Registration Dossier
Registration Dossier
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EC number: 457-320-2 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Acute freshwater toxicity studies are available for EC# 457-320-2 or the related substance, EC# 434-650-5, across three trophic levels: algae, Daphnia and fish (two fish studies); a chronic toxicity study is also available for Daphnia. In addition, an activated sludge respiration inhibition test is available.
In each study, Water Accommodated Fractions (WAFs) of test material were used due to the poor solubility of the substances in water. The following results (presented as nominal loading rates) were obtained:
- Algae (EC# 434-650-5), 72-hour NOELR = 4.05 mg/L; 72-hour EbL50 = 9.62 mg/L; 72-hour EtL50 = 14.0 mg/L
- Daphnia (EC# 457-320-2), 48-hour LOELR = 42 mg/L; 48-hour EL50 = 50 mg/L
- Daphnia (EC# 457-320-2), 21-day NOELR = 100 mg/L
- Fish (EC# 434-650-5), 96-hour NOELR = 94.8 mg/L
- Supporting Fish (EC# 434-650-5), 96-hour NOELR = 670 mg/L; 96-hour LL50 = >670 mg/L
- Microorganisms (EC# 434-650-5), 3-hour NOELR = 100 mg/L
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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