- Product Name: Sodium Dithionite
- CAS: 7775-14-6
- Catalog: HG-BULK005
- Applications: Textile Industry, Paper Industry, Chemical Industry, Food Industry.
Known for its ability to reduce various compounds, sodium dithionite plays a crucial role in industrial processes that require bleaching, dyeing, and chemical reduction. This white, crystalline powder serves as a powerful reducing agent with diverse applications in textile, paper, chemical, and food industries.
Key Features
Odor
- Odorless or slightly smells of sulfur dioxide (SO2), which is typical of its decomposing nature.
Solubility
- It is soluble in water, making it suitable for a variety of aqueous processes.
Reducing Agent
- It acts as a powerful reducing agent, ideal for applications in textile dyeing, chemical synthesis, and various bleaching processes.
Technical Data
| Items | Type I | Type II | Type III | Type IV (Food Additive) |
| Na2S2O4 | ≥90% | ≥88% | ≥85% | ≥85% |
| Fe | ≤20ppm | ≤20ppm | ≤20ppm | ≤20ppm |
| Zinc (Zn) | ≤1ppm | ≤1ppm | ≤1ppm | ≤1ppm |
| Other heavy metal (calculated as Pb) | ≤1ppm | ≤1ppm | ≤1ppm | ≤1ppm |
| Water insoluble matters | ≤0.05% | ≤0.05% | ≤0.05% | ≤0.05% |
| Shelf life(month) | 12 | 12 | 12 | 12 |
Applications
Alfa Chemistry's sodium dithionite has a wide range of industrial applications due to its strong reducing properties. It plays a crucial role in:
Textile Industry
- Reduction Dyeing: Used as a reducing agent to facilitate dyeing with reduction dyes, it ensures effective color absorption.
- Bleaching: Ideal for wool and silk, enhancing brightness and cleanliness.
- Dyeing Auxiliaries: It assists in the printing of reduction dyes, improving adhesion.
- Color Stripping & Cleaning: It removes dye stains and cleans dye vats.
Paper Industry
- Pulp Bleaching: It effectively bleaches mechanical and thermomechanical pulps, improving paper whiteness.
- Deinking: Used to remove ink from recycled paper pulp, ensuring high-quality recycled paper.
Chemical Industry
- Reducing Agent: Utilized in synthetic chemistry and metal extraction processes, promoting chemical reduction.
Food Industry
- Preservative: It extends shelf life for products like dried fruits and noodles.
- Whitening Agent: Used in mushrooms, bamboo shoots, and candied fruits to maintain freshness.
Storage and Packaging
- Storage: It should be stored in a cool, dry place away from moisture and high temperatures to prevent decomposition.
- Packaging: Carefully packed in iron drums or plastic bags with a net weight of 15-200 kg.
- Transportation: During transportation, appropriate safety measures should be followed due to the product's sensitivity to moisture and air, which can lead to the release of sulfur dioxide (SO2).
Alfa Chemistry's sodium dithionite stands out as a versatile and effective chemical used across various industries, from textile and paper production to food preservation and chemical synthesis. For more information, please feel free to contact us.
