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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

The Growth Inhibition of K-36 to Algae (Pseudokirchneriella subcapitata) has been assessed according to the OECD 201 test guideline in accordance with GLP with analytical monitoring at the start and end of exposure by HPLC. Due to low solubility test solutions were prepared using the supernatant of supersaturated solutions.

Key value for chemical safety assessment

EC50 for freshwater algae:
100 mg/L
EC10 or NOEC for freshwater algae:
100 mg/L

Additional information

The Growth Inhibition of K-36 to Algae (Pseudokirchneriella subcapitata) has been assessed according to the OECD 201 test guideline in accordance with GLP with analytical monitoring at the start and end of exposure by HPLC. Due to low solubility test solutions were prepared using the supernatant of supersaturated solutions. Under the conditions of this algal growth inhibition test the observed endpoints for the effect of K-36 the 72h EbC50 value (biomass) and 72h ErC50 value (growth rate) is > 100 % v/v saturated solution. Based on the results of this study, the test item K-36 had no toxic effect at saturation (0.032 mg/L, measured); the EC50 results and the LOEC are higher than the solubility level of the test item in the test medium.