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Author
Finnegan, D. M.
Title
Study of Flash Point of Multicomponent Flammable Liquid Solutions.
Coporate
Worcester Polytechnic Inst., MA
Report
Thesis, December 1994, 158 p.
Keywords
flash point | flammable liquids | combustible liquids | contamination | experiments | spectroscopy | chromatography
Abstract
This study quantifies the reduction in flash point of a non-volatile combustible liquid due to contamination with a more volatile liquid. Experimental tests show that very small concentrations on n-Heptane significantly reduce the flash points of Asphalt, No. 6 Fuel Oil, Motor Oil, and Transformer Oil. For example, a 1% by volume addition of n-Heptane lowered the closed cup flash point of No. 6 Fuel Oil from 95 degree C to ~65 deg C. Flash point tests were also conducted using mixtures of Methyl Styrene(a)/n-Heptane andEthylene Glycol/Methanol in order to examine the applicability of ideal solution flash point theory based on component partial pressures. Theoretical calculations of flash points for these mixtures were within 7% of the measured values. These small differences are probably due to deviations of solutions from Raoult's Law.