Sodium Bisulfite

Sodium Bisulfite

Sodium bisulfite also known as sodium hydrogen sulfite. It is an unstable salt that readily releases sulfur dioxide (SO₂) in aqueous solutions.

Chemical Formula: NaHSO₃

CAS Number: 7631-90-5

Grade: ACS

Appearance: white, crystalline solid or liquid solution.

Uses:

• Food preservative: In some limited applications, used as a food preservative to prevent discoloration and extend shelf life.

• Antioxidant: Used in some winemaking and brewing processes as an antioxidant to prevent browning and preserve flavor.

Industries and Common Applications:

• Pulp and paper industry: It is used in some pulp bleaching processes.

• Textile industry: Historically used in some dyeing and finishing processes of textiles.

• Pharmaceutical industry: In some limited cases, used as a pharmaceutical excipient (inactive ingredient) in specific formulations.