Registration Dossier
Registration Dossier
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 231-179-5 | CAS number: 7440-70-2
Endpoint summary
Administrative data
Description of key information
Additional information
- In accordance with REACH Annex VII Column 2 adaptation statement, ready biodegradability study does not need to be conducted if the substance is inorganic.
- Based on the known chemistry of alkaline earth metals, Ca metal reacts with water, evolving hydrogen gas. In powdered form the reaction with water is extremely rapid. In the Ca-water reaction calcium dihydroxide is formed. Therefore, testing of elemental Ca is not feasible. However, if elemental Ca reacts with water forming calcium dihydroxide (Ca(OH)2) this substance fully dissociates in water to calcium ions (Ca2+) and hydroxyl ions (OH-).
- In accordance with Annex XI.3 and Column 2 adaptation statements, biodegradation can be also considered irrelevant for elemental Ca based on the environmental exposure considerations. Elemental Ca is used in iron, steel and alloy manufacturing processes mostly in massive forms such as lumps, turnings and strips or granules of 2-7 mm. The exposure based considerations of Ca in these use applications indicate that there are no intended releases of Ca into water and soil compartments because Ca metal will immediately react under the extreme heat conditions of these processes to form CaO which may be emitted as a component of the fume or dust from the furnace or become part of the slag. In addition, the exposure and bioavailability information indicate that there is no need to consider biodegradation data on the relevant Ca compounds. See supporting exposure assessment information in CSR Chapter 9.
Biodegradation testing in water, sediment and soil is not considered applicable for elemental calcium (Ca) for three reasons: (1) substance is inorganic (2) testing is not feasible because of Ca reactivity in water and (3) direct and indirect exposure of Ca to aquatic, sediment and soil compartment is unlikely.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
