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EC number: 289-214-5
CAS number: 86261-90-7
The 48 hour EC50 (immobilisation) value for ureido methacrylate with Daphnia magna was determined to be 789 mg/L.
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.
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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