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Physical & Chemical properties

Partition coefficient

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Description of key information

The partition coefficient of DIPE ranged from log Kow = 1.52 (25 °C, pH not reported) to 2.4 (pH 6.7, temperature not reported) obtained from a TGD-approved handbook and a key study, respectively.

Key value for chemical safety assessment

Log Kow (Log Pow):
at the temperature of:
20 °C

Additional information

The partition coefficient (log Kow) of DIPE was measured in a key study of Klimisch-2 reliability by Eadsforth (1983), using the high performance liquid chromatography (HPLC) method. The study, conducted in compliance with the OECD Guidelines for the Testing of Chemicals No. 117, reports a log Kow value of 2.4 for DIPE at pH 6.7. No information on temperature was reported. The authors also calculated the log Kow value to be 1.6 from the chemical structure using the fragment-addition method of Hansch and Leo (1979).

Also, a partition coefficient for DIPE of log Kow = 1.52 at 25 °C was sourced from the CRC Handbook of Chemistry and Physics (81st Ed.), known to contain peer-reviewed data of Klimisch-2 reliability. No information on the pH of the solution was reported. All three values agree that DIPE possesses a low log Kow (<3).