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Physical & Chemical properties

Dissociation constant

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Description of key information

Dissociation constant (substance): Not relevant
Dissociation constant (silanol hydrolysis product): ca. 10

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 hydrolyses to form [3 -(2,3 -epoxypropoxy)propyl]silanetriol and methanol. The first dissociation constant of the silanetriol is estimated to be ca. 10, based on read-across from the related substance phenylsilanetriol.