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Diss Factsheets

Physical & Chemical properties

Flammability

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Description of key information

Vanadium carbide nitride is not highly flammable.
Vanadium carbide nitride is not pyrophoric.
Vanadium carbide nitride 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 IX, Section 2, testing of flammability (EU Method A.10 (Flammability of solids)) is not possible for vanadium carbide nitride as the substance is produced and marked in form of briquettes (2-5 cm x 2-5 cm). In addition, long-term industrial experience in handling shows that vanadium carbide nitride is not flammable.

Furthermore, vanadium carbide is not flammable (Regius, 2013) and has a carbon content of 16.65 % whereas vanadium carbide nitride has a lower carbon content of 3.44 %. The nitrogen content is 17.2 % and is considered to be inert. Therefore, vanadium carbide nitride is considered to be non-flammable for scientifically and technical reasons according to Regulation (EC) No 1907/2006, Annex IX, Section 1 & 2.

Pyrophoricity

Testing for pyrophoric properties of solids is not considered to be required since vanadium carbide nitride 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 and based on an industry survey, long-term industrial experience in handling shows that vanadium carbide nitride does not ignite in contact with air (in accordance with Regulation (EC) No 1907/2006, Annex XI, Section 1).

Flammability in contact with water

Testing of flammability in contact with water is not considered to be required, because vanadium carbide nitride 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. Furthermore and based on an industry survey long-term industrial experience in practical handling of vanadium carbide nitride shows that it does not react with water. Recent experimental testing for water solubility has also not reported any formation of gases. Further experimental verification is not considered to be required (in accordance with Regulation (EC) No 1907/2006, Annex XI, Section 1 ).

Justification for classification or non-classification

Vanadium carbide nitride 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 the chemical structure and oxygen content.