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Physical & Chemical properties

Partition coefficient

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Description of key information

Log Kow: 6.33 (2,4,6,8,10-pentamethylcyclopentasiloxane)
Partition coefficient = -2.4 (methylsilanetriol)

Key value for chemical safety assessment

Log Kow (Log Pow):
6.33
at the temperature of:
20 °C

Additional information

A reliable partition coefficient value of 6.33 has been determined in a study report which uses a HPLC method similar to the OECD Guidline 117. The experiment does not measure the octanol water partition coefficient directly instead it estimates the values using the HPLC retention correlation method.

The partition coefficient of the likely hydrolysis product methylsilanetriol has been calculated using a validated QSAR.