Registration Dossier
Registration Dossier
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EC number: 297-648-1 | CAS number: 93685-99-5 Oil shale waste is produced by thermal processing in a fluidized bed process at 800°C from mining exhausted oil shale. Oil shale waste consists essentially of Al2O3, CaO, CaSO4, Fe2O3 and SiO2.
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
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.
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