Registration Dossier
Registration Dossier
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EC number: 223-888-3 | CAS number: 4109-96-0
Biodegradation in soil
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
Testing is waived on the basis that the chemical safety assessment according to Annex I indicates that it is not necessary to conduct the simulation test on ultimate degradation in surface water and the sediment simulation test, or to identify degradation products.
Simulation tests (soil) are not considered necessary because the substance is expected to hydrolyse very rapidly to form hydrogen chloride and silanediol. With further reaction of the Si-H bonds in silanediol, monosilicic acid and hydrogen are formed. Monomeric silanediol and monosilicic acid exist only in dilute aqueous solutions and readily condense at concentrations above approximately 100 -150 mg/l as SiO2 to give a dynamic equilibrium between monomer, oligomers and insoluble amorphous polysilicic acid. Monosilicic acid is a naturally occurring substance, which will enter the natural biogeochemical cycle for silicon; simulation tests (soil) are not relevant.
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.
