article thumbnail

Study of Vapor Pressures of Gasoline-Alcohol Blends Finds That Dual-Alcohol Blends Can Result in RVPs Identical to That of Gasoline

Green Car Congress

RVPs (predicted DVPE) of single- and dual-alcohol blends in gasoline with different relative proportions of ethanol and 1-butanol. Credit: ACS, Andersen et al. Click to enlarge. While the vapor pressure is independent of the vapor/ liquid ratio for a pure compound, this is not true for mixtures, such as gasoline.

article thumbnail

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) High heat of vaporization values are typical for water and alcohols including hydrous ethanol and hydrous ethanol blends (oxygenated hydrocarbons). As used in this section and Sec. 40 CFR ยง 80.27(d) Brewster, S.C.,