Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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: 219-154-7 | CAS number: 2374-14-3
Endpoint summary
Administrative data
Description of key information
2,4,6-Trimethyl-2,4,6-tris(3,3,3 -trifluoropropyl)cyclotrisiloxane (F-D3) is susceptible to hydrolysis, with a hydrolysis half-life of greater than 48 hours forming 3,3,3-trifluoropropylmethysilanediol as silanol hydrolysis product.
Therefore, the environmental risk assessment (qualitative only) is based on the properties of the parent substance in accordance with REACH guidance for Chemical Safety Assessment.
The half-lives reported are for the hydrolysis (ring-opening) of the parent substance. The initial product of hydrolysis of F-D3 is 1,5-dihydroxy-1,3,5-trimethyl-1,3,5-tris(3,3,3-trifluoropropyl)trisiloxane (the trimerdiol), which is formed by ring-opening of the parent substance; the half-life for this reaction is 6 days at pH 7 and 25°C. This intermediate hydrolysis product then undergoes further hydrolysis reactions with the final hydrolysis product being 3,3,3-trifluoropropylmethysilanediol. The half-lives reported in Section 5.1.2 are for ring-opening of the parent substance.
3,3,3–Trifluoropropylmethysilanediol is the final product of hydrolysis reactions under the normal range of conditions of pH and temperature. However, other biotic or abiotic reactions may proceed over longer time-scales in the environment.
Additional information
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.
