Registration Dossier
Registration Dossier
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EC number: 402-140-1 | CAS number: 17865-32-6 CHMMS; CHMS; DYNASYLAN 9407; Z-6187
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 moderate hydrolysis of the registered substance, the distribution calculation is done for both the parent substance and the hydrolysis products, cyclohexylmethylsilanediol and methanol.
Table: Distribution modelling for STP
|
Cyclohexyldimethoxymethylsilane |
Cyclohexylmethylsilanediol |
Methanol |
Unit |
Fraction of emission directed to water by STP |
58.85 |
98.73 |
12.62 |
[%] |
Fraction of emission directed to air by STP |
37.67 |
1.97E-3 |
0.095 |
[%] |
Fraction of emission directed to sludge by STP |
3.472 |
1.259 |
0.037 |
[%] |
Fraction of the emission degraded in STP |
0 |
0 |
87.23 |
[%] |
Cyclohexyldimethoxymethylsilane is not expected to undergo any significant biodegradation and is predicted to have moderate Henry’s Law constant and high log Kow/log Koc. Therefore, water and air are the main compartments to which it is expected to partition in a sewage treatment plant, with partition to sludge also being significant.
Cyclohexylmethylsilanediol is not expected to undergo any significant biodegradation and is predicted to have low Henry’s Law constant and low log Kow/log Koc. Distribution modelling for STP indicates that 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 cyclohexylmethylsilanediol will partition in the wider environment.
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