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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

EC10 (3 h) = 880 mg/L
NOEC (3 h) = 10 mg/L

Key value for chemical safety assessment

Additional information

One reliable GLP study, investigating the toxicity to microorganisms, is available for NBPT (Clarke, 2001). This test on respiration inhibition of activated sludge was conducted according to OECD 209 and EU-Method C.11 at nominal test concentrations of 3.2, 10, 32, 100, 320 and 1000 mg/L. The determined EC10 (3 h) was 880 mg/L (nominal) and the corresponding NOEC 10 mg/L (nominal).