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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Link to relevant study record(s)

Description of key information

One study resulted in 72h-EC50 of greater than 0.03 mg/L and NOEC of 0.03 mg/L (Tobor-Kaplon, 2014).

Key value for chemical safety assessment

EC50/LC50 for freshwater algae:
0.03 mg/L
EC10, LC10 or NOEC for freshwater algae:
0.03 mg/L

Additional information

One study is available which was conducted according to OECD Guideline 201 under GLP (Tobor-Kaplon, 2014).

Under the conditions of this study with Pseudokirchneriella subcapitata, no inhibition of growth rate or inhibition of yield was recorded at any of the concentrations of the test substance. The EC50 for growth rate (72h-ErC50) and the EC50 for yield inhibition (72h-EyC50) was beyond the range tested, i.e. exceeded a TWA concentration of 0.030 mg/L being considered the maximum soluble concentration in test medium. The 72h-NOEC for growth rate inhibition and yield inhibition was 0.030 mg/L based on TWA concentrations. In summary, the test substance was not toxic to algae at the limit of its solubility in water.