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EC number: 220-449-8
CAS number: 2768-02-7
[trimethoxy(vinyl)silane]: Not relevant due to very rapid hydrolysis in
contact with water
[vinylsilanetriol]: ca. 10
requirement to test the substance for dissociation constant is waived
because in contact with water the substance hydrolyses very rapidly. The
hydrolysis products in this case are vinylsilanetriol and methanol.
are no reliable measured data for the dissociation constant of
vinylsilanetriol. The typical dissociation constants for the hydroxyl
protons of silanetriols are available from studies in other
is appropriate to read-across dissociation constant data for
vinylsilanetriol from phenylsilanetriol. This suggests that silanols are
not expected to undergo significant dissociation within the range of pH
relevant in the environment or in vivo.
has a measured first dissociation constant ca.10 in a reliable study
using a relevant test method.
Additional information is given in a supporting report (PFA 2013b)
attached in Section 13.
PFA (2013b). Peter Fisk
Associates, Dissociation constant Analogue report, PFA.300.001.001
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