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EC number: 236-704-1
CAS number: 13465-77-5
No measured data are available for
Hexachlorodisilane contains no
chromophores that would absorb visible or UV radiation, so direct
photolysis is not likely to be significant. Hexachlorodisilane
hydrolyses very rapidly to hexahydroxydisilane and HCl. Therefore,
reaction with water vapour, rather than photolysis, is expected to be
the primary degradation process in air. The Si-Si bonds may also react
to produce monosilicic acid. At concentrations above about 100-150 mg/l
(measured as SiO2 equivalents), condensation products of
monosilicic acid ((poly)silicic acid) and hexahydroxydisilane can form.
These hydrolysis products are
inorganic substances which enter natural biogeochemical cycles.
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