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Vapor pressure of solid polybrominated diphenyl ethers determined via Knudsen effusion method
Author(s) -
Fu Jinxia,
Suuberg Eric M.
Publication year - 2011
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1002/etc.621
Subject(s) - knudsen number , sublimation (psychology) , vapor pressure , polybrominated diphenyl ethers , chemistry , differential scanning calorimetry , enthalpy of fusion , enthalpy , vaporization , environmental chemistry , enthalpy of sublimation , melting point , analytical chemistry (journal) , organic chemistry , thermodynamics , pollutant , psychology , physics , psychotherapist
Polybrominated diphenyl ethers (PBDEs) are flame retardants used in a variety of consumer products. The solid vapor pressures of BDE 15 and BDE 209 were determined by using the Knudsen effusion method, and the values measured extrapolated to 298.15 K are 3.12 × 10 −3 and 9.02 × 10 −13 Pa, respectively. The enthalpies of sublimation for these compounds have also been estimated by using the Clausius‐Clapeyron equation and are 102.0 ± 3.5 and 157.1 ± 3.5 kJ/mol, respectively. In addition, the melting points and enthalpies of fusion were measured by differential scanning calorimetry. Environ. Toxicol. Chem. 2011;30:2216–2219. © 2011 SETAC