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EC number: 242-056-0
CAS number: 18171-19-2
[3-chloropropyl(dimethoxy)methylsilane]: Not relevant due to rapid
hydrolysis in water
[(3-chloropropyl)(methyl)silanediol]: approximately 12
requirement to test the substance for dissociation constant is waived
because in contact with water the substance hydrolyses rapidly. The
hydrolysis products in this case are 3-chloropropyl(methyl)silanediol
are no reliable measured data for the dissociation constant of
3-chloropropyl(methyl)silanediol. The typical dissociation constants for
the hydroxyl protons of silanediols are available from studies in other
silanediols. It is appropriate to read-across dissociation constant data
for 3-chloropropyl(methyl)silanediol from dimethylsilanediol. This
suggests that silanols are not expected to undergo significant
dissociation within the range of pH relevant in the environment or in
is reported in a secondary source to have a first dissociation constant
of 11.9. Additional information is given in a supporting report (PFA
2013b) attached in Section 13.
Fisk Associates, Dissociation constant Analogue report. PFA.300.001.001.
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