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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

TCD-emulsifier does not exhibit any adverse effects on microorganisms. 

Key value for chemical safety assessment

EC50 for microorganisms:
1 000 mg/L
EC10 or NOEC for microorganisms:
1 000 mg/L

Additional information

To investigate potential harmful effects of TCD-emulsifier on microorganisms, an activated sludge respiration inhibition test was performed according to OECD 209 and under GLP. No inhibiting effects were observed after 180 min. Hence, an EC50 value of > 1000 mg/L and a NOEC of ≥ 1000 mg/L was determined. Results in most of the test vessels showed negative respiration inhibition, presumably due to the biodegradation of the test item.