Registration Dossier
Registration Dossier
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EC number: 247-810-2 | CAS number: 26566-95-0
Endpoint summary
Administrative data
Description of key information
Additional information
The acute aquatic toxicity of a structurally similar substance suitable for read across was evaluated using rainbow trout and was conducted in accordance with OECD 203. The 96 h LL (Lethal Loading Rate) 50 value of the substance was determined to be 4.4 mg/l. The No Observed Effect Loading rate was 3.2 mg/l (WAF).
Then acute toxicity was also evaluated inDaphnia(OECD 202). The 48-Hour EL50 was determined to be 75 mg/L nominal loading rate and the No Observed Effect Loading rate was 32 mg/l (nominal).
The acute toxicity was also evaluated in freshwater algae in accordance with OECD Guideline 201. Exposure ofScenedesmus subspicatusto the test material gave a 72 h EbL50 (effective loading rate that causes 50% reduction inalgalcell biomass) value of 240 mg/L loading rate WAF and 0-72 h ErL50 (effective loading rate that causes 50% reduction inalgalgrowth rate) value of 410 mg/L loading rate WAF. The No Observed Effect Loading rate was 220 mg/L loading rate WAF.
Long term ecotoxicological data are available on a surrogate ZDDP substance for invertebrates and algae. A 21 day reproduction test in Daphnia magna was conducted following OECD Guideline 211. Results from this study show that the NOEC for reproduction was 0.4 mg/L nominal (0.262 measured), and the NOEC for daphnid length and weight was 0.8 mg/L nominal.
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