Registration Dossier
Registration Dossier
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EC number: 700-371-5 | CAS number: 178535-25-6
Endpoint summary
Administrative data
Description of key information
Additional information
The acute toxicity of Ethylbenzene, manuf. of, distn. residues, distn. lights. to the freshwater invertebrate Daphnia magnahas been investigated and gave a 48-Hour EL50value based on nominal loading rates of 1.3 mg/L with 95% confidence limits of 1.0 – 1.8 mg/L loading rate WAF. The No Observed Effect Loading rate at 48 hours was 1.0 mg/L loading rate WAF.
A study was performed to assess the effect of Ethylbenzene, manuf. of, distn. residues, distn. lights. on the growth of the green algaDesmodesmus subspicatus. The alga were exposed to nominal loading rates of 1.0, 3.2, 10, 32 and 100 mg/L (three replicate flasks per test concentrations and 6 replicated control flasks). Absorption of the test substance by the algal cells was observed. The EL50 was determined to be 6.2, 3.8 and 3.5 mg/L in respect to growth, yield and biomass.The No Observable Effect Loading Rate was 3.2, 1.0 and 1.0 mg/L in respect to growth, yield and biomass. The Lowest Observable Effect Loading Rate was 10, 3.2 and 3.2 mg/L qith respect to growth, yield and biomass.
According Directive 67/548/EEC, Ethylbenzene, manuf. of, distn. residues, distn. lights. should be classified as R51/53: Toxic to aquatic organisms and May cause long-term adverse effects in the aquatic environment.
According to Regulation (EC) No. 1272/2008, Ethylbenzene, manuf. of, distn. residues, distn. lights. should be classified as Aquatic Chronic Category 2.
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