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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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

Environmental fate & pathways

Hydrolysis

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Administrative data

Link to relevant study record(s)

Description of key information

In accordance with Regulation (EC) No 1907/2006, Annex VIII, 9.2.2.1, column 2, a hydrolysis study does not need to be conducted if the substance is highly insoluble in water.

Key value for chemical safety assessment

Additional information

Hydrolysis does not contribute to the abiotic degradation of Fatty acids, C16 -18 and C18-unsaturated, dimerized (CAS No. 71808-39-4). In general, fatty acids have no hydrolysable groups and are therefore not susceptible to hydrolysis. This holds also true for the members of the dimerised fatty acid category. Considering further that all sub-category 2 members have a low water solubility (< 0.52 mg/L), they are expected to be stable in water under environmental conditions. Thus, in accordance with Regulation (EC) No 1907/2006, Annex VIII, 9.2.2.1, column 2, a hydrolysis study does not need to be conducted.