Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Partition coefficient

Currently viewing:

Administrative data

Link to relevant study record(s)

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.