Ammonium metatungstate (AMT) is a white or slightly yellow crystalline powder. It is an important tungsten compound and can be used to prepare tungsten oxide, tungsten powder and other tungsten products, or to manufacture various petrochemical catalysts. The main raw material of the base catalyst. Unless otherwise specified, the solubility of ammonium metatungstate refers to the solubility of ammonium metatungstate in water. AMT has good water solubility. The solubility in water at 20°C is 303.99/100g, and the aqueous solution is quite stable and the solution is acidic. As the temperature increases, the solubility of ammonium metatungstate in water will increase until it reaches the maximum solubility, that is, the saturated state. Metatungstic acid and most of its salts are well soluble in water. The advantage of ammonium metatungstate is that it has a very high solubility in water, so it can be directly used and prepared with high concentration of tungsten without alkali metal ions. Salt solution.
Solubility refers to the degree to which a substance can be dissolved. The dissolved substance is called a solute, the liquid (generally in excess) that dissolves other substances is called a solvent, and the resulting mixture is called a solution. Under constant temperature and constant pressure, the mass dissolved when a solid solute reaches saturation in 100 g of solvent is called solubility. The solubility of a gas refers to the volume when the gas reaches saturation in 1 volume of solvent under 101Kpa and a certain temperature. If a solute dissolves well in a solvent, we say the substance is soluble; if the solubility is not high, the substance is said to be slightly soluble; if it is difficult to dissolve, the substance is said to be insoluble or insoluble. The solubility of a substance is a physical property. Where not stated, solubility usually refers to the solubility of a substance in water.
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