Sodium Sulphite Anhydrous 98% ACS

What is Sodium Sulphite Anhydrous 98% ACS? Sodium Sulphite Anhydrous (Na₂SO₃) is a high-purity, ACS-grade inorganic compound with a purity of 98%. It is widely used as a reducing agent, preservative, and oxygen scavenger in industrial, laboratory, and water treatment applications.

Shipped from Manchester, UK Facility: Our Sodium Sulphite Anhydrous 98% ACS is sourced and packaged using non-toxic, chemical-resistant containers, ensuring reliable quality for our customers.

Frequent Uses

Water Treatment
Used as an oxygen scavenger in boiler and cooling water systems to prevent corrosion.

Photographic Processing
Acts as a preservative in photographic solutions to maintain chemical stability.

Pulp and Paper Industry
Applied in the bleaching and pulping process to reduce chlorine levels and improve processing efficiency.

Chemical and Laboratory Applications
Employed as a reducing agent and reagent in analytical chemistry and industrial formulations.

FOOD GRADE CERTIFIED

Minimum Assay: >98%
Molecular Formula: Na2SO3
Molecular Weight: 126.05 g/mol
Melting Point: 884°C
Alkalinity (Na2CO3); < 0.1%
Thiosulphates (S2O3): < 0.01%
Iron (Fe): < 0.0005%
Heavy metals (Pb): < 0.001%
Selenium (Se): < 0.0005%
Arsenic (As): < 0.0001%
Lead (Pb): < 0.0002%
Mercury (Hg): < 0.0001% 

Meets the requirements of EC Directive 96/77 (Food Additives), FCC V (2004), ANSI PH4.275, ISO 418 (Photo Standards). Certified Food Grade.

Cas Number: 7757-83-7

Einecs Number: 231-821-4

HS Code / Commodity Code: 2832100000