High purity 99% Sodium sulfite CAS 7757-83-7 with white crystalline powder

Product name: Sodium sulfite

English alias: Anhydrous sulphite.

CAS: 7757-83-7

Molecular formula: Na2O3S

Appearance: White crystalline powder

Package: 25kg/bag

What is Sodium sulfite？

Sodium sulfite is a versatile inorganic compound widely valued for its strong reducing properties. This white, water-soluble powder acts as an effective antioxidant, preservative, and bleaching agent across numerous industries. Its ability to scavenge oxygen and inhibit oxidation makes it crucial for protecting products from spoilage and degradation. It is also an essential chemical in photographic development and water treatment processes. The anhydrous form offers higher purity and stability compared to its hydrated counterparts.

COA:

Application:

1.Food Industry: Used as a preservative (E221) and antioxidant to prevent discoloration and spoilage in dried fruits, canned goods, fruit juices, and wine.

2.Water Treatment: Acts as an oxygen scavenger in boiler water treatment to prevent corrosion and scale formation.

3.Photographic Industry: Serves as an essential developing agent in photographic solutions.

4.Pulp & Paper Industry: Used as a bleaching agent and dechlorination agent in chemical pulp production.

5.Textile Industry: Employed as a bleaching, desulfurizing, and dechlorinating agent in textile processing.

6.Chemical Manufacturing: Functions as a reducing agent and sulfonating agent in various organic synthesis processes.

7.Pharmaceuticals: Used in some medications as an antioxidant to maintain product stability.

Safety profile:

Sodium sulfite is generally recognized as safe (GRAS) for use in food at specified levels. However, it can cause irritation to the skin, eyes, and respiratory system. It may trigger allergic reactions or asthma symptoms in sensitive individuals, particularly sulfite-sensitive asthmatics. When in contact with acids, it decomposes to release sulfur dioxide (SO₂), a toxic gas. Appropriate personal protective equipment (PPE) including gloves and dust masks should be worn during handling. It is not considered an environmental hazard.

Storage requirements:

keep the product dry

relative humidity < 50%

protect product against influences of weather and contamination

Transport & Packaging:

Sodium sulfite for technical applications is solely supplied in packaging of different sizes . It can be packaged in various items: 25 kg drums, 1000 kg IBC drums.