Sodium hydrosulfite

Sodium hydrosulfide is the chemical compound with the formula NaHS. This compound is the product of the half-neutralization of hydrogen sulfide (H₂S) with sodium hydroxide. NaHS and sodium sulfide are used industrially, often for similar purposes. Solid NaHS is colorless. The solid has an odor H₂S owing to hydrolysis by atmospheric moisture. In contrast with sodium sulfide (Na₂S), which is insoluble in organic solvents, NaHS, being a 1:1 electrolyte, is more soluble.