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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ready biodegradation studies (OECD 301B) were conducted on the mixed isomers of dimethyl 1,4-cyclohexanedicarboxylate (CAS 94 -60 -0) and the trans isomer of dimethyl 1,4-cyclohexanedicarboxylate (CAS 3399 -22 -2). In the study of the trans isomer greater than 74% degradation had occured at day 27, but due to an extended lag phase the 10 day window was not achieved. However, > 60% degradation did occur in slightly less than 12 days after 10% degradation had occurred. In a subsequent study using the mixed isomers, soil and sediment was added to the innoculum as allowed by the method in an effort to provide a more diverse microorganism population to help decrease the lag period. In that study the lag period was decreased but biodegradation plateaued at a maximum of 55% at 28 days. Both studies show a high degree of ultimate biodegradation, but based upon these results

dimethyl 1,4-cyclohexanedicarboxylate cannot be considered as readily biodegradable under the strict conditions of the test.