|
Name |
Tungstic acid |
|
Other name |
Wolframic Acid |
|
Chemical formula |
H2WO4 |
|
Molecular weigh |
249.86 |
|
CAS Registry Number |
7783-03-1 |
|
EINECS accession number |
231-975-2 |
|
Melting poin |
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. |