Vapor pressure of solid polybrominated diphenyl ethers determined via Knudsen effusion method

✍ Scribed by Jinxia Fu; Eric M. Suuberg

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 106 KB
• Volume: 30
• Category: Article
• ISSN: 0730-7268
• DOI: 10.1002/etc.621

✦ Synopsis

Abstract

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