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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The acute toxicity in fresh water algae was evaluated for an analog of this substance, EC 283-392-8 and ErL50 (0-72hr) value of 24 mg/L loading rate WAF was obtained. Therefore, the test substance is expected to be acutely not harmful to algae. 

Key value for chemical safety assessment

EC50 for freshwater algae:
24 mg/L

Additional information

Since tests on toxicity of the UVCB substance itself to aquatic algae are not available, a conclusion by analogy approach according to Annex XI of REACH has been applied.

The acute toxicity of an analog of this substance, EC 283-392-8,was evaluated in freshwater algae in accordance with OECD Guideline 201 (Vryenhoef, H, 2005). Exposure of Scenedesmus subspicatus to the test material gave an EbL50 (72h) value of 21 mg/L loading rate WAF and an ErL50 (0-72hr) value of 24 mg/L loading rate WAF. The No Observed Effect Loading rate was 10 mg/L loading rate WAF.