Sodium metabisulfite is a kind of crystal, white, melting point 851 ℃, specific gravity 2.17, and solubility in water. It is an important raw material for the chemical industry and is often used to manufacture useful compounds such as sulfuric acid, Copper(II) sulfate and Sodium thiosulfate.

The solubility of sodium metabisulfite refers to the maximum mass of sodium metabisulfite that can be dissolved per liter of water at a certain temperature. The size of solubility is influenced by temperature. The higher the temperature, the greater the solubility, while the lower the temperature, the smaller the solubility.

The solubility of sodium metabisulfite is relatively high. At 25 ℃, the maximum mass of sodium metabisulfite soluble in each liter of water is 35.9 grams; At 100 ℃, the maximum mass of sodium metabisulfite soluble in each liter of water is 118 grams; At 200 ℃, the maximum mass of sodium metabisulfite soluble in each liter of water is 327g.

The solubility of sodium metabisulfite is affected by the nature of water. The higher the pH value of water, the greater the solubility; The higher the Ionic strength of water, the greater the solubility; The higher the temperature of water, the greater its solubility.

What Is the Solubility of Sodium Metabisulfite

In addition, the solubility of sodium metabisulfite is also affected by the pressure. The higher the pressure, the smaller the solubility; The lower the air pressure, the greater the solubility. For example, under the condition of 20 ℃ and normal pressure, the maximum mass of sodium metabisulfite soluble in each liter of water is 35.9 grams; At 20 ℃ and under high pressure, the maximum mass of sodium metabisulfite that can be dissolved in each liter of water can reach 45.5g.

In addition, the solubility of sodium metabisulfite is also affected by the nature of the substance. For example, adding certain electrolytes will increase the solubility of sodium metabisulfite; At the same time, the addition of certain insoluble substances will reduce the solubility of sodium metabisulfite.

In a word, the solubility of sodium metabisulfite is affected by many factors, such as temperature, water quality, air pressure, material properties, etc. The parameters should be adjusted reasonably according to the actual situation to obtain the appropriate solubility.