The physical and chemical properties of ammonium tungsten oxide may vary depending on factors such as preparation process, purity and testing conditions. Therefore, in practical application, suitable product specifications and testing methods should be selected according to specific needs. Meanwhile, safety operation procedures should be strictly observed during the use to ensure the safety of personnel and environment. The main physical and chemical properties of ammonium tungsten oxide are summarized below.
Physical properties of ammonium tungsten oxide
Appearance and form of ammonium tungsten oxide
Ammonium tungsten oxide is white crystalline powder. This property makes it easy to recognize visually and is suitable for occasions where a white powdery material is required.
Solubility of Ammonium Tungsten Oxide
Ammonium tungsten oxide is soluble in water but insoluble in alcohols. This difference in solubility is of great significance during preparation and use, for example, this property can be easily utilized when it is necessary to dissolve it in water for a reaction or treatment.
Melting point and density of ammonium tungsten oxide
The melting point is about 100°C (decomposition) (literature data), and the density is about 4 at 20°C (no specific units are available, but the usual units of density are g/cm³ or g/mL, which may refer here to the relative density or an approximation). These physical parameters are essential to understanding its behavior at different temperatures and conditions.
Other physical properties of ammonium tungsten oxide
Specific data such as refractive index, flash point, specific spin, etc. are not given in the available literature, but some of the physical properties it may have can be inferred from its crystal structure and chemical composition.
Chemical Properties of Ammonium Tungsten Oxide
Properties of aqueous solution of ammonium tungsten oxide
The aqueous solution of ammonium tungsten oxide is weakly acidic. This property indicates that it can partially ionize hydrogen ions in aqueous solution and thus has a certain acidity.
Stability of ammonium tungsten oxide
Under normal temperature and pressure, ammonium tungsten oxide is relatively stable, but light, open flame and high temperature should be avoided, which may cause its decomposition or deterioration.
Reactivity of ammonium tungsten oxide
Due to the presence of reactive groups such as tungsten, oxygen and ammonium ions, ammonium tungsten oxide may react with other chemicals. For example, it can react with acid or alkali to form corresponding salts or other compounds.
Uses of Ammonium Tungsten Oxide
Based on its unique chemical properties, ammonium tungsten oxide is widely used in the preparation of tungsten catalysts, which play an important role in industrial processes such as petroleum hydrocracking, lubricant hydrotreating, desulfurization, and denitrogenation. In addition, it is also used in such fields as surface coating of various metal products and preparation of cemented carbide.
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