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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 202-852-0 | CAS number: 100-43-6
Stability: thermal, sunlight, metals
Administrative data
Link to relevant study record(s)
Description of key information
Without a polymerisation inhibitor present, liquid 4VP can autopolymerize, with potential self-heating, pressure rise and rupture of containers.
Additional information
Commercial 4-Vinylpyridine is stabilised by the addition of a polymerisation inhibitor, such as tert-butylcatechol (1000 ppm). 4VP can undergo a self-accelerating polymerisation reaction to form poly-vinylpyridine when heated in a closed container, when water is absorbed, or when impurities are introduced to consume the stabiliser. This reaction is exothermic and can cause a significant increase in heat and pressure, which can result in splitting of the container with consequences including fire.
Justification for classification or non-classification
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.
