ASTM publishes butanol standard
November 12, 2013
BY Staff
ASTM International has published a new standard for butanol. The standard is intended for gasoline fuel blends containing 1 to 12.5 percent butanol that are used as an automotive spark-ignition fuel.
The new standard, ASTM D7862, includes performance requirements as well as test methods for determining butanol content, water content, acidity, inorganic chloride, solvent-washed gum, sulfur content and total sulfate. The new specification covers three butanol isomers: 1-butanol, 2-methyl-1-propanol, and 2-butanol. The standard excludes 2-methyl-2-propanol, or tert-butyl alcohol, which has different physical properties. The isomer 1-butanol, commonly known as N-butanol, is being developed commercially by Cobalt Technologies Inc. The isomer 2-methyl-1-propanol, commonly known as isobutanol, is being developed by Gevo Inc. and Butamax Advanced Biofuels LLC.
The new specification will be used by biofuel producers, petroleum refiners, gasoline blenders, government agencies, inspection laboratories, and manufacturers of motor vehicles, marine engines and outdoor power equipment.
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