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Perspective: US Needs to Transition to Hydrous Ethanol as the Primary Renewable Transportation Fuel

Green Car Congress

d) further provides for alcohol blends as follows: Special provisions for alcohol blends. (1) For hydrous ethanol blends, this is accomplished primarily through the total heat of vaporization resulting from combining ethanol and water. As used in this section and Sec. 80.28, “applicable standard” means: 9.0