Ammonium paratungstate solubility often means its solubility in water, APT is slightly soluble in water, and the solubility is less than 2% at 20℃, while with the rising of temperature, APT solubility will increase slightly.
Solubility is signed of S, the quality of a solid solute in 100g of solvent when achieved saturation at a certain temperature, which is the solubility of the substance in this solvent. Solubility of the substance belongs to physical property. Furthermore, in the Unspecified circumstances, it is generally it refers to the solubility in the water.
Whether one substance is dissolved or not, and the dissolving ability depends on property (refer to solvent and solute) of the material itself on the one hand; on the other hand, it relates to the external conditions such as temperature, pressure, type of solvent and so on. In addition, the solubility is significantly affected by temperature, and the solubility of most solid material is increased with the temperature rising; while the solubility of gaseous substances is contrary, decreases with increasing of temperature.
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