Sodium sulfite

Sodium sulfite is a chemical compound. White odorless powder. Density 2.633 g / cm3. It is moderately toxic. ^[1]

It is made of sodium and sulfite ions. It is one of the sulfites used to preserve dried food. It is used to remove chlorine from pools. It reacts with acids to produce sulfur dioxide. It is a weak reducing agent. When it is oxidized, it is converted to sodium sulfate. Its chemical formula is Na₂SO₃.