Violet Tungsten Oxide Composition
Chemical Formula: WO2.72（or W18O49）
Appearance: Purple Crystalline Powder
Apparent Density:1.75g/ cm3
Application:Mainly used to produce tungsten powder.
Violet Tungsten Oxide Composition
| Purity （%） | 99.5 | |
| Impurities Max（%） |
Sn | 0.5 |
| S | 0.5 | |
| Cu | 0.1 | |
| Mo | 10 | |
| Bi | 0.5 | |
| As | 5 | |
| P | 5 | |
| Si | 5 | |
| Ca | 5 | |
| Mn | 1 | |
| Pb | 0.5 | |
| Fe | 5 | |
| Ti | 2 | |
| Mg | 2 | |
| Na | 4 | |
| K | 6 | |
| Cr | 2 | |
| V | 2 | |
| Co | 2 | |
| Ni | 2 | |
| Al | 2 | |
| Cd | 0.5 | |
Related Products:
Ammonium paratungstate (APT) is white crystalline powder, insoluble in water.
Ammonium metatungstate is white powder, soluble in water, solubility is 300g WO3/100ml H2O (in 25℃).
Sodium tungstate is an intermediate tungstate produced from tungsten concentrate, is the raw material for APT.