Registration Dossier
Registration Dossier
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EC number: 273-734-4 | CAS number: 69012-34-6 By-product from open-hearth steelmaking. Consists of oxides of calcium, iron, silicon and vanadium.
Toxicity to aquatic algae and cyanobacteria
Administrative data
Link to relevant study record(s)
Description of key information
A reliable GLP-conform study (Klimisch 2) is available for the effect of vanadium slag on the biomass and growth rate of the alga Scenedesmus subspicatus, according to the OECD 201 guideline and the water-accommodated fraction approach. Results for growth rate are preferred for the hazard assessment. The 72h ErC50 and ErC10 values for growth rate are >950 and 217 mg/L, respectively (Mitterer, 1999c).
Key value for chemical safety assessment
- EC50 for freshwater algae:
- 950 mg/L
- EC10 or NOEC for freshwater algae:
- 217 mg/L
Additional information
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