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Determination of Octanol–Water Partition Coefficients, Water Solubility and Vapour Pressures of Alkyl-lead Compounds

✍ Scribed by Yun Wang; Andrew G. Allen; Roy M. Harrison

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
442 KB
Volume
10
Category
Article
ISSN
0268-2605

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✦ Synopsis

Physico

-chemical properties of alkyl-lead compounds, namely aqueous solubility, octanol-water partition coefficient (KaW), vapour pressure and Henry's Law constant, have been determined. Vapour pressures of trialkyl-lead salts at different temperatures were measured by a gas-saturation technique in which air was passed slowly through a glass column packed with pure solid alkyl-lead compounds. KO, of tetra-alkyl-lead (TAL) and trialkyl-lead (TriAL) were determined under different salinity and pH conditions, and the latter were related to the species (R3Pb+, RpbOH' or R3PbCIo) dominating under a particular set of conditions. Regression calculations incorporating melting point corrections relate water solubility to KO, and provide a means of estimating either parameter for a wider range of compounds.

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