Registration Dossier
Registration Dossier
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EC number: 225-805-6 | CAS number: 5089-70-3
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 3.7), 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-chloropropyl)silanetriol and ethanol.
Table: Distribution modelling for STP
|
(3-Chloropropyl)triethoxysilane |
(3-Chloropropyl)silanetriol |
Ethanol |
Unit |
Fraction of emission directed to water by STP |
63.37 |
99.96 |
12.62 |
[%] |
Fraction of emission directed to air by STP |
31.79 |
1.57E-7 |
0.075 |
[%] |
Fraction of emission directed to sludge by STP |
4.828 |
0.035 |
0.069 |
[%] |
Fraction of the emission degraded in STP |
0 |
0 |
87.23 |
[%] |
(3-Chloropropyl)triethoxysilane is not expected to undergo any significant biodegradation and is predicted to have moderate Henry’s Law constant. Therefore, water and air are the main compartment to which it is expected to partition in a sewage treatment plant.
(3-Chloropropyl)silanetriol 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-chloropropyl)silanetriol will partition in the wider environment.
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