleum Products.
ASTM D 5842: Standard Practice for Sampling and Handling of Fuels for Volatility Measurement.
API MPMS 8.4: Standard Practice for Sampling and Handling of Fuels for Volatility Measurement.
8. TEST METHODS For the tests, the latest valid edition of the following UNE-EN or ASTM standards in English shall be used; the translation and use of these shall be the responsibility of the user. They shall be accepted as long as they are not approved as such and/or there are no Central American standards or technical regulations.
8.1. ASTM D 86: Standard Test Method for Distillation of Petroleum Products at Atmospheric Pressure.
8.2. ASTM D 130: Standard Test Method for Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test.
8.3. ASTM D 287: Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method).
8.4. ASTM D 323: Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method).
8.5. ASTM D 381: Standard Test Method for Existent Gum in Fuels by Jet Evaporation.
8.6. ASTM D 525: Standard Test Method for Oxidation Stability of Gasoline (Induction Period Method).
8.7. ASTM D 1266: Standard Test Method for Sulfur in Petroleum Products (Lamp Method).
8.8. ASTM D 1298: Standard Practice for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method.
8.9. ASTM D 1319: Standard Test Method for Hydrocarbons Types in Liquid Petroleum Products by Fluorescent Indicator Adsorption.
8.10. ASTM D 2622: Standard Test Method for Sulfur in Petroleum Products by X-Ray Spectrometry.
8.11. ASTM D 2699: Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel.
8.12. ASTM D 2700: Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel.
8.13. ASTM D 3120: Standard Test Method for Trace Quantities of Sulfur in Light Liquid Petroleum Hydrocarbons by Oxidate Microcoulometry.
8.14. ASTM D 3227: Standard Test Method for (Thiol Mercaptan) Sulfur in Gasoline, Kerosine, Aviation Turbine, and Distillate Fuels (Potentiometric Method).
8.15. ASTM D 3231: Standard Test Method for Phosphorus in Gasoline.
8.16. ASTM D 3237: Standard Test Method for Lead in Gasoline by Atomic Absorption Spectroscopy.
8.17. ASTM D 3341: Standard Test Method for Lead in Gasoline (Iodine Monochloride Method).
8.18. ASTM D 3348: Standard Test Method for Rapid Field Test for Trace Lead in Unleaded Gasoline (Colorimetric Method).
8.19. ASTM D 3606: Standard Test Method for Determination of Benzene and Toluene in Finished Motor and Aviation Gasoline by Gas Chromatography.
8.20. ASTM D 3831: Standard Test Method for Manganese in Gasoline by Atomic Absorption Spectroscopy.
8.21. ASTM D 4052: Standard Test Method for Density and Relative Density of Liquids by Digital Meter.
8.22. ASTM D 4176: Standard Test Method for Free Water and Particulate Contamination in Distillate Fuels (Visual Inspection Procedures).
8.23. ASTM D 4294: Standard Test Method for Sulfur in Petroleum Products by Energy-Dispersive X-Ray Fluorescence Spectroscopy.
8.24. ASTM D 4420: Standard Test Method for Determination of Aromatics in Finish Gasoline by Gas Chromatography.
8.25. ASTM D 4815: Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, Tertiary-Amyl Alcohol and C1 to C4 Alcohols in Gasoline by Gas Chromatography.
8.26. ASTM D 4952: Standard Test Method for Qualitative Analysis for Active Sulfur Species in Fuels and Solvents (Doctor Test).
8.27. ASTM D 4953: Standard Test Method for Vapor Pressure of Gasoline and Gasoline-Oxygenate Blends (Dry Method).
8.28. ASTM D 5059: Standard Test Method for Lead in Gasoline by X-Ray Spectroscopy.
8.29. ASTM D 5185: Standard Test Method for Multielement Determination of Used and Unused Lubricating Oils and Base Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES).
8.30. ASTM D 5191: Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method).
8.31. ASTM D 5453: Standard Test Method for Determination of Total Sulfur in Light Hydrocarbons, Motor Fuels and Oils by Ultraviolet Fluorescence.
8.32. ASTM D 5580: Standard Test Method for Determination of Benzene, Toluene, Ethylbenzene, p/m-Xylene, o-Xylene, C9 and Heavier Aromatics, and Total Aromatics in Finished Gasoline by Gas Chromatography.
8.33. ASTM D 5599: Standard Test Method for Determination of Oxygenates in Gasoline by Gas Chromatography and Oxygen Selective Flame Ionization Detection.
8.34. ASTM D 5769: Standard Test Method for Determination of Benzene, Toluene, and Total Aromatics in Finished Gasolines by Gas Chromatography/Mass Spectrometry.
8.35. ASTM D 5708: Standard Test Methods for Determination of Nickel, Vanadium, and Iron in Crude Oils and Residual Fuels by Inductively Coupled Plasma (ICP) Atomic Emission Spectrometry.
