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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.