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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways


Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

Homosalate has been investigated for abiotic hydrolysis at  pH 4, pH 7 and pH 9 and showed to be rapidly degraded under environmentally relevant pH with a estimated half-life of 215 hours at neutral pH (pH 7).

Key value for chemical safety assessment

Half-life for hydrolysis:
215 h
at the temperature of:
25 °C

Additional information

The assessment of hydrolytic stability of the test compound was carried out using a procedure designed to be compatible with Method C7 Abiotic Degradation, Hydrolysis as a Function of pH of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 111 of the OECD Guidelines for Testing of Chemicals, 13 April 2004. The results are as follows:

pH 4 Estimated half-life at 25 °C is 210 hours

pH 7 Estimated half-life at 25 °C is 215 hours

pH 9 Estimated half-life at 25 °C is 69.7 hours

With a half-life time of < 16 days (9 days for pH 7) the criteria for rapid degradation according to the CLP/GHS criteria are fulfilled as the degradation products salicylic acid (2-hydroxylbenzoic acid) and 3,3,5-trimethylcyclohexanol are not classified as hazardous to the aquatic environment.