Potassium Metavanadate is a water-soluble inorganic salt used primarily in chemical synthesis, corrosion inhibition, and as a precursor for vanadium-based catalysts. It is the potassium analogue of Sodium Metavanadate and is preferred where potassium as a counter-ion is required for solubility or reaction performance.
| CAS Number | 13769-43-2 |
| Chemical Formula | KVO3 |
| Molecular Weight | 138.04 g/mol |
| Appearance | White to slightly yellowish crystalline powder or granules |
| Melting Point | 520 °C |
| Purity | ≥ 98.0% or ≥ 99.0% |
| Solubility |
Soluble in water (≈ 11.6 g/100 mL at 25 °C); insoluble in alcohol |
| Safety Information |
Toxic (GHS06). Harmful if swallowed or inhaled. Causes serious eye and skin irritation. Suspected of damaging fertility. |
| Packing |
Laboratory packs: 100 g, 500 g, 1 Kg plastic or glass bottles Industrial packs: 25 Kg fiber drums or moisture-proof bags with PE liners |
| Synonyms |
Potassium Vanadate (V), Metavanadic acid potassium salt |
| Uses |
Widely used as a corrosion inhibitor in hydrogen plants, as a mordant in textile dyeing (especially aniline black), as a catalyst in organic synthesis, and in the production of specialty glass and ceramic materials. |
