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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The effect of the read-across source, Hydroxypropyl, 2-, trimethylammonium formateo on the respiration of activated sewage sludge gave a 3-Hour EC50 value of greater than 1000 mg/L. The No Observed Effect Concentration (NOEC) after 3 hours exposure was 1000 mg/L.

It was considered unnecessary and unrealistic to test at concentrations in excess of 1000 mg/L.

The reference item gave a 3-Hour EC50 value of 9.3 mg/L, 95% confidence limits 7.3 to 12 mg/L.

Key value for chemical safety assessment

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

Additional information