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Physical & Chemical properties


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flammable solids
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Description of key information

According to the ECHA Guidance on information requirements and chemical safety assessment Chapter R.7a.: Endpoint specific guidance May 2008, inorganic oxides in which the inorganic element is in its highest possible oxidation state are incapable of further reaction with oxygen and can thus be designated as non-flammable. The highest oxidation state of tungsten is VI and the oxidation state of the majority of tungsten in this compound is VI. Thus, the substance can be considered non-flammable.

Key value for chemical safety assessment

not classified

Additional information

Justification for classification or non-classification

Tungsten in tungsten blue oxide its in highest possible oxidation state and incapable of further reaction with oxygen. Thus, tungsten blue oxide can be considered non-flammable and non-pyrophoric.