Registration Dossier
Registration Dossier
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EC number: 234-841-1 | CAS number: 12036-21-4
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
Vanadium dioxide is not considered as highly flammable.
Vanadium dioxide is not pyrophoric.
Vanadium dioxide does not emit flammable gases in contact with water.
Key value for chemical safety assessment
- Flammability:
- non flammable
Additional information
Flammability of solids
In accordance with Regulation (EC) No 1907/2006, Annex XI, Section 1, testing of flammability is not considered to be required for vanadium dioxide as this is a form of vanadium that is already oxidized and has an oxygen content of 39 %. Furthermore, long-term industrial experience in handling shows that the substance is not flammable. This substance is considered non-flammable.
Pyrophoricity
In accordance with Regulation (EC) No 1907/2006 Annex XI, Section 1, testing for pyrophoric properties of solids is not considered to be required, since vanadium dioxide is stable at ambient temperature. It also does not contain any chemical groups that might lead to spontaneous ignition a short time after coming in contact with air at room temperature (ca. 20 °C). Furthermore, long-term industrial experience in handling shows thatvanadium dioxide does not ignite (spontaneously) (i.e. the autoignition temperature is not below room temperature) in contact with air.
Flammability in contact with water
In accordance with Regulation (EC) No 1907/2006, Annex XI, Section 1, testing of flammability in contact with water is not considered to be required, because vanadium dioxide does not contain groups that might lead to a reaction with water or damp air, leading to the development of dangerous amounts of gas or gases which may be highly flammable. Recent experimental testing for water solubility has also not reported any formation of gases. Furthermore, long-term industrial experience in practical handling of vanadium dioxide shows that it does not react with water and will not ignite with water or humid air.
Justification for classification or non-classification
Vanadium dioxide does not need to be classified for physico-chemical properties according to Directive 67/548 EEC and CLP Regulation (EC) No 1272/2008:
- flammability is considered non-relevant based on chemical structure and lack of functional groups;
- explosive properties are considered non-relevant based on lack of functional groups;
- oxidising properties are considered non-relevant based on testing with a vanadium substance that contains a higher oxygen content (i.e. V2O5 with an oxygen content of 44 % vs. VO2 with an oxygen content of 38 %). The result indicates that V2O5 does not have any oxidising potential. In conclusion, VO2 does not have any oxidising potential, too.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.
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