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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

The inhibition of the degradation activity of activated sludge is not anticipated when introduced in appropriately low concentrations.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
18 mg/L

Additional information

This endpoint is sufficiently covered by the data on biodegradability (please see Section 5.2).

The results of the key study in Section 5.2 indicate that

a) potassium formate is readily biodegradable,

b) disturbances in sewage treatment plants are not to be expected when potassium formate is released in appropriate amounts, and

c) inhibitory effects of potassium formate to sewage sludge bacteria were not observed at the tested concentration 18 mg/L.