ASTM D7862 REV A Standard Specification for Butanol for Blending with Gasoline for Use as Automotive Spark-Ignition Engine Fuel
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ASTM International
Standard Specification for Butanol for Blending with Gasoline for Use as Automotive Spark-Ignition Engine Fuel
N D7862 REV A
Annotation
This specification covers butanol intended to be blended with gasoline at 1 % to 12.5 % by volume for use as an automotive spark-ignition engine fuel.
Butanol contains 22 % by mass oxygen. The mass percent of oxygen of a butanol blend with gasoline depends on the volume percent of butanol blended, the density of the butanol isomer, and the density of the base blendstock
The maximum limit on blending is not a performance limit but a current regulatory limit in the United States.
This specification covers three butanol isomers:1- butanol, 2-butanol, and 2-methyl-1-propanol. This specification specifically excludes 2-methyl-2-propanol (that is, tert-butyl alcohol).
Tert-butyl alcohol has different physical properties (melting point, water miscibility) than the other three isomers.
The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
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.
*A Summary of Changes section appears at the end of this standard
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