BaS2O32

BaS2O32 refers to the chemical compound barium dithionite. Dithionite is an oxyanion with the chemical formula S2O42-. Barium dithionite is an ionic compound formed between barium cations (Ba2+) and dithionite anions (S2O42-). It typically exists as a white solid.

Barium dithionite is soluble in water, where it can undergo decomposition, particularly in acidic solutions, yielding sulfur dioxide and other sulfur compounds. The dithionite anion is a strong reducing agent. Historically, dithionites have found applications as reducing agents in various chemical processes, including textile dyeing and as a bleaching agent for paper pulp. However, due to safety and environmental concerns, their use has diminished in some areas. The preparation of barium dithionite can involve the reaction of barium hydroxide with sulfur dioxide.