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Physical & Chemical properties

Partition coefficient

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Description of key information

Log Kow [2-(perfluorohexyl)ethyl]trimethoxysilane]: 5.8 at 20°C (QSAR)
Log Kow [2-(perfluorohexyl)ethyl]silanetriol]: 2.7 at 20°C (QSAR)
Log Kow (methanol) = -0.82 to -0.64

Key value for chemical safety assessment

Log Kow (Log Pow):
5.8
at the temperature of:
20 °C

Additional information

The requirement to test the submission substance for n-octanol/water partition coefficient is waived because under dilute conditions in water the substance hydrolyses rapidly to form [2-(perfluorohexyl)ethyl]silanetriol and methanol. The log Kow of the submission substance and its silanol hydrolysis product have been calculated using a validated QSAR.

Methanol has a measured log Kow of -0.82 to -0.64 (OECD 2004).

OECD (2004): SIDS Initial Assessment Report for SIAM 19, Berlin, Germany, 18-20 October 2004, Methanol, CAS 67-56-1.