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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Water solubility

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Description of key information

Water solubility (substance): Not relevant
Water solubility (silanol hydrolysis product): 1,000,000 mg/L at 20°C

Key value for chemical safety assessment

Additional information

The requirement to test the substance for water solubility is waived becasue in contact with water the substance rapidly hydrolyses to form 3 -chloropropylsilanetriol and hydrogen chloride. A water solubility of 1,000,000 mg/l for the hydrolysis product 3 -chloropropylsilanetriol has been determined using an appropriate QSAR. In practice, the water solubility of the silanol is limited by its tendency to undergo condensation reactions to form siloxanes. A highly cross-linked gel may form. Significant condensation is not expected at concentrations < ca. 200 mg/l.