Sodium Dithionite Dihydrate

Sodium dithionite dihydrate is a chemical compound with the formula Na2S2O4·2H2O. It is a white crystalline powder that is soluble in water and has a strong reducing property. The compound is used as a bleaching agent, a reducing agent, and a dechlorinating agent in various industrial processes.

The molecular weight of sodium dithionite dihydrate is 190.12 g/mol. Its melting point is 64℃, and its boiling point is 90℃. The compound is stable under normal conditions but decomposes at higher temperatures or in the presence of acids and oxidizing agents.

In terms of its structure, sodium dithionite dihydrate consists of sodium cations (Na+) and dithionite anions (S2O4^2-) arranged in a crystal lattice. The two water molecules (H2O) in the compound are coordinated to the sodium cations.

As a reducing agent, sodium dithionite dihydrate reacts with oxygen to produce sodium bisulfite (NaHSO3). It also reacts with chlorine and other oxidizing agents to form chloride ions (Cl^-) and sulfur dioxide (SO2) gas.

Overall, sodium dithionite dihydrate is an important chemical compound with many practical applications in industry. Its accurate synthesis, handling, and disposal require strict adherence to safety protocols and regulatory guidelines.