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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The ready biodegradability of the test item was assessed over a 28 day period by the modified Sturm test (OECD 301B). The nominal test concentrations were 10 and 20 mg a.s./L. The test material attained up to 7 and 2 % biodegradation after 28 days whereas the positive control substance (Aniline) was  101 % in 28 d. These results indicate that the test item cannot be classified readily biodegradable under conditions of the test. The biodegradability was also determined in a Modified Zahn-Wellens Test (OECD 302 B) by measuring the fate of the test substance by specific analysis. The biodegradation calculated as percentage of measured test substance concentration related to initial concentration determined was: 13 % and 8 % (duplicate determination; mean value 11%). The test substance was not inherently biodegradable in this test when measured by specific analysis.

Additional QSAR calculations with Catalogic v5.11.19, Catalogic 301C v09.13 revealed a degradation of 3% after 28d. The main metabolite was3-(3,5-ditert-butyl-4-hydroxy-phenyl)propanoic acid.

The test substance was found to be poorly biodegradable in an 301B study. It is assumed that the results of further simulation studies would not reveal any different findings. Therefore, further simulation studies in water/sediment and soil are not provided.