Registration Dossier
Registration Dossier
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EC number: 205-249-0 | CAS number: 136-51-6
Endpoint summary
Administrative data
Description of key information
Calcium as an essential element has a very low potential for toxicity to freshwater and saltwater organisms. Aquatic effect concentrations available for several species are above respective OECD test limits:
- 96h-LC50 values of 1670.2, > 579.4 and > 1785.4 mg calcium /L were determined depending on the calcium salt used for the freshwater fish Pimephales promelas.
- 48h-LC50 values of 4410 and 4610 mg calcium/L were determined for saltwater fish species C. variegatus and M. beryllina, respectively.
- lowest 48-h LC50 of 561.7 (C. dubia) and 1100.0 mg calcium/L (M. bahia) were observed for fresh- and saltwater species, respectively (hydrated lime (CaOH2) studies without pH adaption excluded)
- an unbounded value of > 100 mg calcium/L can at least be expected for activated sludge microorganisms
- the lowest 96h- EC10 for green algae P subcapitata amounted to 100.2 mg/L calcium and a 7d - EC10 of 272.5 mg Ca/L was obtained for aquatic macrophyte Lemna minor
In sum, calcium has very low potential for aquatic toxicity.
Additional information
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