Registration Dossier
Registration Dossier
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EC number: 233-054-0 | CAS number: 10026-04-7
Endpoint summary
Administrative data
Description of key information
Abiotic degradation
Silicon tetrachloride is expected to hydrolyse very rapidly under environmentally-relevant conditions. Other abiotic degradation processes are expected to be insignificant by comparison with rapid hydrolysis.
The hydrolysis products are expected to be silicic acid and hydrogen chloride.
Biotic degradation
Silicon tetrachloride is expected to hydrolyse very rapidly to hydrogen chloride and silicic acid, which are inorganic substances and so biodegradation is not relevant.
The chemical safety assessment indicates that it is not necessary to obtain further information on biodegradation via simulation tests in water, sediment or soil.
Table 4.2: Degradation rates
Degradation rate in water: |
Rapid hydrolysis is expected for silicon tetrachloride. Silicic acid is inorganic and as such biodegradation is not relevant. |
Degradation rate in sediment: |
Silicic acid is inorganic and as such biodegradation is not relevant. |
Degradation rate in soil: |
Silicic acid is inorganic and as such biodegradation is not relevant. |
Degradation rate in air: |
Reaction with water vapour, rather than photolysis, is expected to be the primary degradation process of silicon tetrachloride in air. |
Additional information
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