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Evaluation and Prediction of Henry's Law Constants and Aqueous Solubilities for Solvents and Hydrocarbon Fuel Components. Volume 1. Technical Discussion
Final rept. Feb 1985-Sep 1986
RESEARCH TRIANGLE INST (RTI) INST RESEARCH TRIANGLE PARK NC
Pagination or Media Count:
Laboratory measurements of Henrys law constants are reported for 51 chemicals, spanning a wide range of chemical structures and volatilities. A static headspace method Equilibrium Partitioning in Closed Systems, referred to as EPICS was used to measure Henrys Law Constant, with the standard batch air- stripping method used as a check. An average precision of 5 percent was obtained for the EPICS runs, and the Henrys law constants agreed reasonably wellwithin 10 percent with the batch air-stripping results and other reported experimental values. Measurements were conducted over a temperature range of 10-30 C, and the data were correlated with a temperature regression equation coupled with a temperature-dependent error term based on 95 percent confidence limits. The aqueous solubilities of the study compounds were also determined via the shake- flask method at temperatures of 10,20, and 30 degrees Celsius. Keywords Volatile organics, Solvents, Fuels, Henrys law constants, Aqueous solubilities, Air water distribution.
APPROVED FOR PUBLIC RELEASE