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EC number: 257-473-3
CAS number: 51851-37-7
The distribution in a sewage treatment plant (STP) has been estimated
using the SimpleTreat model (implemented in EUSES 2.1.2/Chesar 3.7), see
Due to the moderately rapid hydrolysis of the registration substance to
form [2-(perfluorohexyl)ethyl]silanetriol and ethanol, the distribution
calculation is performed for the parent substance and its hydrolysis
Table: Distribution modelling for STP
[2-(Perfluorohexyl)ethyl]silanetriol (Silanol HP)
Fraction of emission directed to water by STP
Fraction of emission directed to air by STP
Fraction of emission directed to sludge by STP
Fraction of the emission degraded in STP
The registration substance is not expected to undergo any significant
biodegradation and is predicted to have very high Henry’s Law Constant
and has high predicted log Kow/log Koc. Sludge and
air are the main compartments to which it is expected to partition in a
sewage treatment plant, with partition to water also being significant.
The low solubility of the substance in water may affect the distribution
within the sewage treatment plant model in the environmental exposure
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.
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