Registration Dossier
Registration Dossier
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EC number: 250-807-9 | CAS number: 31795-24-1
Endpoint summary
Administrative data
Description of key information
Additional information
The distribution in a sewage treatment plant (STP) has been estimated using the SimpleTreat model (implemented in EUSES 2.1.2), see following table.The substance is a salt that is only stable in aqueous solution at high pH (>12).). In solution at pH 9 or below and at low concentration (conditions relevant for the environment), methylsilanetriol will predominate.Due to the complete dissociation of the registration substance, the distribution calculation is done for methylsilanetriol.
Table. Distribution modelling for STP
Fraction of emission directed to air by STP |
4.5E-06 |
[%] |
|||
Fraction of emission directed to water by STP |
100 |
[%] |
|||
Fraction of emission directed to sludge by STP |
0.0074 |
[%] |
|||
Fraction of the emission degraded in STP |
0 |
[%] |
Methylsilanetriol is not expected to undergo any significant biodegradation, has low Henry’s Law constant and low log Kow/log Koc. Therefore water is the main compartment to which it is expected to partition in a sewage treatment plant.
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