Note 1. The ASTM D 5708 method is designed to be applied to a low-explosivity fluid. Gasoline, on the other hand, is a high-explosivity compound.
Applying the ASTM D 5708 method to gasoline samples, in the presence of a plasma, implies a safety risk.
8.36. ASTM D 5845: Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, Methanol, Ethanol and Tert-Butanol in Gasoline by Infrared Spectroscopy.
8.37. ASTM D 5863: Standard Test Methods for Determination of Nickel, Vanadium, Iron, and Sodium in Crude Oils and Residual Fuels by Flame Atomic Absorption Spectrometry.
8.38. ASTM D 6550: Standard Test Method for Determination of Olefin Content of Gasolines by Supercritical-Fluid Chromatography.
8.39. ASTM D 6730: Standard Test Method for Determination of Individual Components in Spark Ignition Engine Fuels by 100-Metre Capillary (with Precolumn) High-Resolution Gas Chromatography.
8.40. ASTM D 6733: Standard Test Method for Determination of Individual Components in Spark Ignition Engine Fuels by 50-Metre Capillary High-Resolution Gas Chromatography.
8.41. ASTM D 6839: Standard Test Method for Hydrocarbon Types, Oxygenated Compounds, and Benzene in Spark Ignition Engine Fuels by Gas Chromatography.
8.42. UNE-EN 16136: Determination of iron and manganese content in unleaded gasolines.
9. SURVEILLANCE AND VERIFICATION The surveillance and verification of this technical regulation corresponds to the competent authorities of each of the State Parties.
-END OF CENTRAL AMERICAN TECHNICAL REGULATION
CENTRAL AMERICAN TECHNICAL REGULATION RTCA 75.01.19:19 ICS 75.160.20 1st. Revision PETROLEUM PRODUCTS. REGULAR GASOLINE. SPECIFICATIONS.
CORRESPONDENCE: This regulation has no correspondence with any international standard.
Edited by:
· Ministry of Economy. MINECO · Salvadoran Organization for Technical Regulation. OSARTEC · Secretariat of Economic Development. SDE · Ministry of Development, Industry and Commerce. MIFIC · Ministry of Economy, Industry and Commerce. MEIC · Ministry of Commerce and Industries. MICI REPORT The respective Technical Committees for Technical Regulation, through the Technical Regulation bodies of the Central American countries, are the agencies responsible for conducting the study or adoption of the Central American Technical Regulations. They are composed of representatives from the Academic, Consumer, Private Enterprise, and Government Sectors.
This Central American Technical Regulation RTCA 75.01.19:19 Petroleum Products Regular Gasoline. Specifications, was approved by the Hydrocarbons Subgroup and the Standardization Measures Subgroup. The officialization of this Technical Regulation entails approval by the Council of Ministers of Economic Integration (COMIECO).
PARTICIPATING MEMBERS OF THE COMMITTEE For Guatemala Ministry of Energy and Mines For El Salvador Ministry of Economy For Nicaragua Ministry of Energy and Mines For Honduras Secretariat of Energy For Costa Rica Ministry of Environment and Energy For Panama National Secretariat of Energy 1. OBJECTIVE To specify the physical and chemical characteristics that regular gasoline for automotive use must meet in the State Parties.
2. SCOPE OF APPLICATION It applies to the petroleum derivative known as regular gasoline, formed by a complex mixture of different types of hydrocarbons (paraffinic, naphthenic, olefinic, and aromatic), whose distillation (boiling) range varies between 30º C and 225º C.
3. DOCUMENTS TO CONSULT For the proper interpretation and application of this RTCA, the following document must be consulted:
ASTM D 4814-19 (Class B): Standard Specification for Automotive Spark-Ignition Engine Fuel. Specifically, the fuel described according to its vapor pressure and distillation as Class B.
4. DEFINITIONS For the purposes of interpreting this Central American technical regulation, the following definitions shall be taken into consideration:
4.1. Regular gasoline: gasoline which, among other characteristics, has a minimum research octane number (RON) of 88/91 and does not contain lead as an additive to increase this property, but contains inherent amounts of lead at a maximum of 0.013 g Pb/L of fuel.
4.2. API gravity (Gravedad API): is a special function of the relative density (specific gravity) at 15.56º C/15.56º C (60ºF/60º F), defined as the ratio of the mass of a given volume of a liquid at 15.56º C (60º F) to the mass of an equal volume of pure water at the same temperature. The API gravity (Gravedad API) is calculated as follows:
API Gravity (ºAPI) = (141.5/d15.56ºC / 15.56ºC) - 131.5 Where: d15.56 ºC/15.56 ºC: Relative density at 15.56 ºC/15.56ºC 4.3. Density: mass/volume ratio measured at 15 °C and the unit of measure is kg/m³.
4.4. Paraffinic hydrocarbons: is the homologous series of alkanes with the general formula CnH2n+2 and their isomers, known in the petroleum industry as paraffins. They are saturated hydrocarbons (presenting only single bonds between two carbon atoms in the molecule: C-C) that have their configuration in normal or branched chains (isomers).
