Registration Dossier

Environmental fate & pathways

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 3.4), see table below. Due to the rapid hydrolysis of the registered substance, the distribution calculation is done for the hydrolysis products, [3-(2,3-epoxypropoxy)propyl]silanetriol and methanol.

Table: Distribution modelling for STP

 

[3-(2,3-epoxypropoxy)propyl]silanetriol

 

Methanol

 

Release directed to water

99.99

12.62 

[%] 

Release directed to air 

3.97E-9

 0.095

[%] 

Release directed to sludge 

 6.27E-3

 0.037

[%] 

Release degraded 

 0

 87.24

[%] 

[3-(2,3-Epoxypropoxy)propyl]silanetriol 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 [3-(2,3-epoxypropoxy)propyl]silanetriol will partition in the wider environment.