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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

In order to test the toxicity to microorganisms of the substance, activated slugde from predominantly domestic sewage plant was exposed to the test solution of five nominal concentrations of the substance (56, 100, 180, 320 and 560 mg/L) , blank control solution and solution with positive reference substance for a period of 3 hours. Dissolved oxygen was recorded and respiration rate were calculated. The test item showed 40.9 % respiration inhibition of activated slugde and an EC50 of 196 mg/L was obtained. The effect value relates to nominal concentration, since no analytical montitoring was performed.

Key value for chemical safety assessment

EC50 for microorganisms:
196 mg/L

Additional information