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EC number: 218-760-9 | CAS number: 2226-96-2
Invertebrates are the most sensitive species to the toxic effects of 4-OH TEMPO with an acute EC50 of 54 mg/L. Based on the results obtained in the aquatic toxicity studies, 4-OH TEMPO is not classified with respect to acute toxicity to the environment according to Directive 67/548/EEC (DSD) and Regulation (EC) No 1272/2008 (CLP/GHS).
Invertebrates are the most sensitive species to the toxic effects of 4-OH TEMPO with an acute EC50 of 54 mg/L and a NOEC of 1.5 mg/L derived from a daphnia reproduction study. Classification is based on the chronic daphnia study. Based on these results, the substance does not require classification for environmental chronic toxicity according to Directive 67/548/EEC (DSD) and Regulation (EC) No 1272/2008 (CLP/GHS).
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