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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

With high probability acutely not harmful to aquatic algae.

Key value for chemical safety assessment

Additional information

The toxicity of ethylene urea on aquatic algae was investigated with Selenastrum capricornutum in a GLP guideline study according to OECD 201 (BASF, 299A-116, 2001). No inhibition was observed up to the highest test concentration of 119 mg/L. This result is supported by a publication for the hazard assessment of the test item to Chlorella pyrenoidosa. The EC50 value (based on the growth rate after 96 hours) was determined to be 16000 mg/L (Van Leeuwen 1985).