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Partition coefficient

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Description of key information

The QSAR determination revealed a logarithmic octanol-water partition coefficient (log Kow) of 6.66 for Mecoprop-P n-octyl ester.

Key value for chemical safety assessment

Log Kow (Log Pow):
6.66
at the temperature of:
25 °C

Additional information

The QSAR determination revealed a logarithmic octanol-water partition coefficient (log Kow) of 6.66 for Mecoprop-P n-octyl ester.

The logPow of Preventol B5 is 6.66 (calculated).

However the value of the hydrolysis product Mecoprop-P acid (MCPP-P acid) is taken for assessment as the free acid is considered to be relevant for the environment. The measured log Kow of the hydrolysis product Mecoprop-P acid is 0.02 at pH7 and 20°C.