Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

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






Release directed to water




Release directed to air 




Release directed to sludge 




Release degraded 




[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.