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Physical & Chemical properties

Partition coefficient

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Description of key information

Log Kow ((3-chloropropyl)dimethoxymethylsilane): 3.2 at 20°C (QSAR)
Log Kow ((3-chloropropyl)methylsilanediol): 0.8 at 20°C (QSAR)

Key value for chemical safety assessment

Log Kow (Log Pow):
3.2
at the temperature of:
20 °C

Additional information

The requirement to test the substance for octanol-water partition coefficient is waived because in contact with water the substance rapidly hydrolyses to form (3 -chloropropyl)methylsilanediol and methanol. The Log Kow of the 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).