4.5. Naphthenic hydrocarbons: constitute the homologous series of cycloalkanes with the general formula CnH2n, known in the petroleum industry as naphthenics. They are also saturated hydrocarbons, but contain one or more rings in their molecular structure.
4.6. Aromatic hydrocarbons: are unsaturated hydrocarbons that present one or more benzene rings in their molecule.
4.7. Olefinic hydrocarbons: are unsaturated hydrocarbons (present one or more double bonds between two carbon atoms in the molecule: C=C) that have a configuration in normal or branched chains.
4.8. Research octane number (RON): this corresponds to its initials in English, Research Octane Number. It is the % by volume of iso-octane (2,2,4-trimethylpentane) based on 100 (one hundred) octane in a mixture of n-heptane based on 0 (zero) octane, which detonates with the same intensity as the sample, when they are compared using a standard engine.
4.9. Motor octane number (MON): this corresponds to its initials in English, Motor Octane Number. The definition of this characteristic is the same as for RON, but the test conditions are more severe, using higher revolutions of the standard engine.
4.10. Octane index or antiknock index: known in English as Octane Index or Antiknock Index, is calculated as follows: (RON+MON) /2.
4.11. Percentage (%) evaporated, final boiling point, residue, and percentage (%) recovered: for these definitions, refer to the latest valid edition of ASTM D 86.
4.12. Reid Vapor Pressure (RVP): is the absolute vapor pressure obtained through a test that measures the pressure of a sample inside a cylinder at a temperature of 37.8º C (100º F) in a volumetric ratio of 4 (four) parts liquid to 1 (one) part vapor [ratio (liquid/vapor) = 4]. This property measures the tendency of a liquid to vaporize.
5. SYMBOLS AND ABBREVIATIONS 5.1 API : American Petroleum Institute.
5.2 ºAPI : Degrees API (API Gravity (Gravedad API)).
5.3 ASTM : American Society for Testing and Materials.
5.4 ºC/ºF : Degrees Celsius/Degrees Fahrenheit.
5.5 EN : European Norm.
5.6 g Pb/L : grams of lead per liter.
5.7 g P / L : grams of phosphorus per liter.
5.8 H : hour(s).
5.9 kg/m3 : kilogram per cubic meter.
5.10 kPa : kilopascal, equivalent to 1000 Pascals.
5.11 máx. : maximum.
5.12 MPMS : Manual of Petroleum Measurements Standards.
5.13 mín. : minimum.
5.14 mg/100 mL : milligrams per 100 milliliters.
5.15 UNE : A Spanish Standard (Una Norma Española).
6. REQUIREMENTS General considerations:
The ASTM methods indicated in the table are approved as referee methods. Other acceptable methods are indicated in numeral 8.
Results must be reported with the number of decimal figures indicated by each method and not necessarily with the number of decimals appearing in this specification table, considering the reproducibility and repeatability established in each test method.
For the values of the characteristics defined in Table 1, each country may establish more restrictive values in its national legislation, in accordance with its policy for reducing polluting gas emissions. In this case, the changes must be communicated to the State Parties for their knowledge and/or updating.
Differences that exist in some of the fuel quality parameters between countries must not obstruct the transportation of people, or the intraregional and international transportation of goods.
The table specifying the physicochemical characteristics established by this regulation for regular gasoline is presented below.
Table 1. Physicochemical specifications for regular gasoline
| Characteristic | Units | ASTM Method | Countries | Values |
|---|---|---|---|---|
| Appearance | ---------- | D 4176 | All | Clear and bright, free of water and particles. |
| Characteristic | Units | ASTM Method | Countries | Values |
|---|---|---|---|---|
| Additives (a) | ---------- | -------- | All | Report (b) |
| Color | ---------- | Visual | See note 1 | Red |
| Lead content | g Pb/L | D 3237 | All | 0.013 max. |
| Copper strip corrosion, 3 h, 50ºC | ---------- | D 130 | All | No. 1 max. |
| Oxidation stability, Decomposition time | Minutes | D 525 | See note 2 | 240 min. |
| Total sulfur content | mg/kg (% mass) | D 2622 | Costa Rica | 50 (0.005) max. |
| Panama | 150 (0.015) max. | |||
| Guatemala El Salvador Honduras Nicaragua | 500 (0.050) max. | |||
| REID vapor pressure at 37.8 ºC | kPa (psi) | D 323 | All | 69 (10) max. |
| API gravity (Gravedad API) at 15.56 ºC (60 ºF) or Density at 15ºC | ºAPI kg/m³ | D 287 D 1298 | All | Report(b) |
| Solvent washed gums | mg/100 mL | D 381 | See note 3 | 4 max. |
| Distillation: | ºC | D 86 | All | 65 max. |
| 10% evaporated | ||||
| 50% evaporated | ºC | 77 - 118 | ||
| 90% evaporated | ºC | 190 max. | ||
| Final boiling point | ºC | 225 max. | ||
| Residue | % volume | 2 max. | ||
| Octane number: | ---------- | D 2699 | See note 4 | 91.0 min. |
| RON | ||||
| MON (d) | ---------- | D 2700 | See note 5 | Report |
| Octane Index: (RON + MON)/2 (d) | ---------- | D 2699 and D 2700 | See note 6 | 85.0 min. |
| Aromatics content | % volume | D 6839 | See note 7 | 50.0 max. |
| Olefins content | % volume | D 6839 | See note 8 | 30.0 max. |
| Benzene content | % volume | D 3606 | Costa Rica Panama | 1.5 max. |
| Guatemala Honduras | 2.5 max. | |||
| Nicaragua El Salvador | 5.0 max. |
| Characteristic | Units | ASTM Method | Countries | Values |
|---|---|---|---|---|
| Oxygen (c) | % volume | D 4815 | Panama El Salvador | 0.7 max. |
| Costa Rica Guatemala Honduras Nicaragua | 2.7 max. | |||
| Phosphorus content | mg/L | D 3231 | See note 9 | 1.3 max. |
| Manganese content | mg/L | D 3831 | Costa Rica Honduras Panama | 0.25 max. |
| El Salvador | 2.0 max. | |||
| Guatemala | 2.5 max. | |||
| Nicaragua | Report |
Note 1: For Nicaragua and Guatemala the color is established as orange.
