Metal oxides

  • image for Vanadium Pentoxide (V2O5) pigment stain

What is the use of vanadium pentoxide? Which preservatives are detected by vanadium pentoxide test? Is vanadium pentoxide toxic? Is vanadium pentoxide Coloured


Vanadium(V) oxide (vanadia) is the inorganic compound with the formula V2O5. Commonly known as vanadium pentoxide, it is a brown/yellow solid, although when freshly precipitated from an aqueous solution, its colour is deep orange. Because of its high oxidation state, it is both an amphoteric oxide and an oxidizing agent. From the industrial perspective, it is the most important compound of vanadium, being the principal precursor to alloys of vanadium and is a widely used industrial catalyst. 

The mineral form of this compound, shcherbinaite, is extremely rare, almost always found among fumaroles. A mineral trihydrate, V2O5·3H2O, is also known under the name navajoite.

All pigments for ceramics are intermixable so why not get creative and experiment by missing your own completely fresh color. During the firing process, the colors fuse extra vigorously creating purity, intensity, and brilliance. The colors are stronger, therefore, significantly less percentage is needed to create vivid colors making them excessively cost-effective.

How to use Vanadium Pentoxide in the pottery

An acidic metallic oxide that produces yellow coloration amounts to 10%. Its color is generally weak but can be strengthened when fritted with tin and zirconia. Although yellows can be prepared with antimony, vanadium is stable at higher temperatures. The most vibrant color is obtained in transparent glazes. Also a strong flux.

Colorant used to produce yellow, greenish-yellow, reddish-brown. Excess (more than can be dissolved in the glaze) can cause irregular surfaces. Slightly soluble. Acts as a flux; reduces surface tension.

When using ceramic pigments in glazes, usually in concentrations of 1–10%, a little more care must be taken because some pigment systems react with materials in a glaze.

Formula: V2O5
Molecular Weight: 181.88 g/mol
Form: Yellow solid powder
CAS Number: 1314-62-1
Density: 3.36 g/cm³
Synonyms: VANADIUM PENTOXIDE, Vanadium(V) oxide, Divanadium pentaoxide, Divanadium pentoxide, dioxovanadiooxy(dioxo)vanadium, V2O5, Vanadic anhydride, Vandia, 

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Vanadium pentoxide appears as a yellow to red crystalline powder

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