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Author Bahadur, N. P. ♦ Boocock, D. G. B. ♦ Mackay, D.
Sponsorship Natural Sciences and Engineering Research Council of Canada, Ottawa, ON (Canada)
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword ENVIRONMENTAL SCIENCES ♦ CHLORINATED AROMATIC HYDROCARBONS ♦ ENVIRONMENTAL TRANSPORT ♦ OCTANOLS ♦ TEMPERATURE DEPENDENCE ♦ PARTITION ♦ MATHEMATICAL MODELS ♦ AQUATIC ECOSYSTEMS ♦ TERRESTRIAL ECOSYSTEMS
Abstract The current emphasis on assessing the environmental impact of both industrial and agricultural chemicals has resulted in an increased reliance on the physical and chemical properties of these compounds to predict their environmental behavior. The octanol-water partition coefficients of seven chlorobenzenes (1,2-dichlorobenzene, 1,4-dichlorobenzene, 1,3,5-trichlorobenzene, 1,2,3,4-tetrachlorobenzene, 1,2,3,5-tetrachlorobenzene, pentachlorobenzene, and hexachlorobenzene) were measured by a conventional shake-flask, batch-contacting method over the temperature range (5 to 45) C. The measurements at 25 C in this study agree well with literature data obtained with comparable methods. The van`t Hoff plots of log K{sub OW} versus T{sup {minus}1} exhibit linearity with values of K{sub OW} increasing by 10%--14% over this temperature range. The enthalpy of phase change ranges from (17 to 24) kJ/mol. These temperature relationships can be incorporated into environmental models which predict the fate of chemicals in aquatic and terrestrial systems over a range of environmental temperatures.
ISSN 00219568
Educational Use Research
Learning Resource Type Article
Publisher Date 1997-07-01
Publisher Place United States
Journal Journal of Chemical and Engineering Data
Volume Number 42
Issue Number 4


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