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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Microbial inhibition: EC50 - 370mg/L;  NOEC 100 mg/L

Key value for chemical safety assessment

EC50 for microorganisms:
370 mg/L
EC10 or NOEC for microorganisms:
100 mg/L

Additional information

Microbial inhibition has been investigated in an activated sludge respiration inhibition test conducted in accordance with OECD/EU test methods. The outcome of this test indicated an IC50 of 370 mg/L and a NOEC of 100 mg/L. An earlier study IC50 reports an IC50 in excess of 100 mg/L and later statistical calculation from the reported data using the methods of Litchfield and Wilcoxon gave an IC50 of 969 (687 - 1367) mg/L while the methods of Finney gave an IC50 of 969 (185 - 14863) mg/L.