What is Na2S2O6? Important knowledge about Na2S2O6.

Na₂S₂O₆, also known as Disulfite (VI) sodium, or in English as Sodium dithionite. This is a chemical substance with a molecular weight of 174.107 g/mol. The Na₂S₂O₆ molecule consists of 2 sodium atoms, 2 sulfur atoms, and 6 oxygen atoms. In aqueous solution, it dissociates into 2 sodium ions and disulfite ions.

Properties: Na₂S₂O₆ is a solid, white, odorless substance. This substance has strong alkaline properties with a pH greater than 7. In the process of chemical reactions, Na₂S₂O₆ is often used as a strong reducing agent.

Chemical equation: Na₂S₂O₆ can react with metals, acids, non-metals, and salts. Specifically, Na₂S₂O₆ can react with HCl to produce NaCl, SO₂, S, and H₂O. In addition, Na₂S₂O₆ can also react with metals such as Fe, Cu, Zn to produce corresponding sodium salts.

Na₂S₂O₆ can be synthesized in the laboratory from the reaction between H₂SO₄ and Na₂SO₃ in an alkaline environment. On an industrial scale, Na₂S₂O₆ is produced by melting Na₂SO₃ with sulfur and then rapidly cooling it.