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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Key value for chemical safety assessment

EC50 for freshwater algae:
113 mg/L
EC10 or NOEC for freshwater algae:
50 mg/L

Additional information

According to the Biotechnology Research Institute of NRC, 2010, the 96h EC50 was found to be 2323.7 mg/L.

The toxicity to aquatic algae was also examined by AnalyCen Ecotox AS. The72 hours EC50 value for the test substance NTO, Nitrotriazolone was found to be 113 mg/L.

According to Haley Mark V.,Kuperman Roman G., Checkai Ronald T. (Aquatic Toxicity of 3-Nitro-l,2,4-triazol-5-one ), 96h NOEC for the test substance to Scenedesmus capricornutum is 1375 mg/L; 96h LOEC for the test substance to Scenedesmus capricornutum is 2680 mg/L.

The calculation by EPIWIN was showing EC50 of 1329.272 mg/L after 96 hours exposure.