What is a Sodium bisulfite (Na₂SO₃)?

Sodium bisulfite (Na₂SO₃) is an inorganic compound that appears as a colorless or white crystalline powder, highly soluble in water. It is widely used as a reducing agent, bleaching agent, and preservative in various industries due to its strong oxidizing properties. One of the primary uses of sodium bisulfite is as a bleaching agent. It is commonly used in the textile, paper, and food industries to bleach materials and prevent oxidation. In the food industry, it is added to products such as dried fruits and wine to preserve color and prevent spoilage.

Sodium bisulfite is also used as a reducing agent in chemical synthesis and metal treatment. It plays a role in reducing other substances in oxidation-reduction reactions. Additionally, it is employed in water treatment and flue gas cleaning to reduce harmful emissions. While sodium bisulfite is useful in many applications, it is a strong reducing agent, which means it should be handled with care. It is reactive in moist or acidic conditions and requires proper storage to avoid degradation.

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