1.1 This specification covers the requirements for automotive fuel blends of methanol and gasoline for use in ground vehicles equipped with methanol-capable flexible-fuel, and dedicated methanol spark-ignition engines. Fuel produced to this specification contains 51 % to 85 % by volume methanol. This fuel is sometimes referred to at retail as “M85.” Appendix X1 discusses the significance of the properties specified. Appendix X2 presents the current status in the development of a luminosity test procedure (flame visibility) for methanol fuel blends (M51–M85).
1.2 The vapor pressure of methanol fuel blends is varied for seasonal climatic changes. Vapor pressure is increased at lower temperatures to ensure adequate vehicle operability and safety. Methanol content and selection of gasoline blendstocks are adjusted by the blender to meet these vapor pressure requirements.
1.3 The United States government has established various programs for alternative fuels. Many of the definitions of alternative fuel used by these programs can be more or less restrictive than the requirements of this specification. See Annex A1 for additional information on alternative fuels containing methanol.
1.4 The values stated in SI units are to be regarded as the standard.
1.4.1 Exception—Non-SI units are provided for information only. In most cases, U.S. federal regulations specify non-SI units.
1.5 The following precautionary caveat pertains only to the test method portions–Appendix X2 of this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D5797-21 Referenced Document
ASTM D1193 Standard Specification for Reagent Water
ASTM D1266 Standard Test Method for Sulfur in Petroleum Products (Lamp Method)
ASTM D130 Standard Test Method for Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test
ASTM D1613 Standard Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related Products
ASTM D3231 Standard Test Method for Phosphorus in Gasoline
ASTM D381 Standard Test Method for Existent Gum in Fuels by Jet Evaporation
ASTM D4057 Standard Practice for Manual Sampling of Petroleum and Petroleum Products
ASTM D4175 Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants*, 2023-07-01 Update
ASTM D4177 Standard Practice for Automatic Sampling of Petroleum and Petroleum Products
ASTM D4306 Standard Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination
ASTM D4806 Standard Specification for Denatured Fuel Ethanol for Blending with Gasolines for Use as Automotive Spark-Ignition Engine Fuel
ASTM D4814 Standard Specification for Automotive Spark-Ignition Engine Fuel
ASTM D4953 Standard Test Method for Vapor Pressure of Gasoline and Gasoline-Oxygenate Blends (Dry Method)
ASTM D5059 Standard Test Methods for Lead in Gasoline by X-Ray Spectroscopy
ASTM D5191 Standard Test Method for Vapor Pressure of Petroleum Products (Mini Method)
ASTM D525 Standard Test Method for Oxidation Stability of Gasoline (Induction Period Method)
ASTM D5453 Standard Test Method for Determination of Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel, and Engine Oil by Ultraviolet Fluorescence
ASTM D5798 Standard Specification for Fuel Ethanol (Ed75-Ed85) for Automotive Spark-Ignition Engines
ASTM D5854 Standard Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products
ASTM D7328 Standard Test Method for Determination of Existent and Potential Inorganic Sulfate and Total Inorganic Chloride in Fuel Ethanol by Ion Chromatography Using Aqueous Sample Injection*, 2023-03-01 Update
ASTM D7667 Standard Test Method for Determination of Corrosiveness to Silver by Automotive Spark-Ignition Engine Fuel—Thin Silver Strip Method*, 2021-11-01 Update
ASTM D7671 Standard Test Method for Corrosiveness to Silver by Automotive Spark–Ignition Engine Fuel–Silver Strip Method*, 2021-11-01 Update
ASTM D7757 Standard Test Method for Silicon in Gasoline and Related Products by Monochromatic Wavelength Dispersive X-ray Fluorescence Spectrometry*, 2022-11-01 Update
ASTM D7920 Standard Test Method for Determination of Fuel Methanol (M99) and Methanol Fuel Blends (M10 to M99) by Gas Chromatography
ASTM D7923 Standard Test Method for Water in Ethanol and Hydrocarbon Blends by Karl Fischer Titration
ASTM D86 Standard Test Method for Distillation of Petroleum Products
ASTM E203 Standard Test Method for Water Using Volumetric Karl Fischer Titration
ASTM D5797-21 history
2021ASTM D5797-21 Standard Specification for Methanol Fuel Blends (M51–M85) for Methanol-Capable Automotive Spark-Ignition Engines
2018ASTM D5797-18 Standard Specification for Methanol Fuel Blends (M51–M85) for Methanol-Capable Automotive Spark-Ignition Engines
2017ASTM D5797-17 Standard Specification for Methanol Fuel Blends (M51&x2013;M85) for Methanol-Capable Automotive Spark-Ignition Engines
2016ASTM D5797-16 Standard Specification for Methanol Fuel Blends (M51&x2013;M85) for Methanol-Capable Automotive Spark-Ignition Engines
2015ASTM D5797-15 Standard Specification for Fuel Methanol (M70-M85) for Automotive Spark-Ignition Engines
2013ASTM D5797-13 Standard Specification for Fuel Methanol (M70-M85) for Automotive Spark-Ignition Engines
2007ASTM D5797-07 Standard Specification for Fuel Methanol (M70-M85) for Automotive Spark-Ignition Engines
2006ASTM D5797-06 Standard Specification for Fuel Methanol (M70-M85) for Automotive Spark-Ignition Engines
1996ASTM D5797-96(2001) Standard Specification for Fuel Methanol (M70-M85) for Automotive Spark-Ignition Engines
1996ASTM D5797-96 Standard Specification for Fuel Methanol (M70-M85) for Automotive Spark-Ignition Engines