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Ecotoxicological information

Toxicity to microorganisms

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Description of key information

No inhibition of the degradation of the reference substance was observed in the toxicity control of this test in the presence of 47.62 mg/L of test substance or 28.57 mg a.i./L.

Key value for chemical safety assessment

EC10 or NOEC for microorganisms:
28.57 mg/L

Additional information

The toxicity of (hydroxyethyl)urea to micro-organisms has been evaluated in a ready biodegradability test. The ready biodegradability of (Hydroxyethyl)urea was tested according to OECD TG 301B. (Hydroxyethyl)urea was observed to be completely biodegraded within 28 days. No inhibition of the degradation of the reference substance was observed in the toxicity control of this test in the presence of 47.62 mg/L of test substance or 28.57 mg a.i./L. This result is will be used to evaluate the hazard to micro-organisms in an sewage treatment plant