R5 AM Perflourochemical Biodegradation, Fate, and Transport
Thursday, 17 November 2005: 8:00 AM - 11:40 AM in 321-323

(KAI-1117-833170) Physicochemical properties of fluorinated compounds: the impact of the F-C bond compared to the H-C bond.

Kaiser, M¹, Botelho, M¹, Cobranchi, D¹, Kao, C-P², Krusic, P¹, Larsen, B¹, Marchione, A¹, Wooler, G¹, Buxton, L³, Buck, R⁴, ¹ DuPont CCAS, Wilmington, DE, USA² DuPont ER&T, Wilmingtron, DE, USA³ DuPont FLPR, Wilmington, DE, USA⁴ DuPont DCSE, Wilmington, DE, USA

ABSTRACT- Measured physicochemical properties are important in the understanding of both environmental transport and exposure. Comparing both measured and literature values, we find significant disagreements for the same compounds. We have measured the solubility and vapor pressure of a variety of fluorinated compounds and also observed their sublimation behavior. We also observed significant differences in the data obtained, depending upon the principles used in the measurements. In this paper we shall report these data along with an explanation for the discrepancies. We shall also suggest some calculations that should be considered for vapor pressure to understand if the measured data are aligned with expectations for homologous series.

Key words: properties, fluorinated, sublimation