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Ecotoxicological information

Short-term toxicity to aquatic invertebrates

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Description of key information

The 48 hour EC50 (immobilisation) value for ureido methacrylate with Daphnia magna was determined to be 789 mg/L.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
789 mg/L

Additional information

The acute toxicity of ureido methacrylate to Daphnia magna was assessed under static exposure conditions. This study was conducted in accordance with the test guidelines EC Methods for Determination of Ecotoxicity Annex to Directive 92/69/EEC Part C, Method 2 "Acute Toxicity to Daphnia" and OECD Guideline for Testing of Chemicals No. 202, Part I "Daphnia Acute Immobilisation Test and Reproduction Test". Groups of twenty, first instar Daphnia, less than 24 hours old, were exposed to ureido methacrylate dispersed in Elendt M4 medium for 48 hours at nominal concentrations of 46, 100, 220, 460 and 1000 mg/L. Actual mean measured test concentrations were 44, 98, 207, 435 and 929 mg/L. Measured concentrations ranged from 95 - 98% of nominal at 0 hours and 91 - 98% of nominal at 48 hours. The numbers of immobilised daphnids were recorded for each test and control group after 24 and 48 hours. The 48 hour EC50 (immobilisation) value for ureido methacrylate with Daphnia magna was determined to be 789 mg/L. The 'No-observed effect concentration' (NOEC) was 435 mg/L.

Supportin study

The acute toxicity of HYDROXYETHYLIMIDAZOLIDONE METHACRYLATE to Daphnia magna (OECD 202) was assessed under static exposure conditions. The EC50 (48h) was greater than 100 mg/l. (Arkema,2004)

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