Registration Dossier
Registration Dossier
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EC number: 910-697-1 | CAS number: -
Long-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
No studies have been conducted on the reaction mass of CaF2, CaSO4 and CaCO3. Instead information is available on the 3 different constituents.
Calcium sulfate and calcium carbonate, are ubiquitous in the environment and essential to living organims: no long-term studies are available and no hazards are expected for both constituents.
As no studies are available for calcium fluoride, available studies on NaF have been used instead. The chosen key value was the lowest reported NOECs among all the evaluated studies reported in EU RAR 2001 on a 21d study on Daphnia magna. Observed NOEC was 3.7 mg/L F-, which converts in 7.6 mg/L CaF2.
On the basis of the available NOEC for CaF2, the NOEC value for the reaction mass can be concluded: 15.2 mg RM/L. This value is calculated by taking into account that the reaction mass contains only 50% of CaF2 (ca. 47.5 w/w % CaF2) and that the additional of Ca2+ through CaSO4 and CaCO3 would even further reduce the toxicity of CaF2 as free F- will be complexed.
Key value for chemical safety assessment
Fresh water invertebrates
Fresh water invertebrates
- Dose descriptor:
- NOEC
- Effect concentration:
- 15.2 mg/L
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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