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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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Diss Factsheets

Environmental fate & pathways

Biodegradation in water: screening tests

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Administrative data

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Description of key information

Mecoprop-P n-octyl ester is not readily biodegradable with 38 % degradation observed within 28 days, and also not inherently biodegradable with only 41 % degradation within 28 days. The biodegradation of the hydrolysis product Mecoprop-P acid was determined according to the OECD Guideline 301 F, and a biodegradation rate of 85 % within 28 days was observed.

Key value for chemical safety assessment

Biodegradation in water:
under test conditions no biodegradation observed

Additional information

Mecoprop-P n-octyl ester hydrolyses rapidly in natural water. Therefore, the hydrolysis product Mecoprop-P acid (MCPP-P acid) was used for further risk assessment of Mecoprop-P n-octyl ester in the environment.


Mecoprop-P acid (MCPP-P acid) is considered to be "Readily Biodegradable".