natriumbisulfitt

Natriumbisulfitt, also known as natriumbisulfite, is the inorganic compound with the formula NaHSO3. It is the sodium salt of bisulfite and appears as a white crystalline solid that dissolves readily in water. In solution it behaves as a weak acid and acts as a reducing agent, capable of donating electrons to oxidizing substances.

Production and properties: Natriumbisulfitt is typically produced by introducing sulfur dioxide into an alkaline solution, such as sodium hydroxide or sodium carbonate, forming sodium bisulfite which can be isolated as a solid or sold as a solution. It is prone to releasing sulfur dioxide under acidic conditions or upon heating, and it can be oxidized to sulfite or sulfate species in the presence of air or oxidants. The compound is highly soluble in water and sensitive to moisture and heat.

Uses: It is widely used in the food and beverage industry as a preservative and antioxidant to inhibit browning and preserve color and flavor. It is commonly employed in dried fruits, wines, fruit juices and some bakery products. Beyond food, natriumbisulfitt serves as a reducing agent and bleaching agent in industrial processes, and it has applications in photography, textile and chemical laboratories as a reagent or stabilizer.

Safety and regulation: Some individuals have sulfite sensitivity or asthma and can experience adverse reactions to sulfites, especially when exposed to sulfiting agents or heated releases of sulfur dioxide. It should be stored in a cool, dry place in a tightly closed container and kept away from strong oxidizers. Proper labeling and handling, including respiratory protection in some settings, are advised.