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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 because in contact with water the substance rapidly hydrolyses to ethylsilanetriol and hydrogen chloride. The water solubility of the silanol hydrolysis product has been calculated using an appropriate predictive method; the silanol is predicted to be very water soluble. However, ethylsilanetriol may undergo condensation reactions to give siloxane dimers, oligomers and polymers; this will limit its solubility in practise.