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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The potential toxic effect of Desmodur MT was testet according to the Commission Directive 88/302/EEC; OfficialJournal of the EG L 133 Part C.11 (1988),"Activated Sludge Respiration Inhibition", which is equal to OECD Guideline 209. Up to the hightest concentration of 10000 mg/L tested, Desmodur MT showed 5.3 % respiration inhibition on activated sludge within 3 hours (Bayer Industry Services, 2006).

Key value for chemical safety assessment

EC50 for microorganisms:
10 000 mg/L

Additional information

should read EC50 >10000 mg/L