Registration Dossier
Registration Dossier
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EC number: 223-888-3 | CAS number: 4109-96-0
Endpoint summary
Administrative data
Description of key information
Additional information
Dichlorosilane hydrolyses very rapidly to give silanediol and HCl. Further hydrolysis of the Si-H bonds in silanediol is expected to happen rapidly and produces monosilicic acid, with hydrogen as a by-product. At concentrations above about 100-150 mg/l (measured as SiO2equivalents), condensation products of monosilicic acid can also form. At concentrations >100-150 mg/l of SiO2,monomeric monosilicic acid condenses into colloidal particles of polysilicic acid (silica sol) or a highly cross-linked network (silica gel).
These hydrolysis products are inorganic substances which enter natural biogeochemical cycles. It is not appropriate to calculate Predicted Environmental Concentrations (PECs) for monosilicic acid. Refer to Section 9.0.
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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