Note 2: For Costa Rica the value is established as 360 min.
Note 3: For Panama the value is established as 3 max.
Note 4: For Nicaragua and Honduras the value is established as 88 min. Guatemala will apply the value of 91 min. after one year has elapsed from the effective date of the technical regulation.
Note 5: For Costa Rica the MON value is established as 79 min.
Note 6: For Honduras and Nicaragua the value is established as 83 min. Guatemala will continue applying the value of 83 min. for one year from the effective date of the technical regulation.
Note 7: For Costa Rica the value is established as 35.0 max.
Note 8: For Costa Rica the value is established as 18.0 max.
Note 9: For Nicaragua the value is established as "report." (a) The information that must be presented for each additive added to this product is the following:
- Material Safety Data Sheet.
- Added proportion of the additive (blend).
- Property of the product that the additive generates or improves, e.g.: antifoaming, antioxidant, detergent, etc.
If the supply source is maintained, the information must be provided only once, but the competent authority must be informed every time the additive changes and also when the supply source changes.
For Costa Rica, Guatemala, Honduras, Panama, and El Salvador, it is established that additives containing metals must not be intentionally added to gasoline; the foregoing does not apply to Nicaragua.
For Costa Rica, the maximum value for iron content is established as "not detectable," being able to use the UNE-EN 16136 method.
For Guatemala and Nicaragua, the value for iron content is established as "report," being able to use the UNE-EN 16136 method.
In the case of Panama, the MTBE test must be measured with a maximum value of 0.6% volume, using the ASTM D 4815 or ASTM D 6730 method.
(b) For cases requiring reporting, the result obtained according to the described method must be indicated. Each country may establish the limits for each of these parameters and apply the provisions of its national legislation, and must inform the competent authorities of the State Parties.
(c) Indicate the common name of the oxygenates used, detailing each compound and percentage by volume. Report at least the following compounds:
- iso-Propyl alcohol - iso-Butyl alcohol - tert-Butyl alcohol - Esters (5 or more carbon atoms) (d) The MON and octane index analysis shall be performed at least once every three (3) months.
7. SAMPLING For sample taking, the latest valid edition of the following ASTM or API standards must be used:
ASTM D 4057: Standard Practice for Manual Sampling of Petroleum and Petroleum Products.
API MPMS 8.1: Standard Practice for Manual Sampling of Petroleum and Petroleum Products.
ASTM D 5842: Standard Practice for Sampling and Handling of Fuels for Volatility Measurement.
API MPMS. 8.4: Standard Practice for Sampling and Handling of Fuels for Volatility Measurement.
8. TEST METHODS For the tests, the latest valid edition of the following UNE-EN or ASTM standards in English shall be used; the translation and use thereof shall be the responsibility of the user, and shall be accepted as long as they are not homologated and/or there are no Central American technical standards or regulations.
8.1. ASTM D 86: Standard Test Method for Distillation of Petroleum Products at Atmospheric Pressure.
8.2. ASTM D 130: Standard Test Method for Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test.
8.3. ASTM D 287: Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method).
8.4. ASTM D 323: Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method).
8.5. ASTM D 381: Standard Test Method for Existent Gum in Fuels by Jet Evaporation.
8.6. ASTM D 525: Standard Test Method for Oxidation Stability of Gasoline (Induction Period Method).
8.7. ASTM D 1266: Standard Test Method for Sulfur in Petroleum Products (Lamp Method).
8.27. ASTM D 4953: Standard Test Method for Vapor Pressure of Gasoline and Gasoline-Oxygenate Blends (Dry Method).
8.28. ASTM D 5059: Standard Test Method for Lead in Gasoline by X-Ray Spectroscopy.
8.29. ASTM D 5185: Standard Test Method for Multielement Determination of Used and Unused Lubricating Oils and Base Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES).
