Registration Dossier
Registration Dossier
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EC number: 915-673-4 | CAS number: 211519-85-6
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), see table below. Due to the moderate to slow rate of hydrolysis of the parent substance, the distribution calculation is done for the registration substance and its silanol hydrolysis product.
Table. Distribution modelling for STP
|
Bis[3-(triethoxysilyl)propyl]polysulfides, CAS 211519-85-6; EC No. 915-673-4 |
Bis[3-(trihydroxysilyl)propyl]polysulfides |
|
Fraction of emission directed to water by STP |
4.608 |
100 |
[%] |
Fraction of emission directed to air by STP |
85.59 |
8.79E-9 |
[%] |
Fraction of emission directed to sludge by STP |
9.801 |
7.51E-6 |
[%] |
Fraction of the emission degraded in STP |
0 |
0 |
[%] |
Bis[3-(triethoxysilyl)propyl]polysulfides hydrolyses at a moderate to slow rate in contact with water to form ethanol and bis[3-(trihydroxysilyl)propyl]polysulfides. The constituents are not expected to undergo any significant biodegradation and are predicted to have very high Henry’s Law constant and high log Kow/log Koc. Therefore, air is the main compartment to which it is expected to partition in a sewage treatment plant.
For the silanol hydrolysis products, they are predicted to have very low Henry's Law constant, low log Kow/log Koc. Therefore, water is the main compartment to which the silanol hydrolysis products are expected to partition in a sewage treatment plant.
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