Tungsten Oxide

  What is Nano Tungstic Acid? Nano tungstic acid usually refers to nano yellow tungstic acid, an amorphous yellow powder. The properties of tungstic acid in water and acidic solutions are relatively stable, almost insoluble in water, soluble in alkali, slightly soluble in acid, but can react with water. And exist in a certain colloidal form. When tungstic acid is heated to 100°C, it loses a molecule of water and turns into tungsten trioxide. It is almost insoluble in acid, slightly soluble in hot water, and exhibits stable properties at temperatures below 150°C; In strong alkaline solutions, ammonia and hydrofluoric acid. Chemical formula of nano tungstic acid: H2WO4 or WO3·H2O Physical Properties Of Nano Tungstic Acid: Appearance color: light orange-yellow powder, insoluble in water. Purity: ≥99.9% Average particle size: 30~50nm Melting point: 1473℃ Nano Tungstic Acid Application: Due to its unique properties, tungstic acid was used as the most...

What is Nano Yellow Tungsten Oxide? Yellow tungsten oxide (WO3, Nano Yellow Tungsten Oxide) is an oxide of tungsten with a yellow powder appearance. Two different particles of yellow tungsten oxide are different in size and show different colors. When the crystal size is about 1.5um, it appears yellow; when the crystal size is about 15um, it appears green. Although the appearance is different, the characteristics are similar. Physical Properties Of Nano Yellow Tungsten Oxide: Physical properties: yellow or bright green, finely divided yellow crystal powder, loose specific gravity 2.3~2.8g/cm3. Appearance and characteristics: yellow powder, stable at room temperature, the product passes through 80 mesh screen. Nano Yellow Tungsten Oxide Application: 1. As an important intermediate in tungsten metallurgy industry, yellow tungsten oxide is widely used in metal tungsten powder and tungsten carbide powder, and then used in the production of metal tungsten product...

  What Is Tungsten Hexachloride? Tungsten hexachloride is a compound of tungsten and chlorine, the English name is tungsten hexachloride, the chemical formula is WCl6, and the molecular weight is 396.61. Under normal circumstances, the content of tungsten is not less than 46%, and the content of chlorine is not less than 53%. Physical and Chemical Properties of Tungsten Hexachloride: Appearance is dark blue or blue-purple fine-crystalline powder, easily soluble in carbon disulfide, soluble in ether, ethanol, benzene, carbon tetrachloride, easily decomposed by hot water, and oxidized by oxygen in the air to form tungsten oxychloride or tungsten oxychloride when heated. Tungsten oxide, and WCl6 containing tungsten oxychloride is easily decomposed by water vapor, and is reduced by hydrogen under high temperature conditions to precipitate tungsten powder. Production Process of Tungsten Hexachloride: 1) Pretreatment of raw materials. The large particle tungste...

What is Sodium Tungstate? Sodium tungstate is a tungstate of sodium, chemical formula is Na2WO4•2H2O which is prepared from tungsten ores used to manufacture tungsten by reducing. Application of Sodium Tungstate It is mainly used as production of tungsten oxides. It is also used as catalyst for epoxidation of alkenes and oxidation of alcohols into aldehydes or ketones.It is also used for treatment of diabetes in animal, in the dye and textile industry,intermediate in preparation of tungsten compounds, fire proofing fabrics & cellulose, alkaloid precipitant. More details please visit: http://sodium-tungstate.com/english/index.html Basic Trading Condition Product Name Sodium Tungstate Details WO3 Content: 69%min Quantity:1,000.00KG Price:29.00 USD/KG EXW, XIAMEN, CHINA Payment:T/T in advance Deliv...