Registration Dossier
Registration Dossier
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EC number: 238-883-1 | CAS number: 14814-09-6
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/Chesar 3.5), see table below. Due to the moderately rapid hydrolysis of the registered substance, the distribution calculation is done for both the parent substance and the hydrolysis products, 3-(trihydroxysilyl)propanethiol and ethanol.
Table: Distribution modelling for STP
|
3-(Triethoxysilyl)propanethiol |
3-(Trihydroxysilyl)propanethiol |
Ethanol |
Unit |
Fraction of emission directed to water by STP |
92.71 |
99.97 |
12.62 |
[%] |
Fraction of emission directed to air by STP |
6.97 |
1.62E-8 |
0.075 |
[%] |
Fraction of emission directed to sludge by STP |
0.316 |
0.025 |
0.069 |
[%] |
Fraction of the emission degraded in STP |
0 |
0 |
87.23 |
[%] |
3-(Triethoxysilyl)propanethiol is not expected to undergo any significant biodegradation and is predicted to have 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.
3-(Trihydroxysilyl)propanethiol is predicted to have very low Henry's Law constant, low log Kow/log Koc. Therefore, water is the main compartment to which it is expected to partition in a sewage treatment plant. Water is also likely to be the main compartment to which 3-(trihydroxysilyl)propanethiol will partition in the wider environment.
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