8.30. ASTM D 5191: Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method).
8.31. ASTM D 5453: Standard Test Method for Determination of Total Sulfur in Light Hydrocarbons, Motor Fuels and Oils by Ultraviolet Fluorescence.
8.32. ASTM D 5580: Standard Test Method for Determination of Benzene, Toluene, Ethylbenzene, p/m-Xylene, o-Xylene, C9 and Heavier Aromatics, and Total Aromatics in Finished Gasoline by Gas Chromatography.
8.33. ASTM D 5599: Standard Test Method for Determination of Oxygenates in Gasoline by Gas Chromatography and Oxygen Selective Flame Ionization Detection.
8.34. ASTM D 5769: Standard Test Method for Determination of Benzene, Toluene, and Total Aromatics in Finished Gasolines by Gas Chromatography/Mass Spectrometry.
8.35. ASTM D 5708: Standard Test Methods for Determination of Nickel, Vanadium, and Iron in Crude Oils and Residual Fuels by Inductively Coupled Plasma (ICP) Atomic Emission Spectrometry.
Note 1. The ASTDM D 5708 method is designed to be applied to a low-explosivity fluid. Gasoline, on the other hand, is a high-explosivity compound.
Applying the ASTM D 5708 method to gasoline samples, in the presence of a plasma, involves a safety risk.
8.36. ASTM D 5845: Standard Test Method for Determination of MTBE, ETBE, TAME, DIPE, Methanol, Ethanol and Tert-Butanol in Gasoline by Infrared Spectroscopy.
8.37. ASTM D 5863: Standard Test Methods for Determination of Nickel, Vanadium, Iron, and Sodium in Crude Oils and Residual Fuels by Flame Atomic Absorption Spectrometry.
8.38. ASTM D 6550: Standard Test Method for Determination of Olefin Content of Gasolines by Supercritical-Fluid Chromatography.
8.39. ASTM D 6730: Standard Test Method for Determination of Individual Components in Spark Ignition Engine Fuels by 100-Metre Capillary (with Precolumn) High-Resolution Gas Chromatography.
8.40. ASTM D 6733: Standard Test Method for Determination of Individual Components in Spark Ignition Engine Fuels by 50-Metre Capillary High-Resolution Gas Chromatography.
8.41. ASTM D 6839: Standard Test Method for Hydrocarbon Types, Oxygenated Compounds, and Benzene in Spark Ignition Engine Fuels by Gas Chromatography.
8.42. UNE-EN 16136: Determination of iron and manganese content in unleaded gasolines.
9. SURVEILLANCE AND VERIFICATION The surveillance and verification of this technical regulation corresponds to the competent authorities of each of the States Parties.
-END OF CENTRAL AMERICAN TECHNICAL REGULATION
CENTRAL AMERICAN TECHNICAL REGULATION RTCA 75.02.43:19 ICS 75.160.40 1st. Revision BIOFUELS. BIODIESEL (B100) AND ITS BLENDS WITH DIESEL FUEL OIL. SPECIFICATIONS.
CORRESPONDENCE: This regulation has no correspondence with any international standard.
Edited by:
. Ministry of Economy. MINECO . Salvadoran Organization for Technical Regulation. OSARTEC . Secretariat of Economic Development. SDE . Ministry of Development, Industry and Commerce. MIFIC . Ministry of Economy, Industry and Commerce. MEIC . Ministry of Commerce and Industries. MICI REPORT The respective Technical Committees for Technical Regulation, through the Technical Regulation bodies of the Central American countries, are the organizations responsible for carrying out the study or adoption of Central American Technical Regulations. They are composed of representatives from the Academic, Consumer, Private Enterprise, and Government Sectors.
This Central American Technical Regulation RTCA 75.02.43:19 Biofuels. Biodiesel (B100) and its Blends with Diesel Fuel Oil. Specifications, was approved by the Hydrocarbons Subgroup and the Standardization Measures Subgroup. The officialization of this Technical Regulation entails approval by the Council of Ministers of Economic Integration (COMIECO).
PARTICIPATING MEMBERS OF THE COMMITTEE For Guatemala Ministry of Energy and Mines For El Salvador Ministry of Economy For Nicaragua Ministry of Energy and Mines For Honduras Secretariat of Energy For Costa Rica Ministry of Environment and Energy For Panama National Secretariat of Energy.
1. OBJECT To specify the physicochemical characteristics that biodiesel (B100) must meet for use or commercialization as a fuel in the States Parties.
2. SCOPE OF APPLICATION It applies to biodiesel (B100) for use or commercialization as a fuel, in diesel engines designed or adapted to use it in pure form or as a blend component with the diesel fuel oil specified in RTCA 75.02.17:19 in its current version.
