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Ecotoxicological information

Toxicity to microorganisms

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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.