Ammonium sulfite

Ammonium sulfite is colorless crystal and easy to deliquescence. Easily soluble in water, its aqueous solution is weakly alkaline, slightly soluble in ethanol, and insoluble in acetone. It is easily oxidized to Chemicalbook ammonium sulfate in air. When heated, it can be decomposed into ammonia and sulfur dioxide. Preparation method: the tail gas in sulfuric acid production can be absorbed by water, then reacted with ammonium bicarbonate, separated and dried

Purpose

It is used as a highly efficient absorbent for removing a small amount of hydrogen sulfide from coal gas, and can be used in medicine, photographic reductant, dye intermediate, etc