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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Description of key information

72-hour NOELR was calculated to be 3.2 mg test item/L.

Key value for chemical safety assessment

Additional information

The influence of oil shale thermal processing residue on the growth of the freshwater green algae Pseudokirchneriella subcapitata was assessed in a static dose-response test according to OECD guideline 201 and GLP. The 72-hour EL50 value was calculated to be 82.7 mg test item/L and the 72-hour NOELR was calculated to be 3.2 mg test item/L.