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Physical & Chemical properties

Dissociation constant

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Description of key information

Dissociation constant (silanol hydrolysis product): ca. 11-12

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 dimethylsilanol and hydrogen chloride. The dissociation constant of one of the silanol hydrolysis products, dimethylsilanediol, is estimated as 11 - 12.