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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

No studies on toxicity to microorganisms with dipotassium persulfate were available. A read across approach was applied to studies with diammonium persulfate, as the substance shows similar ecotoxicological properties. The toxicity of microorganisms to diammonium persulfate was tested in a study according to guidelines NEN 6509 and NPR 6508. The study revealed an EC10 (18 h) of 36 mg/L.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
36 mg/L

Additional information

No study on toxicity to microorganisms with dipotassium persulfate was available. Instead a read across approach was applied to assess the toxicity to microorganisms using data available for diammonium persulfate, a substance considered to exhibit comparable ecotoxicological properties. In the key study the toxicity of diammonium persulfate to the gram negative bacterium Pseudomonas putida was determined in a growth inhibition test according to guidelines NEN 6509 and NPR 6508. Bacteria were exposed in a static test to concentrations of diammonium persulfate up to 100 mg/L. The study revealed an EC10 (18 h) of 36 mg/L.