Registration Dossier
Registration Dossier
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EC number: 231-701-1 | CAS number: 7691-02-3
Sediment toxicity
Administrative data
Link to relevant study record(s)
Description of key information
The endpoint is not required.
Key value for chemical safety assessment
Additional information
Long-term sediment toxicity studies have not been conducted for the registered substance. However, they are not required for Annex IX (Phase 2) substances under the REACH Regulation.
The substance hydrolyses very rapidly in water and its hydrolysis products have log Kow values <3 which indicate that partitioning to the sediment compartment is unlikely. In addition, the PNECs for the sediment compartment have been derived from the freshwater using the equilibrium partitioning method for the silanol hydrolysis product, and the RCRs (Risk Characterisation Ratios) indicate that there are no risks for the sediment compartment.
Ammonia does not accumulate in sediment (EA 2007) and the concentrations in sediment resulting from use of the registered substance are minimal compared to the natural background and other anthropogenic sources (see Section 9 of the CSR).
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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