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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

Biodegradation in water

No adequate studies investigating the biodegradability of the test substance in water were identified. However, data from a structural analogue (read across substance) are available.

A closed bottle test was conducted according to OECD guideline 301D to assess the biodegradation rate of the analogue substance 9-Octadecenoic Acid within 28 days. Sodium benzoate was used as reference substance. Activated sludge from a domestic treatment plant was used as inoculum. The analogue substance was tested in two concentrations (2 and 5 mg/L) in two replicates each. As the oxygen content in the high concentration flasks was not as high as demanded for biodegradation, only the result of the 2 mg/L test substance concentrations were analyzed. The biodegradation rate (given as BOD /COD *100) was calculated to be 76 % after 7 days and 92 % within 28 days for the analogue substance, which therefore is concluded to be readily biodegradable. Another study revealed a BOD5 rate of 48 % (Canton J.H., W. Slooff, (1982). Substitutes for Phosphate Containing Washing Products: Their Toxicity and Biodegradability in the Aquatic Environment. Chemosphere 11:891ff).