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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Under the conditions of the test, Desmodur 3175 had no inhibitory effect on the respiration of microorganisms from sewage sludge.
3h EC50 for respiration, activated sludge > 10000 mg/L.

Key value for chemical safety assessment

Additional information

An experimental study (Bayer, 1988) reported results of acute toxicity of HDI Trimer MELO-blocked to bacteria from activated sludge. The study was performed according to OECD Guideline No 209.