3. DOCUMENTS TO CONSULT For the proper interpretation and application of this RTCA, the following documents must be consulted:
ASTM D 6751-07: Standard Specification for Biodiesel Fuel Blend Stock (B100) for Middle Distillate Fuels.
EN 14214-2003: Automotive fuels - Fatty acid methyl esters (FAME) for diesel engines - Requirements and test methods.
4. DEFINITIONS For the purposes of interpreting this Central American technical regulation, the following definitions shall be considered:
4.1. API (API Gravity): is a special function of the relative density (specific gravity) at 15.56 °C/15.56 °C (60 °F/60 °F), defined as the ratio of the mass of an equal volume of pure water at the same temperature. API gravity is calculated as follows:
API Gravity (°API) = (141.5 / d15.56 °C / 15.56 °C) - 131.5 Where: d15.56 °C / 15.56 °C: Relative density at 15.56 °C / 15.56 °C 4.2. Biodiesel: is any mixture of mono-alkyl esters of fatty acids, from oils or fats of vegetable or animal origin, designated as B100.
4.3. Sulfated ash: residue remaining after the sample has been carbonized and subsequently treated with sulfuric acid, heated to dryness, and brought to constant weight.
4.4. Density: mass/volume ratio measured at a specific temperature, whose unit of measurement is kg/m3.
4.5. Esters: are the products of the complete reaction between a fatty acid and an alcohol.
4.6. Free glycerin: is the amount of glycerin remaining in the fuel.
4.7. Total glycerin: is the sum of the free glycerin and the glycerin portion of an oil or fat that has not reacted or has partially reacted.
4.8. Cetane number: is the volume fraction or % volume of n-hexadecane (cetane) in a blend with 1-methyl-naphthalene, that produces a fuel with the same ignition quality as a sample. Physically, the cetane number represents the ignition delay, meaning a higher cetane number implies a shorter autoignition delay of the fuel.
4.9. Acid number: value that expresses the acidity of a substance, equivalent to the number of milligrams of potassium hydroxide needed to neutralize the acids present in one gram of substance.
4.10. Biodiesel blend (BXX): is the blend of biodiesel (B100) with diesel fuel oil, designated as BXX, where XX represents the percentage (%) by volume of biodiesel present in the blend.
4.11. Cloud point (punto de enturbiamiento): is the lowest temperature at which mist or turbidity is observed in the sample, indicating the beginning of its crystallization, when it is subjected to continuous cooling.
4.12. Flash point (punto de inflamación): is the lowest temperature at which the product vaporizes in sufficient quantity to form a mixture with air capable of igniting instantaneously when a flame is brought near it.
4.13. Absolute viscosity: is the measure of a substance's resistance to flow or the force per unit area required to maintain the fluid at a constant velocity in a given space, expressed in mm2/s.
4.14. Kinematic viscosity: is the quotient of the absolute viscosity divided by the density, or the time necessary for a given volume of substance to travel a given length.
5. SYMBOLS AND ABBREVIATIONS 5.1 API : American Petroleum Institute.
5.2 ºAPI : Degrees API (API Gravity).
5.3 ASTM : American Society for Testing and Materials.
5.4 ºC/ºF : Degrees Celsius/Degrees Fahrenheit.
5.5 EN : European Norm.
5.6 h : hour(s).
5.7 kg/m3 : kilogram per cubic meter.
5.8 max. : maximum.
5.9 mg KOH/g : milligrams of potassium hydroxide per gram.
5.10 min. : minimum.
5.11 mm2/s : millimeters per second.
5.12 mg/kg : milligrams per kilogram.
5.13 MPMS : Manual of Petroleum Measurement Standards.
5.14 UOP : Universal Oil Products.
6. USE OF B100 AND BLEND RATIO Each State Party shall have the authority to define whether it uses biodiesel (B100) in diesel engines designed or adapted to use it in pure form, as a blend component with diesel fuel oil, or both.
However, the product of a blend ratio of up to 0.05 volume fraction (5% volume) of biodiesel (B100) with diesel fuel oil must comply with the specifications of RTCA 75.02.17:19 Petroleum Products. Diesel Fuel Oil. Specifications. Except for the characteristic "biodiesel content" from Table 1 of said regulation.
Blends with percentages greater than 0.05 volume fraction (5% volume) of biodiesel (B100) with diesel fuel oil must comply with the specifications established by the competent authorities of each State Party of the Central American Region.
7. CHARACTERISTICS General considerations:
For the values of the characteristics defined in Table 1, each country may establish more restrictive values in its national legislation, in accordance with its policy for reducing polluting gas emissions. In this case, the changes must be communicated to the States Parties for their knowledge and/or updating.
The differences that may exist in some of the fuel quality parameters between countries must not hinder the transport of persons, and the intraregional and international transport of goods.
