Sodium Sulfite

Sodium sulfite is a versatile sodium-based compound widely used for its reducing, preservative, and oxygen-scavenging properties. In water treatment, it plays a critical role in boiler systems and industrial processes by removing dissolved oxygen, thereby preventing corrosion in pipes and equipment. In chemical manufacturing, sodium sulfite serves as a key intermediate in the production of dyes, photographic chemicals, and other specialty compounds.

Beyond these uses, sodium sulfite is applied in the pulp and paper industry for bleaching and pulping processes, in detergents as a stabilizer, and in food and beverage production as a preservative to maintain freshness and color stability. Its ability to protect against oxidation also makes it valuable in pharmaceuticals and cosmetics. With its effectiveness, cost-efficiency, and multifunctional performance, sodium sulfite remains an essential material across industries ranging from water treatment and manufacturing to food processing and specialty chemical production.

Synonyms: Sodium sulfite, Na₂SO₃, disodium sulfite

Characteristics:

IUPAC Name: Disodium sulfite

CAS Number: 7757-83-7

UN Number: N/A

Recommended Use / Industries:

• Pulp and paper bleaching
• Water treatment
• Photography chemicals
• Food preservation