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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 231-132-9 | CAS number: 7440-23-5
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
Sodium is a hydrolytically unstable substance and on contact with moisture it becomes sodium hydroxide and hydrogen. Sodium is WATER-REACTIVE (EMITTING FLAMMABLE GASES)
Key value for chemical safety assessment
- Flammability:
- contact with water liberates highly flammable gases
Additional information
- According to US department on Transportation (2004), sodium is WATER-REACTIVE (EMITTING FLAMMABLE GASES)/ Fire or Explosion: Produce flammable gases on contact with water. May ignite on contact with water or moist air.
- According to EU classification (67/548/EEC) sodium is classified F: Flammable; R14/15: reacts violently with water, liberating extremely flammable gases
- According to CLP classification (1272/2008/CEE), sodium is classified Water React. 1: substance which in contact with water emits flammable gases; H260: in contact with water releases flammable gases which may ignite spontaneously gases which may ignite spontaneously
Flammability in contact with water: sodium is hydrolytically unstable and in contact with moisture, it becomes sodium hydroxide and hydrogen. Hydrogen has explosive properties.
Justification for classification or non-classification
Sodium is listed on Annex VI of regulation n°1272/2008 of 16 December 2008 with R14/15 (F) and H260 (water react. 1) classification (" Reacts violently with water, liberating extremely flammable gases").
No change to this classification is proposed.
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.
