Sodium Hydrosulfite Formula

The chemical formula for sodium hydrosulfite is Na2S2O4. It is also known as sodium dithionite and is a white crystalline powder that is soluble in water. Sodium hydrosulfite is commonly used as a reducing agent in the textile industry to remove excess dye from fabrics, and it is also used in bleaching agents and as a food additive. It should be handled with care as it can be hazardous if not used properly.