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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Toxicity to microorganisms

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Administrative data

Link to relevant study record(s)

Description of key information

Inhibition of microorganisms activity is unlikely to occur when exposed to 1,2-Benzenedicarboxylic acid, di-C16-18-alkyl esters

Key value for chemical safety assessment

Additional information

A study investigating the effect of 1,2-Benzenedicarboxylic acid, di-C16-18-alkyl esters (CAS 90193-76-3) to activated sludge microorganisms is available. The test was conducted according to OECD Guideline no. 209 (1984): “Activated sludge, Respiration Inhibition test”, under GLP conditions. After 3 hours of exposure to the test substance, no effects on respiration rate were observed. The EC50 was determined to be greater than 100 mg/L (nominal concentration). Furthermore, the results from the ready biodegradability study showed that this substance is not inhibitory to activated sludge microorganisms (40% biodegradation after 14 days in toxicity control). Therefore, disturbances in the biodegradation process of a sewage treatment plant due to exposure to 1,2 -Benzenedicarboxylic acid, di-C16-18-alkyl esters are not anticipated.