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EC number: 252-161-3
CAS number: 34708-08-2
Testing is waived on the basis
that the chemical safety assessment according to Annex I indicates that
it is not necessary to conduct the simulation test on ultimate
degradation in surface water and the sediment simulation test, or to
identify degradation products.
Simulation tests (water and
sediments) are not considered necessary because:
· The substance hydrolyses
moderately and the silanol hydrolysis product has a low log Kow
value and, therefore, exposure of the sediment compartment is expected
to be low.
· The risk characterisation
ratios (RCRs) for the aquatic and sediment compartments, based on the
assumption that the substance and silanol hydrolysis product are not
biodegradable are <1.
· The non-silanol
hydrolysis product, ethanol, is readily biodegradable.
PFA (2021): Background to
persistence assessment of organosilicon compounds, Reference:
PFA.923.001.001, February 2021.
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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