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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 234-196-6 | CAS number: 10591-84-1
Endpoint summary
Administrative data
Description of key information
Additional information
Degradation:
The substance is not readily biodegradable.
Abiotic degradation could not be demostrated as the substance has a extremely low water solubility <10 ng/L. Based on structure, hydrolysis is however expected.
Bioaccumulation:
The logKow of 4.7 indicates a certain potential for bioaccumulation, which is described by the calculated BCF of 586. This model prediction is justified and validated by an experimental study performed with a similar structure.
Adsorption/desorption:
The logKoc of 4.6 indicates a strong affinity to particles.
Degradation in actual use:
The substance is used as an accelerator used in rubber industry. The first step during the curing process is the symmetrical cleavage of the substance in 2 radicals:
R2 N-CS-S-S-CS-NR2 --> 2 R2N-CS-S*
This radical is able to react with aliphatic chains contained in the rubber matrix.(e.g. isobutylene groups). The radicals are reactive species which are added to double bonds. Thus, the substance is consumed during the vulcanisation step. As isobutylene groups are available in great excess it is most likely that practically no unreacted substance is still present in rubber after vulcanisation (Source: Hofmann 1965).
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.
