Ammonium paratungstate (APT), with the CAS number 11120-25-5, is a vital inorganic compound. It typically appears as a white crystalline powder. The chemical formula of ammonium paratungstate is (NH₄)₁₀[H₂W₁₂O₄₂]·4H₂O. It has a high purity level, usually reaching over 99%. The density of APT is approximately 3.1 g/cm³. This compound is soluble in water and ammonia, but insoluble in most organic solvents. The high quality APT we offer is produced through advanced manufacturing processes, ensuring consistent chemical composition and excellent physical properties.
Ammonium paratungstate has a wide range of applications in various industries. In the metallurgical industry, it is a key raw material for the production of tungsten metal and tungsten alloys. Tungsten metal, derived from APT, is known for its high melting point, hardness, and excellent electrical conductivity. It is widely used in the manufacture of filaments for incandescent lamps, electrodes for arc welding, and high - speed cutting tools. In the chemical industry, APT can be used as a catalyst in some chemical reactions, such as oxidation reactions. It can also be used in the production of pigments, dyes, and ceramic materials. Additionally, in the electronics industry, APT is used in the manufacturing of semiconductor devices and electronic components due to its unique electrical properties.
When using ammonium paratungstate, it is necessary to follow certain procedures. In the production of tungsten metal, APT is first reduced to tungsten oxide through a calcination process. The calcination temperature usually ranges from 500°C to 800°C. Then, the tungsten oxide is further reduced to tungsten metal using hydrogen or carbon monoxide as a reducing agent at a higher temperature, typically around 1000°C - 1200°C. In the application as a catalyst, APT is usually supported on a suitable carrier, such as alumina or silica. The loading amount of APT on the carrier needs to be carefully controlled according to the specific reaction requirements. Before use, it is recommended to pre - treat the APT - supported catalyst to activate its catalytic performance.
Case 1: A tool manufacturing company used our high - quality ammonium paratungstate to produce tungsten carbide cutting tools. By strictly controlling the production process, they were able to obtain tungsten carbide with a uniform grain size and high hardness. The cutting tools made from this tungsten carbide showed excellent cutting performance and long service life. They could cut through high - strength steel materials with ease, and the number of tool replacements was significantly reduced, resulting in cost savings for the company.
Case 2: A semiconductor manufacturing company applied APT in the production of semiconductor substrates. The unique electrical properties of APT helped to improve the conductivity and stability of the semiconductor substrates. As a result, the performance of the semiconductor devices was enhanced, with faster data processing speeds and lower power consumption. This led to an increase in the market competitiveness of the company's semiconductor products.
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Este es William, CEO de Zhishang Chemical Co., Ltd.
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