The following table specifies the physicochemical characteristics required for biodiesel (B100):
Table 1 Physicochemical specifications for biodiesel (B100) (a)
| Characteristics | Units | Test Method | Values |
|---|---|---|---|
| Additives | ----- | ----- | Report (b) |
| Ester content | Mass fraction (% mass) | EN 14103 | 0.965 (96.5) min. |
| Methanol or ethanol content | Mass fraction (% mass) | EN 14110 | 0.0020 (0.20%) max. |
| API Gravity at 15.56 ºC (60 ºF) or Density at 15 ºC | ºAPI kg/m3 | ASTM D 287 ASTM D 1298 | Report |
| Oxidation stability, 110 ºC | H | EN 14112 | 6.0 min. |
| Flash point | ºC | ASTM D 93 | 101.0 min. |
| Water and sediment | Volume fraction (% volume) | ASTM D 2709 | 0.00050 (0.050) max. |
| Kinematic viscosity at 40 °C. | mm2/s | ASTM D 445 | 1.9 - 6.5 (c) |
| Sulfated ash | mg/kg | ASTM D 874 | 200 max. |
| Total sulfur content(d) | mg/kg | ASTM D 5453 | 10 max. |
| Copper strip corrosion, 3 h, 50 °C | -------- | ASTM D 130 | No. 3 max. |
| Cetane number | ------- | ASTM D 613 | 51 min. |
| Cloud point (Punto de enturbiamiento)(e) | ºC | ASTM D 2500 | Report |
| Carbon residue(f) | mg/kg | ASTM D 4530 | 500 max. |
| Acid number | mg KOH / g | ASTM D 664 | 0.50 max. |
| Free glycerin | mg/kg | ASTM D 6584 | 200 max. |
| Total glycerin | Mass fraction (% mass) | ASTM D 6584 | 0.00240 (0.240) max. |
| Phosphorus content | mg/kg | ASTM D 4951 | 4 max. |
| Distillation temperature, atmospheric equivalent temperature, 90% recovered | oC | ASTM D 1160 | 360 max. |
| Sodium (Na) and potassium (K) combined | mg/kg | EN 14538 | 5 max. |
(a) If, to meet special equipment operating conditions that require, for technical reasons, quality specifications different from those indicated in this table, the competent authority may authorize, by reasoned resolution, the modification thereof.
(b) The information to be submitted for each additive that was added to this product is the following:
- Material Safety Data Sheet.
- Added proportion of the additive (blend).
- Product property that the additive generates or improves, e.g.: antioxidant, biocide, among others; For complete information on microbial contamination, refer to ASTM Guide D 6469.
This information must be provided to the competent authority each time the additive is changed.
(c) The upper kinematic viscosity limit of 6.5 mm2/s is higher than that of petroleum-based diesel and must be considered when used for blending.
(d) B100 is essentially sulfur-free.
(e) The cloud point of biodiesel is generally higher than that of petroleum-based diesel and must be considered when used for blending.
(f) The carbon residue must be obtained from 100% of the sample.
NOTES:
1. The ASTM and EN methods indicated in the table are approved as referee methods. Other applicable methods are indicated in numeral 9.
2. For cases of "report," the result obtained according to the described method must be indicated. Each country may establish the limits for each of these parameters and apply the provisions of its national legislation.
3. Results must be reported with the number of decimal places indicated by each method and not necessarily with the number of decimal places shown in this specifications table.
Caution: The generation and dissipation of static electricity can create problems in the handling of distillate fuel oils with which biodiesel may be blended.
8. SAMPLING For sample taking, the latest current edition of the following ASTM or API standards must be used:
ASTM D 4057: Standard Practice for Manual Sampling of Petroleum and Petroleum Products.
API MPMS 8.1: Standard Practice for Manual Sampling of Petroleum and Petroleum Products.
ASTM D-5842: Standard Practice for Sampling and Handling of Fuels for Volatility Measurement.
API MPMS 8.4: Standard Practice for Sampling and Handling of Fuels for Volatility Measurement.
9. TEST METHODS For the tests, the latest current edition of the following ASTM, EN, and UOP standards in the original language must be used. The translation and use of these will be the responsibility of the user, and they will be accepted as long as they are not homologated and/or there are no Central American technical standards or regulations.
9.1. ASTM D 93: Standard Test Method for Flash Point by Pensky-Martens Closed Cup Tester.
9.2. ASTM D 130: Standard Test Method for Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test.
9.3. ASTM D 189: Standard Test Method for Conradson Carbon Residue of Petroleum Products.
9.4. ASTM D 287: Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products.
9.5. ASTM D 445: Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and the Calculation of Dynamic Viscosity).
9.6. ASTM D 524: Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products.
9.7. ASTM D 613: Standard Test Method for Cetane Number of Diesel Fuel Oil.
9.8. ASTM D 664: Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration.
9.9. ASTM D 874: Standard Test Method for Sulfated Ash from Lubricant Oils and Additives.
9.10. ASTM D 974: Standard Test Method for Acid and Base Number by Color-Indicator Titration.
9.11. ASTM D 1160: Standard Test Method for Distillation of Petroleum Products at Reduced Pressure.
9.12. ASTM D 1298: Standard Practice for Density, Relative Density (Specific Gravity) or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method.
