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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Acute toxicity on aquatic algae and cyanobacteria (freshwater Green Alga)

Key value for chemical safety assessment

EC50 for freshwater algae:
36.6 mg/L
EC10 or NOEC for freshwater algae:
25 mg/L

Additional information

To determine the acute toxicity of CHDM DGE to the freshwater green alga, Pseudokirchneriella subcapitata, two non-GLP screening assays were conducted. When possible, these data were used to determine EC50 and no-observable effect concentration (NOEC) values. Algae were exposed to solutions of 0, 1, 10, 25 and 50 mg/L of CHDM DGE. After 72 hours of exposure, algal cells counts were recorded and EC50 (the concentration at which a 50% inhibition occurs) no-observable effect concentrations (NOEC) for cell density were calculated. EC50 and NOEC values for CHDM DGE was 36.6 mg/L and 25 mg/L, respectively.