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Dissociation constant

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dissociation constant
Type of information:
experimental study
Adequacy of study:
supporting study
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Principles of method if other than guideline:
Titration method (no further details available)
GLP compliance:
not specified
Dissociating properties:
A dissociation constant of 11.9 is reported in secondary literature for a silanediol, which is the hydrolysis product of the submission substance. The original reference was not available for review and no further information is available. The reliability of this result is not assignable.

Description of key information

parent substance: not relevant
silanol hydrolysis product (dimethylsilanediol): pKa 11.9

Key value for chemical safety assessment

Additional information

There are no groups present in the molecule that are expected to ionize within an environmentally relevant range.

In contact with water the substance rapidly hydrolyses to form dimethylsilanediol.

Measured data for dimethylsilandiol is reported in a secondary literature, first dissociation constant of pKa 11.9.