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Dissociation constant

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Description of key information

Dissociation constant (substance): Not relevant
Dissociation constant (silanol hydrolysis product): 9.6

Key value for chemical safety assessment

Additional information

The requirement to test the substance for dissociation constant is waived because in contact with water the substance rapidly hydrolyses to form vinylsilanetriol and hydrogen chloride. A first dissociation constant of 9.6 was determined in a reliable study conducted in compliance with GLP. The second and third dissociation constants were estimated to be >11.