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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

3 hr EC50 respiration inhibition( activated sludge): ca. 10,000 mg/l. 
3 hr EC10 respiration inhibition( activated sludge): ca. 1,800 mg/l.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
1 800 mg/L

Additional information

Toxicity to microorganisms has been tested with a sample of activated sludge from a domestic waste water treatment plant over a 3-hour period at concentrations from 1,000 to 10,000 mg/l. At 10,000 mg/l an inhibition of 48.5% was observed. The EC50 is therefore estimated to be ca. 10,000 mg/l (nominal). At 1,800 mg/L an inhibition of 9.9% was observed. The EC10 is therefore estimated to be ca. 1,800 mg/L (nominal).

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