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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The 3h-EC10 for activated sludge was 222 mg/l and the 3h-EC50 was 345 mg/l in a respiration inhibition test with OECD Test Guideline 209 under GLP (concentration based on active ingredient). 

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
222 mg/L

Additional information

The toxicity to activated sludge was determined in a respiration inhibition test in accordance with OECD Test Guideline 209, and in compliance with GLP. The toxicity of Aromatic hydrocarbons, C10-13, reaction products with branched nonene, sulphonated, sodium salts to activated sludge was determined at a contact time of 3 hours, using various concentrations of the test substance. The EC50 was reported as 651 mg/L with 95% confidence limits of 439 and 1221 mg/L based on testmaterial. The EC10 was 420 mg/L based on test material. The EC50 is 345 mg/L and EC10 is 222 mg/l based on active ingredient concentration. The substance is therefore considered not harmful to activated sludge (Reliability 1).