Registration Dossier
Registration Dossier
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: 200-867-7 | CAS number: 75-38-7
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
VDF is not expected to hydrolyse under normal environmental conditions.
Key value for chemical safety assessment
Additional information
No data on the hydrolysis is available for VDF. However, data on hydrolysis from the structurally similar vinylidene chloride (VDCl) is available from literature. The experimentally derived hydrolysis half-life of VDCl was 1.2E08 years at 25 ºC and pH 7 (Jeffers et al., 1989). As a C-F bond is stronger than a C-Cl bond (e.g. McGivern et al., 2000), it can be expected that the hydrolysis half-life of VDF is even higher than the reported value for VDCl, resulting in a lower hydrolysis rate constant. It is not possible to calculate a hydrolysis rate constant for VDF from the available data. However, the rate constant for VDCl calculated is very small at environmental temperature and pH conditions and homogeneous hydrolysis certainly can be regarded as negligible. The extrapolated half-live is very high and as a result, for practical purposes, the validity of the extrapolation process is beyond question, and extrapolation errors are irrelevant. Therefore, it should be concluded that VDF does not significantly hydrolyse and as a reasonable worst-case assumption the hydrolyis half-life of VDCl can be adopted (see Annex 1 for the Reporting Format).
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.
