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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 289-339-5 | CAS number: 87741-01-3
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
Flammability data were read across from substances with compatible structure to those in Category C4, high 1,3 -butadiene (≥ 0.1%): But-1-ene (106-9 -9), 2-methylpropene (115-11-7) and 1,3 butadiene. The lower and upper explosion limits ranged from 1.6-12%.
Key value for chemical safety assessment
- Flammability:
- extremely flammable
Additional information
Measured data on the flammability of the members of category C4, high 1,3 -butadiene (≥ 0.1%) were not available. Therefore read across from handbook data (CRC 2008) from comparable substances [2-methylpropene: gas LEL 1.8 % - UEL 9.6 %, 1,3–butadiene: gas LEL 2.0 % - UEL 12 %, but-1–ene: gas UEL 1.6 % to UEL10 %] was deemed appropriate as they have a similar structure to the category members and so physico-chemical properties are predicted to be similar. No information on the method used was reported in the handbook. However, this information is taken from the CRC handbook (2008) which is a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint. The lower and upper explosion limits are 1.6 - 12 %.
Based on the explosion limits for the category members (1.6 to 12 %), all category members are classified as Flammable gas category 1.
Justification for classification or non-classification
The lower and upper explosion limits are 1.6 - 12%.The data would result in a classification of category 1 flammable gas and the hazard statement 'extremely flammable gas'.
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.
