ASTM D5798 - 14

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

    Active Standard ASTM D5798 | Developed by Subcommittee: D02.A0.02

    Book of Standards Volume: 05.02


      Format Pages Price  
    PDF 10 $43.00   ADD TO CART
    Hardcopy (shipping and handling) 10 $43.00   ADD TO CART
    Standard + Redline PDF Bundle 20 $51.60   ADD TO CART


    Abstract

    This specification covers a fuel blend, nominally 75 to 85 volume % denatured fuel ethanol (Ed75-Ed85) and 25 to 15 additional volume % hydrocarbons for use in ground vehicles with automotive spark-ignition engines. Fuel ethanol (Ed75-Ed85) shall conform to the performance requirements prescribed. Fuel ethanol (Ed75-Ed85) shall be visually free of sediment and suspended matter. The hydrocarbon/aliphatic ether blend content, vapour pressure, acidity, pH requirements, gum content, inorganic chloride, water requirements, copper requirements, and sulphur requirements shall be tested to meet the requirements prescribed.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. 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 spark-ignition engines. Fuel produced to this specification contains 51 to 83 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 (Ed70-Ed85) 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 the standard. The values given in parentheses are for information only.

    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 and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D86 Test Method for Distillation of Petroleum Products at Atmospheric Pressure

    D130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test

    D381 Test Method for Gum Content in Fuels by Jet Evaporation

    D525 Test Method for Oxidation Stability of Gasoline (Induction Period Method)

    D1613 Test Method for Acidity in Volatile Solvents and Chemical Intermediates Used in Paint, Varnish, Lacquer, and Related Products

    D1688 Test Methods for Copper in Water

    D3231 Test Method for Phosphorus in Gasoline

    D4057 Practice for Manual Sampling of Petroleum and Petroleum Products

    D4175 Terminology Relating to Petroleum, Petroleum Products, and Lubricants

    D4177 Practice for Automatic Sampling of Petroleum and Petroleum Products

    D4306 Practice for Aviation Fuel Sample Containers for Tests Affected by Trace Contamination

    D4806 Specification for Denatured Fuel Ethanol for Blending with Gasolines for Use as Automotive Spark-Ignition Engine Fuel

    D4814 Specification for Automotive Spark-Ignition Engine Fuel

    D4953 Test Method for Vapor Pressure of Gasoline and Gasoline-Oxygenate Blends (Dry Method)

    D5190 Test Method for Vapor Pressure of Petroleum Products (Automatic Method)

    D5191 Test Method for Vapor Pressure of Petroleum Products (Mini Method)

    D5453 Test Method for Determination of Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel, and Engine Oil by Ultraviolet Fluorescence

    D5501 Test Method for Determination of Ethanol and Methanol Content in Fuels Containing Greater than 20% Ethanol by Gas Chromatography

    D5854 Practice for Mixing and Handling of Liquid Samples of Petroleum and Petroleum Products

    D6423 Test Method for Determination of pHe of Ethanol, Denatured Fuel Ethanol, and Fuel Ethanol (Ed75-Ed85)

    D7319 Test Method for Determination of Existent and Potential Sulfate and Inorganic Chloride in Fuel Ethanol by Direct Injection Suppressed Ion Chromatography

    D7328 Test Method for Determination of Existent and Potential Inorganic Sulfate and Total Inorganic Chloride in Fuel Ethanol by Ion Chromatography Using Aqueous Sample Injection

    D7667 Test Method for Determination of Corrosiveness to Silver by Automotive Spark-Ignition Engine Fuel--Thin Silver Strip Method

    D7671 Test Method for Corrosiveness to Silver by Automotive Spark-Ignition Engine Fuel-Silver Strip Method

    D7757 Test Method for Silicon in Gasoline and Related Products by Monochromatic Wavelength Dispersive X-ray Fluorescence Spectrometry

    D7795 Test Method for Acidity in Ethanol and Ethanol Blends by Titration

    E203 Test Method for Water Using Volumetric Karl Fischer Titration

    E1064 Test Method for Water in Organic Liquids by Coulometric Karl Fischer Titration

    Government Standards

    UnitedStatesCodeofFe Title 40, Part 80

    SAE Papers

    SAE2007–01&nda A Model for Estimating Vapor Pressures of Commingled Ethanol Fuels


    ICS Code

    ICS Number Code 75.160.20 (Liquid fuels)

    UNSPSC Code

    UNSPSC Code 15101506(Gasoline or Petrol)


    Referencing This Standard

    DOI: 10.1520/D5798-14

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM D5798-14, Standard Specification for Ethanol Fuel Blends for Flexible-Fuel Automotive Spark-Ignition Engines, ASTM International, West Conshohocken, PA, 2014, www.astm.org

    Back to Top