natriumsulfiet

Natriumsulfiet is the sodium salt of sulfurous acid with the chemical formula Na2SO3. It typically appears as a white crystalline solid and is soluble in water. This compound is formed by the reaction of sulfur dioxide with sodium hydroxide or sodium carbonate.

Industrially, natriumsulfiet is produced in large quantities and finds use in a variety of applications. It serves as a reducing agent, a bleaching agent, and a preservative. In the pulp and paper industry, it is employed in the sulfite pulping process to break down lignin in wood. It is also used in water treatment to remove dissolved oxygen, preventing corrosion.

In food processing, natriumsulfiet acts as a food additive, often indicated by the E number E221. It functions as an antioxidant and preservative, helping to prevent spoilage and maintain the color of certain foods, particularly dried fruits and wines. However, individuals with sulfite sensitivities may experience adverse reactions.

Natriumsulfiet is also utilized in photography as a component in developing solutions and in the textile industry for dyeing and bleaching processes. While generally considered safe when used appropriately, improper handling or excessive exposure can lead to irritation.