Vapour pressures, aqueous solubilities, Henryʹs law constants, partition coefficients between gas/water (Kgw), N-octanol/water (Kow) and gas/N-octanol (Kgo) of 106 polychlorinated diphenyl ethers (PCDE)

Modelling the environmental fate of persistent organic pollutants like polychlorinated diphenyl ethers (PCDE) requires the knowledge of a number of fundamental physico-chemical properties of these compounds. We report here the physico-chemical properties of 106 PCDEs, which are over 50% of all possible congeners. Vapour pressures POL, water solubilities SH2O and n-octanol/water partition coefficients Kow were determined with chromatographic methods. With these experimental data the Henryʹs law constants H, gas/water KGw and gas/n-octanol KGO partition coefficients were calculated. Vapour pressures and water solubilities and n-octanol/water partition coefficients of the PCDEs are close to those of similar groups of organochlorine compounds like polychlorinated biphenyls (PCBs) and dibenzofurans (PCDFs). A similar environmental fate can be predicted and was partially already been observed