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Physical & Chemical properties

Partition coefficient

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Description of key information

The partition coefficient: logPow  ≤ -2.03 at 20 °C (OECD 107, Computational Approach).

Key value for chemical safety assessment

Additional information

According to the REACH Guidance on information requirements and chemcial safety assessment - Chapter R.7a: Endpoint specific guidance, the shake-flask method is not recommended for surfactants. Instead, the slow-stirring method is advised as the preferred test method in this case.

The experimental result by means of slow-stirring method is log Pow = 0.83 (OECD 123)

However, according to the applied guideline the slow-stirring method is particularly suitable for the determination of substance with expected log Pow value of 5 and higher. Therefore the calculation of partition coefficient was performed by using a computational approach, which is cited in OECD Guideline 107 (EUA.8.). The result is more reliable compared with the experimental result.