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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

Waiver: study technically not feasible

Key value for chemical safety assessment

Additional information

Waiver: study technically not feasible.

The test material FAT 20035 is a dark color dye which when mixed in test medium will impart dark color. Due to light absorption, colored substances such as dyes can inhibit algal growth, which is not the result of a toxic action. This shading effect can confound measures of chemical toxicity and thus impair the risk assessment. In an effort to avoid this problem Lemna gibba (Duckweed) Growth Inhibition test (Static) is conducted.