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Physical & Chemical properties

Water solubility

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Description of key information

The solubilities of butenes in water were reported to range from 222 to 263 mg/L. This data was reported for the members of the of butenes category; but-1-ene (CAS no 106-98-9) and 2-methylbutene (CAS no 115-11-7). 

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Additional information

The study by McAuliffe (1966) predates the implementation of GLP and standard guidelines. However, the method is described in detail and is considered appropriate for determining the solubility of a gaseous substance. The study is therefore deemed suitable as the key study for this endpoint. The solubility of butenes therefore is considered to range from 222 to 263 mg/l at 25˚C. It should be noted that the solubility was measured in a closed system with an equilibrium between the vapour and water phase. This is an artificial situation, and in the environment the observed solubility would be expected to be much less.

The solubility of 2-methylpropene is 263 mg/l (McAuliff, 1966). The water solubility of But-1-ene is 222±10 m g/l at 25˚C (McAuliff, 1966). The water solubility of But-1-ene is 222±10 m g/l at 25˚C (McAuliff, 1966).