Name: Tungstic acid

English name: Tungstic acid

Chemical formula: H2WO4

Molecular weight: 249.86

CAS Registry Number: 7783-03-1

EINECS accession number: 231-975-2

Melting point: 100

Boiling point: 1473

Water solubility: soluble in hydrofluoric acid, slowly soluble in caustic alkali solution, insoluble in water and other acids

Density: 5.5

External view: It can exist in multiple states. Yellow powder or crystals, etc.

Flash point: 1473

use

1. Used in mordants, analytical reagents, catalysts, water treatment chemicals, making fireproof and waterproof materials, as well as phosphotungstate and borotungstate.

2. Used to make metal tungsten, tungstic acid, tungstate, etc.

3. Used in mordant, pigment, dye, ink.

4. The textile industry is used as a fabric weighting agent. This product is used as a fabric auxiliary. A mixture of tungstic acid, ammonium sulfate and ammonium phosphate, etc. is used for fiber fire prevention and waterproofing. This fiber can be made into fire-resistant rayon and rayon. It can also be used for leather tanning.

5. Used for anticorrosion of electroplating coating.

6. It can be used as a co-solvent to introduce enamel colors to lower the firing temperature and complement the color.

7. Used in the manufacture of petroleum industry and aviation and aerospace materials.