9.13. ASTM D 1796: Standard Test Method for Water and Sediments in Fuel Oils by the Centrifuge Method (Laboratory Procedure).
9.14. ASTM D 2500: Standard Test Method for Cloud Point (Punto de Enturbiamiento) of Petroleum Products.
9.15. ASTM D 2622: Standard Test Method for Sulfur in Petroleum Products by X Ray Spectrometry.
9.16. ASTM D 2709: Standard Test Method for Water and Sediment in Middle Distillate Fuels by Centrifuge.
9.17. ASTM D 3117: Standard Test Method for Wax Appearance Point of Distillate Fuels.
9.18. ASTM D 3242: Standard Test Method for Acidity in Aviation Turbine Fuel.
9.19. ASTM D 3828: Standard Test Method for Flash Point (Punto de Inflamación) by Small Scale Closed Tester.
9.20. ASTM D 4052: Standard Test Method for Density and Relative Density of Liquids by Digital Meter.
9.21. ASTM D 4177: Standard Practice for Automatic Sampling of Petroleum and Petroleum Products.
9.22. ASTM D 4294: Standard Test Method for Sulfur in Petroleum Products by Energy Dispersive X-Ray Fluorescence Spectroscopy.
9.23. ASTM D 4530: Standard Test Method for Determination of Carbon Residue (Micro Method).
9.24. ASTM D 4951: Standard Test Method for Determination of Additive Elements in Lubricating Oils by Inductively Coupled Plasma Atomic Emission.
9.25. ASTM D 5453: Standard Test Method for Determination of Total Sulfur in Light Hydrocarbons, Motor Fuels and Oils by Ultraviolet Fluorescence.
9.26. ASTM D 5773: Standard Test Method for Cloud Point (Punto de Enturbiamiento) of Petroleum Products (Constant Cooling Rate Method).
9.27. ASTM D 6450: Standard Test Method for Flash Point (Punto de Inflamación) by Continuously Closed Cup (CCCFP) Tester.
9.28. ASTM D 6584: Standard Test Method for Determination of Total Monoglycerides, Total Diglycerides, Total Triglycerides and Free and Total Glycerin in B-100 Biodiesel Methyl Esters by Gas Chromatography.
9.29. EN 14103: Fat and oil derivatives - Fatty acid methyl esters (FAME) - Determination of ester and linolenic acid methyl ester contents.
9.30. EN 14105: Fat and oil derivatives. Fatty acid methyl esters (FAME). Determination of free and total glycerol and mono-, di- and triglyceride contents.
9.31. EN 14106: Fat and oil derivatives. Fatty acid methyl esters (FAME). Determination of free glycerol content.
9.32. EN 14107: Fat and oil derivatives. Fatty acid methyl esters (FAME). Determination of phosphorus content by inductively coupled plasma (ICP) emission spectrometry.
9.33. EN 14108: Fat and oil derivatives. Fatty acid methyl esters (FAME). Determination of sodium content by atomic absorption spectrometry.
9.34. EN 14109: Fat and oil derivatives. Fatty acid methyl esters (FAME). Determination of potassium content by atomic absorption spectrometry.
9.35. EN 14110: Fat and oil derivatives - Fatty acid methyl esters (FAME) - Determination of methanol content.
9.36. EN 14112: Fat and oil derivatives - Fatty acid methyl esters (FAME) - Determination of oxidation stability (accelerated oxidation test).
9.37. EN 14538: Fat and oil derivatives - Fatty acid methyl esters (FAME) - Determination of Ca, K, Mg and Na content by optical emission spectral analysis with inductively coupled plasma (ICP OES).
9.38. EN 15751: Automotive fuels. Fatty acid methyl esters (FAME) and blends with diesel. Determination of oxidation stability by the accelerated oxidation method.
9.39. EN 16294: Petroleum products and fat and oil derivatives. Determination of phosphorus content in fatty acid methyl esters (FAME). Optical emission spectrometric analysis by inductively coupled plasma (ICP OES).
9.40. UOP 389: Trace Metals in Oils by Wet Ashing and ICP-OES.
9.41. UOP 391: Trace Metals in Petroleum Products or Organics by AAS (Atomic Absorption Spectrophotometry).
10. SURVEILLANCE AND VERIFICATION The surveillance and verification of this Central American technical regulation corresponds to the competent authorities of each of the States Parties.
11. BIBLIOGRAPHY For the preparation of this regulation, the following ASTM standard was consulted:
ASTM D 6469-04: Guide for Microbial Contamination in Fuels and Fuel Systems.
-END OF CENTRAL AMERICAN TECHNICAL REGULATION