Areas of Use :
Properties: Easily soluble in water. Its aqueous solutions are alkaline and when left in the air, sodium sulfate is rapidly formed. Sodium sulfite is a reducing, bleaching and sulfiding agent and acts as a preservative. If treated with strong acids, sulfur dioxide is released. Elemental sulfur dissolves in aqueous solutions of sodium sulfite with the formation of sodium thiosulfate. The density of sodium sulfite in solutions of various concentrations is in the table below.
Sodium sulfite (Na2SO3), a soluble sodium salt of sulfurous acid, exhibits blinding, desulfurizing and dechlorinating properties that are widely applied in various fields. It is first used in the pulp and paper industry for its flaking activity. It can be used as a good additive to help maintain the fresh appearance of good products. In addition, sodium sulfite is a component of many pharmaceutical substances that are effective in maintaining the potency and stability of drugs. It can also be applied as an oxygen-scavenging agent in water treatment and can be applied for the preservation of flue gas desulfurization and photo developer solutions, etc.