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Determination of environmentally relevant physical‐chemical properties of some fatty acid esters
Author(s) -
Krop Hildo B.,
Velzen Martin J. M. v.,
Parsons John R.,
Govers Harrie A. J.
Publication year - 1997
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-997-0142-9
Subject(s) - vaporization , boiling point , chemistry , vapor pressure , boiling , carbon number , gas chromatography , enthalpy of vaporization , thermodynamics , atmospheric temperature range , chromatography , organic chemistry , enthalpy , alkyl , physics
Fat models frequently use input parameters that are defined at environmental conditions. In a recently developed gas‐liquid chromatography method (GC‐VAP), vapor pressures, heats of vaporization, and heat capacity differences (gas‐liquid) of fatty acid esters are determined over a large temperature range that includes environmental temperatures. This method also allows an accurate determination of the normal boiling point temperature of a substance. Literature values of vapor pressure, boiling point temperature, and heat of vaporization at 298.15 K for the chosen esters are all in excellent agreement with those determined with the developed method. Correlations between carbon number and heat of vaporization are high.