Ammonium tungsten oxide is a chemical substance, the following is a detailed explanation about it:
- Basic information of ammonium tungsten oxide
Chinese name of Ammonium tungsten oxide
Ammonium tungsten oxide
Foreign name of Ammonium tungsten oxide
Ammonium Tungsten Oxide
Synonyms of Ammonium tungsten oxide
Ammonium tungsten oxide hydrated, Ammonium tungstate, Ammonium sec-tungstate, Ammonium metatungstate, Ammonium tungstate
Chemical formula of Ammonium tungsten oxide
(NH4)6W12O39-xH2O or W12O41N10H42
Molecular weight of Ammonium tungsten oxide
It varies according to the chemical formula, generally 2938.41 or 3060.46.
CAS No. of Ammonium Tungsten Oxide
There are two different CAS numbers, 12028-48-7 and 11140-77-5, which are due to different chemical forms or purity.
Physical properties of ammonium tungsten oxide
Appearance of ammonium tungsten oxide
White crystalline powder
Solubility of ammonium tungsten oxide
Easily soluble in water, insoluble in alcohol, aqueous solution is weakly acidic.
Third, chemical properties of ammonium tungsten oxide
Ammonium tungsten oxide has some specific chemical properties, such as it can be prepared by different methods, including neutralization method, tungstic acid method, thermal decomposition method, solvent extraction method and ion exchange method.
In industry, ammonium tungsten oxide is widely used in the preparation of tungsten catalysts, which play an important role in petroleum hydrocracking, lubricant hydrotreating, desulfurization, denitrogenation and other processes. In addition, ammonium tungsten oxide is also used in various metal products surface coating, cemented carbide and other fields.
Production method of ammonium tungsten oxide
Production method of ammonium tungsten oxide-neutralization method
Taking ammonium sec-metatungstate and nitric acid as raw materials, ammonium tungsten oxide is prepared through a series of chemical reactions.
Production Method of Ammonium Tungsten Oxide-Tungstic Acid Method
Dissolve tungstic acid with ammonia, and then prepare it by adjusting pH value and heating concentration.
Production Method of Ammonium Tungsten Oxide-Thermal Decomposition Method
Ammonium paratungstate is used as raw material, and it is prepared after thermal decomposition under high temperature.
Production Method of Ammonium Tungsten Oxide-Solvent Extraction Method
Using organic extractant to extract ammonium ion from ammonium tungstate solution, and then prepared by boiling, concentration, crystallization and other steps.
Production Method of Ammonium Tungsten Oxide-Ion Exchange Method
The ammonium ion in ammonium paratungstate is exchanged with other ions through ion exchange resin, and then prepared through a series of treatment.
- Safety Information of Ammonium Tungsten Oxide
Ammonium tungsten oxide needs to pay attention to safety in the process of use, avoid direct contact with skin and wear protective gears.
Waste after use should be disposed of in accordance with relevant laws and regulations.
In conclusion, ammonium tungsten oxide is an important chemical substance, which is widely used in many fields. In the process of use, it is necessary to strictly abide by the safety operation procedures to ensure the safety of personnel and the environment.
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