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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

72h-ErC50 >1000 mg/l, 72h-NOEC 171 mg/l for P. subcapitata (OECD TG 201)

Key value for chemical safety assessment

EC10 or NOEC for freshwater algae:
171 mg/L

Additional information

The toxicity of NTAN to freshwater algae (P. subcapitata) was assessed in an algal growth inhibition test in accordance with OECD TG 201 under GLP. Slight modifications to the guideline were applied to ensure good growth and pH control of the cultures.

No effect was found on growth rate up to 171 mg/L, therefore the 72h-NOEC is 171 mg/L. The 72h-ErC10 is 652 mg/L. 50% effect was not reached, therefore the 72h-ErC50 is > 1000 mg/L.