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Environmental fate & pathways


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Description of key information

A study on hydrolysis does not need to be conducted.

Key value for chemical safety assessment

Additional information

In accordance with column 2 of REACH Annex VIII, the hydrolysis test does not have to be conducted because AAPB is readily biodegradable. It is shown that biodegradation is the primary route of degradation in the environment.

In addition limited information is available from an EPIWIN calculation. However, there are no details whether the calculation model is validated for the substance under investigation, therefore reliability is not assignable. The stability (hydrolysis) of Coco AAPB was calculated using EPIWIN, HYDROWIN v1.67. Hydrolysis is not to be expected under environmental conditions: the calculated hydrolysis half-life time (t1/2) for Coco AAPB consisting of C8 -C18 fatty acids was found to be > 1 year.