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Physical & Chemical properties

Partition coefficient

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Description of key information

Log Kow [2-(perfluorohexyl)ethyl]triethoxysilane]: 7.2 at 20°C (QSAR)

Log Kow [2-(perfluorohexyl)ethyl]silanetriol]: 2.7 at 20°C (QSAR)

Log Kow [ethanol] = -0.3

Key value for chemical safety assessment

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

Additional information

A predicted log Kow value of 7.2 at 20°C was determined for the submission substance using a validated QSAR estimation method. The result is considered to be reliable and used for assessment purposes.

In dilute conditions in water, the substance hydrolyses moderately to form [2-(perfluorohexyl)ethyl]silanetriol and ethanol. The silanol hydrolysis product, [2-(perfluorohexyl)ethyl]silanetriol has a predicted log Kow of 2.7 at 20°C using a validated QSAR method.

Ethanol has a reported log Kow of -0.3 (Hansch 1995).


Hansch. C., A. Leo and D. Hoekman (1995). Exploring QSAR. Hydrophobic, Electronic, and Steric Constants. ACS Professional Reference Book.,: American Chemical Society.