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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

Activated sludge: EC0>2000mg/l
POLYSEED: IC10=5000mg/l, IC50>50000mg/l
Sewage sludge microorganisms: IC50>5000mg/l

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
2 000 mg/L

Additional information

In an activated sludge respiration inhibition test, no inhibition was found up to the maximum tested concentration of 2000mg/l. In a Microtox assay using a photobacterium, the IC50 was not reached up to the maximum tested concentration of 5000mg/l. Against a broad spectrum micro-organisms mixture an IC10 of 10000mg/l and an IC50 of 23500mg/l was established. The data indicates that the substance is effectively non toxic to micro-organisms.