Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 220-449-8
CAS number: 2768-02-7
No terrestrial toxicity data
are available with the registered substance.
In accordance with Column 2
of REACH Annex IX, there is no need to further investigate the effects
of this substance in long-term terrestrial toxicity studies because, as
indicated in guidance R.7.11.6 (ECHA 2016), the quantitative chemical
safety assessment (conducted according to Annex I of REACH) indicates
that the Risk Characterisation Ratio is well below 1, and therefore the
risk is already adequately controlled and further testing is not
The silanol hydrolysis
product, vinylsilanetriol, upon which the chemical safety assessment is
based, is highly water soluble and has a low log Kow value
and therefore, exposure of the soil compartment is expected to be low.
The substance is not
adsorbing (based on log Koc -0.02), has low bioavailability
(based on log Kow <3 (-2.0)) and low toxicity was observed in
short- and long-term aquatic tests. Therefore, the occurrence of more
severe toxic effects in the terrestrial compartment that were not
expressed in the aquatic studies would be considered unlikely.
The PNEC calculated by the
Equilibrium Partitioning Method has been determined for the purpose of
deriving a chemical safety assessment and the risk characterisation
ratios are below 1.
Overall it is concluded that
the risk characterisation conclusion is sufficiently conservative in
respect of any uncertainties and therefore further testing is not
Details on how the PNEC and
the risk characterisation ratio have been derived can be found in IUCLID
Section 6.0 and Chapters 9 and 10 of the Chemical Safety Report,
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
Welcome to the ECHA website. This site is not fully supported in Internet Explorer 7 (and earlier versions). Please upgrade your Internet Explorer to a newer version.
Do not show this message again