Registration Dossier
Registration Dossier
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EC number: 232-263-4 | CAS number: 7803-62-5
Bioaccumulation: aquatic / sediment
Administrative data
Link to relevant study record(s)
- Endpoint:
- bioaccumulation in aquatic species: fish
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- other:
Reference
Description of key information
Key value for chemical safety assessment
Additional information
In accordance with Section 2 of REACH Annex XI, the bioaccumulation study does not need to be conducted on the grounds that it is technically not feasible as the substance is a pyrophoric gas.
The substance is expected to be reactive in contact with air and water, forming hydrogen and silicic acid/silica or hydrated silicon dioxide. These are naturally occurring substances for which bioaccumulation is not expected to be of concern.
Silicic acid is the bioavailable form of silica that can be absorbed by certain organisms in the environment. Once accumulated into these organisms, silicic acid precipitated as insoluble amorphous silica, plays a structural and defensive role. In animals, silica is a trace nutrient (ECETOC, 2006).
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.
