Determination and prediction of Kow and dimensionless Henry's constant ( H) for 6 ether compounds at several temperatures

Abstract

The octanol–water partition coefficient ( K ow ) and air–water partition coefficient ( K aw ) as well as the dimensionless Henry's constant ( H) are used to calculate the transport and fate of chemicals in the environment or eco-system. In this work, the K ow and the H were measured for 6 ether compounds; di-n-butyl ether (DBE), di-isopropyl ether (DIPE), tert-butyl ethyl ether (ETBE), tert-butyl methyl ether (MTBE), propyl vinyl ether (PVE) and tert-amyl methyl ether (TAME) at 4 different temperatures. The K ow was directly measured by using a conventional slow stirring (SS) method, while the H was measured using headspace gas chromatography (HSGC). Additionally, the measured K ow and H values were compared with the predicted values by the fragment constant method or HENRYWIN program approaches.