The Vapor Pressure of Binary Solutions of Isopropyl Alcohol and Benzene at 25°C

1937 ◽  
Vol 41 (3) ◽  
pp. 457-462 ◽  
Author(s):  
Allen L. Olsen ◽  
E. Roger. Washburn
Keyword(s):  
Vapor Pressure ◽  
Isopropyl Alcohol ◽  
Binary Solutions

The effects of addition of co-solvents on the physicochemical properties of gasoline–methanol blended fuels

2018 ◽  
Vol 20 (5) ◽  
pp. 501-509 ◽  
Author(s):  
Isaac Schifter ◽  
Luis Diaz ◽  
Uriel Gonzalez ◽  
Carmen Gonzalez-Macias ◽  
Isidro Mejía-Centeno
Keyword(s):  
Vapor Pressure ◽  
Physicochemical Properties ◽  
Ternary Mixture ◽  
Isopropyl Alcohol ◽  
Pressure Increase ◽  
Methyl Tertiary Butyl Ether ◽  
Butyl Ether ◽  
Tertiary Butyl ◽  
Reid Vapor Pressure ◽  
Blended Fuels

The scope of the work carried out is aimed to evaluate the effects of blending methanol in the gasoline pool, particularly octane number and Reid vapor pressure increase when methanol is substituting methyl-tertiary-butyl ether in the formulation of Regular and Premium base gasolines. Isopropyl alcohol and ethanol have been investigated and found to be a promising co-blending alcohol to be mixed in gasoline methanol blends. Isopropyl alcohol is most effective below 3 vol%. Ethanol has been found to be the most promising co-blending alcohol able to reduce the Reid vapor pressure increase by 1.4 psi even with concentrations in the range of 2 vol%. The addition of isopropyl alcohol to the methanol–gasoline blends has shown the ability of a ternary mixture to further reduce the Reid vapor pressure of the finished gasoline and, subject to availability and price of isopropyl alcohol, could be of interest in further formulation studies focused on maximizing the saving on finished gasoline cost by reducing the Reid vapor pressure of base gasoline and/or increasing the methanol content.

Benzylamine Tartrate as an Organic Glass Substrate for Carbon Films by Evaporation

1970 ◽  
Vol 28 ◽  
pp. 484-485
Author(s):  
A. C. Faberge
Keyword(s):  
Vapor Pressure ◽  
Viscous Liquid ◽  
Glass Substrate ◽  
Room Temperature ◽  
Carbon Film ◽  
Carbon Films ◽  
Organic Glass ◽  
Spectroscopic Examination ◽  
Polymeric Substrates

Benzylamine tartrate (m.p. 63°C) seems to be a better and more convenient substrate for making carbon films than any of those previously proposed. Using it in the manner described, it is easy consistently to make batches of specimen grids as open as 200 mesh with no broken squares, and without individual handling of the grids. Benzylamine tartrate (hereafter called B.T.) is a viscous liquid when molten, which sets to a glass. Unlike polymeric substrates it does not swell before dissolving; such swelling of the substrate seems to be a principal cause of breakage of carbon film. Mass spectroscopic examination indicates a vapor pressure less than 10−9 Torr at room temperature.

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