Registration Dossier
Registration Dossier
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EC number: 272-897-9 | CAS number: 68919-40-4
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Conclusion on classification
SUMMARY OF AVAILABLE DATA (key values)
Acute toxicity to aquatic organisms (pelagic):
- Fish: no data (not required for 1-10 tpa tonnage band registration);
- Crustaceans (Daphnia magna): 48h-EC50 = 54.81 mg/L;
- Algae (Raphidocelis subcapitata): 72h-ErC50 = 7.68 mg/L.
Chronic toxicity to aquatic organisms (pelagic):
- Fish: no data (not required for 1-10 tpa tonnage band registration);
- Crustacean: no data (not required for 1-10 tpa tonnage band registration);
- Algae (Raphidocelis subcapitata): 72h-ErC10 = 1.07 mg/L.
Environmental fate:
- Not rapidly degradable in the environment (less than 60% mineralization in 28 days in a ready biodegradability test);
- Low bioaccumulation potential (based on log Kow < 4).
According to the CLP hazard classification criteria, the substance Reaction product of 1H-Imidazole-1-ethanol, 4,5-dihydro, 2-(C11-17 and C17 unsatd. alkyl) derivs. and acrylic acid would not have to be classified for acute or chronic environmental hazard. The substance is however self-classified as Aquatic Chronic 2 (H411) - Toxic to aquatic life with long lasting effects. This results from a worst-case classification taking into account an acute fish toxicity data in the range >1 - <10 mg/L reported for a very similar compounds, a.k.a. Reaction products of 1H-Imidazole-1-ethanol, 4,5-dihydro-, 2-(C7-C17 odd-numbered, C17-unsatd. alkyl) derivs. and methyl acrylate and sodium hydroxide (939-640-9). This read-across acute aquatic toxicity data, combined with available environmental fate data (i.e. not rapidly degradable), supports the classification for chronic environmental hazard. As the substance Reaction product of 1H-Imidazole-1-ethanol, 4,5-dihydro, 2-(C11-17 and C17 unsatd. alkyl) derivs. and acrylic acid is registered under the 1-10 tpa tonnage band, acute fish toxicity data is not a mandatory requirement. Hence, neither ESS/ESR nor read-across justification document are included in the IUCLID dossier for the acute fish toxicity endpoint.
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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