Ammonium-Tungstate-AMT-APT-difference
Difference between ammonium tungstate, ammonium paratungstate and ammonium metatungstate:
| Chinese Name | 鎢酸銨 | 偏鎢酸銨 | 仲鎢酸銨 |
| 英文名稱 | Ammonium Tungstate | Ammonium Metatungstate | Ammonium Paratungstate |
| Formula | (NH4)10W12O41~xH2O | (NH4)6H2W12O40.XH2O | 5(NH4)2-12WO3-5H2O |
| Appearance | Colorless Orthorhombic Crystal | White or Slightly Yellow Crystalline Powder | White Crystal |
| CAS Number | 13472-45-2 | 14311-52-5 | 11120-25-5 |
| Solubility (Water) | Slightly Soluble | Easily Soluble, 303.99/100g(20℃) | Slightly Soluble |
Ammonium tungstate, ammonium metatungstate and ammonium paratungstate are important intermediates of tungsten metallurgical industry. The figures below are ammonium tungstate, ammonium paratungstate, ammonium metatungstate from left to right.
Related Products:
Purple tungsten oxide phase composition of WO2.72 (or W18O49), which is one of tungsten oxide, abbreviated VTO, is a purple crushed crystalline powder, the color generally purple or blue purple.
Sodium tungstate is mainly used for the preparation of ammonium paratungstate and the depth of preparation of tungsten trioxide, cemented carbide, tungsten, ammonium tungstate, tungstic acid and other tungsten compounds used in petrochemicals, inks and so on.
Ammonium paratungstate is a chemical substance, mainly white crystals, there are two kinds of tablets or acupuncture for the manufacture of tungsten trioxide or blue tungsten oxide metal tungsten powder.
Tungstic acid refers to hydrated forms of tungsten trioxide, WO3. The simplest form, the monohydrate, is WO3.H2O, the dihydrate WO3.2H2O is also known. The solid state structure of WO3. H2O consists of layers of octahedrally coordinated WO5(H2O) units where 4 vertices are shared.
0.6um yellow tungsten oxide, an oxide of tungsten, the appearance of a positive yellow powder, stable at room temperature, the apparent density of 0.6-1.0g / cm3.
Blue Tungsten Oxide refers to a class of dark blue compounds containing a mixed valence state of tungsten (VI) and tungsten (V). The appearance is dark blue powder.