AQUEOUS SOLUBILITIES, VAPOR-PRESSURES, AND 1-OCTANOL-WATER PARTITION-COEFFICIENTS FOR C9-C-14 LINEAR ALKYLBENZENES

Measurements and estimates of aqueous solubilities, 1-octanol-water partition coefficients (K(ow)), and vapor pressures were made for 29 linear alkylbenzenes having alkyl chain lengths of 9-14 carbons. The ranges of values observed were vapor pressures from 0.002 to 0.418 Pa, log K(ow) from 6.83 to 9.95, and aqueous solubilities from 4 to 38 nmol.L-1. Measured values exhibited a relationship to both the alkyl chain length and the position of phenyl substitution on the alkyl chain. Measurement of the aqueous concentrations resulting from equilibration of a mixture of alkylbenzenes yielded higher than expected values, indicating cosolute or other interactive effects caused enhanced aqueous concentrations of these compounds.