ASTM D5798-21
Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines

Standard No.

ASTM D5798-21

Release Date

2021

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D5798-21

Scope

1.1 This specification covers the requirements for automotive fuel blends of ethanol and gasoline for use in ground vehicles equipped with ethanol fuel blend flexible-fuel sparkignition engines. Fuel produced to this specification contains 51 % to 83 % by volume ethanol. This fuel is for use in flexible-fuel vehicles and is sometimes referred to at retail as “Ethanol Flex-Fuel.” Appendix X1 discusses the significance of the properties specified. 1.2 The vapor pressure of ethanol fuel blends is varied for seasonal climatic changes. Vapor pressure is increased at lower temperatures to ensure adequate flexible-fuel vehicle operability. Ethanol content and selection of hydrocarbon blendstock are adjusted by the blender to meet these vapor pressure requirements. 1.3 This specification formerly covered Fuel Ethanol (Ed70Ed85) for Automotive Spark-Ignition Engines, also known commercially as E85. The nomenclature “fuel ethanol” has been changed to “ethanol fuel blends” to distinguish this product from denatured fuel ethanol Specification D4806. To facilitate blending of ethanol fuel blends that meet seasonal vapor pressure requirements, a new lower minimum ethanol content has been established. 1.4 The United States government has established various programs for alternative fuels. Many of the definitions of alternative fuel used by these programs may be more restrictive than the requirements of this specification. See 4.1.2.1 for additional information on alternative fuels containing ethanol. 1.5 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.6 The following safety hazard caveat pertains only to the test method portion, 8.1.8, 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. 1.7 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 D5798-21 Referenced Document

• 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 D1688 Standard Test Methods for Copper in Water
• 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 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 D5501 Standard Test Method for Determination of Ethanol Content of Denatured Fuel Ethanol by Gas Chromatography
• ASTM D5854 Standard Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products
• ASTM D6423 Standard Test Method for Determination of pHe of Ethanol, Denatured Fuel Ethanol, and Fuel Ethanol (Ed75-Ed85)
• ASTM D7039 Standard Test Method for Sulfur in Gasoline, Diesel Fuel, Jet Fuel, Kerosine, Biodiesel, Biodiesel Blends, and Gasoline-Ethanol Blends by Monochromatic Wavelength Dispersive X-ray Fluorescence Spectro
• ASTM D7319 Standard Test Method for Determination of Existent and Potential Sulfate and Inorganic Chloride in Fuel Ethanol and Butanol by Direct Injection Suppressed Ion Chromatography*， 2022-10-01 Update
• 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 D7795 Standard Test Method for Acidity in Ethanol and Ethanol Blends by Titration*， 2022-04-01 Update
• 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 E1064 Standard Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration*， 2024-01-01 Update
• ASTM E203 Standard Test Method for Water Using Volumetric Karl Fischer Titration

ASTM D5798-21 history

• 2021 ASTM D5798-21 Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2020 ASTM D5798-20 Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2019 ASTM D5798-19b Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2019 ASTM D5798-19a Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2019 ASTM D5798-19 Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2018 ASTM D5798-18a Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2018 ASTM D5798-18 Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2017 ASTM D5798-17 Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2015 ASTM D5798-15 Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2014 ASTM D5798-14 Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2013 ASTM D5798-13a Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2013 ASTM D5798-13 Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2012 ASTM D5798-12 Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2011 ASTM D5798-11 Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines
• 2010 ASTM D5798-10a Standard Specification for Fuel Ethanol (Ed70-Ed85) for Automotive Spark-Ignition Engines
• 2010 ASTM D5798-10 Standard Specification for Fuel Ethanol (Ed70-Ed85) for Automotive Spark-Ignition Engines
• 2009 ASTM D5798-09a Standard Specification for Fuel Ethanol (Ed75-Ed85) for Automotive Spark-Ignition Engines
• 2009 ASTM D5798-09B Standard Specification for Fuel Ethanol (Ed75-Ed85) for Automotive Spark-Ignition Engines
• 2009 ASTM D5798-09 Standard Specification for Fuel Ethanol (Ed75-Ed85) for Automotive Spark-Ignition Engines
• 2007 ASTM D5798-07 Standard Specification for Fuel Ethanol (Ed75-Ed85) for Automotive Spark-Ignition Engines
• 2006 ASTM D5798-06 Standard Specification for Fuel Ethanol (Ed75-Ed85) for Automotive Spark-Ignition Engines
• 1999 ASTM D5798-99(2004) Standard Specification for Fuel Ethanol (Ed75-Ed85) for Automotive Spark-Ignition Engines
• 1999 ASTM D5798-99 Standard Specification for Fuel Ethanol (Ed75-Ed85) for Automotive Spark-Ignition Engines