Sodium Hydrosulfite

Sodium hydrosulfite, with the chemical formula Na₂S₂O₄, is a significant chemical compound. It is a white or yellowish crystalline powder that is readily soluble in water. Sodium hydrosulfite serves as a strong reducing agent. It is extensively utilized in the textile industry for bleaching and brightening fibers such as cotton. Additionally, it finds application in the paper and pulp industry for delignification and pulp brightening, as well as in dyeing and other chemical processes.

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Sodium Hydrosulfite

Product Description

Sodium Hydrosulfite

Chemical Formula: Na₂S₂O₄
CAS Number: 7775-14-6
Appearance: White to grayish-white crystalline powder, odorless.

Key Features

Strong reducing agent, soluble in water, insoluble in ethanol.
Decomposes easily in moist air, releasing sulfur dioxide (SO₂).
Widely used in textile, paper, food, and chemical industries.
Requires airtight storage to avoid contact with air and moisture.

Applications

Textile Industry:

Used as a reducing agent in dyeing and bleaching processes.

Paper Industry:

Used in pulp bleaching to improve paper whiteness.

Food Industry:

As a food additive (E225), used for preservation and antioxidation.

Chemical Industry:

Used in the synthesis of other chemicals, such as sodium thiosulfate.

Other Applications:

Used in water treatment, mineral flotation, and environmental protection.

Safety and Handling

Storage: Store in a cool, dry, and well-ventilated area, avoiding contact with air and moisture.
Safety: Wear protective equipment (e.g., gloves, masks) during handling to avoid inhaling dust.
Transport: Follow hazardous chemical transportation regulations.

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