Description
Sodium Hydrosulfite, also known as Sodium Dithionite, is a powerful reducing agent with the chemical formula Na₂S₂O₄.
It appears as a white to grayish crystalline powder or light lemon-colored flakes and is widely used across textile, paper, food processing, leather, photography, and water treatment industries.
Product Specifications
| Property | Details |
| Chemical Name | Sodium Dithionite |
| Chemical Formula | Na₂S₂O₄ |
| Molar Mass | 174.11 g/mol (Anhydrous) |
| Molar Mass (Dihydrate) | 210.15 g/mol |
| Appearance | White to grayish crystalline powder or light lemon-colored flakes |
| Odor | Mild sulfurous odor |
| Density | 2.13 g/cm³ (Anhydrous), 1.58 g/cm³ (Dihydrate) |
| Melting Point | 52°C (Dihydrate) |
| Boiling Point | Decomposes before boiling |
| Water Solubility | Approximately 250 g/L at 20°C |
Industrial Applications of Sodium Hydrosulfite
Textile Industry
Sodium Hydrosulfite is extensively used in the textile industry for vat dyeing processes.
It converts water-insoluble dyes such as indigo into soluble forms, enabling deep and uniform dye penetration into fabric fibers.
It is also used for color stripping, discharge printing, and textile bleaching.
Pulp and Paper Industry
In the paper industry, Sodium Dithionite serves as an effective bleaching agent that enhances the brightness and whiteness of wood pulp without damaging the fibers.
Food Processing Industry
Food Grade Sodium Hydrosulfite is used as a bleaching and preserving agent for products such as dried fruits, sugar, glucose, and vegetables.
It helps maintain product color and prevents unwanted browning during processing.
Water Treatment
The chemical is widely used to remove dissolved oxygen, reduce iron stains, and improve overall water quality in industrial water treatment systems.
Leather, Photography & Other Industries
Sodium Hydrosulfite functions as a decolorizing agent in leather processing, photographic applications, and several specialty chemical manufacturing processes.
Grades of Sodium Hydrosulfite
Technical Grade Sodium Hydrosulfite
Technical Grade Sodium Hydrosulfite typically offers purity levels between 85% and 90%, making it suitable for demanding industrial applications.
Applications
- Textile dyeing and bleaching
- Color stripping
- Paper pulp bleaching
- Water treatment
- Oxygen scavenging
- Industrial chemical processing
Food Grade Sodium Hydrosulfite
Food Grade Sodium Hydrosulfite is manufactured under strict quality standards to comply with food safety regulations and impurity limits.
Applications
- Sugar refining
- Dried fruit processing
- Vegetable processing
- Food preservation
- Color retention
- Food bleaching
Genome Specialities is a trusted supplier of premium-quality Sodium Hydrosulfite for diverse industrial applications.
We are committed to delivering products that meet stringent quality standards while ensuring reliable supply and technical support.
Our Advantages
- High-purity Technical and Food Grade products
- Consistent product quality
- Competitive pricing
- Reliable global supply
- Expert technical assistance
- Timely delivery
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