Sodium Hydrosulfite (Sodium Hydrosulphite) is a high-performance reducing and bleaching agent with the chemical formula Na₂S₂O₄. It is widely used in the textile, paper & pulp, kaolin, mineral processing, leather, and chemical industries for bleaching, decolorization, dye stripping, and reduction processes. It offers excellent reducing power, fast dissolution, and reliable industrial performance.
Chemical Name: Sodium Hydrosulfite (also spelled Sodium Hydrosulphite)
Chemical Formula: Na₂S₂O₄
CAS No.: 7775-14-6
Molecular Weight: 174.11 g/mol
Appearance: White to Slightly Grey Crystalline Powder
Purity: Industrial Grade / Technical Grade (Available in 85%, 88%, 90% & Higher Purity Grades)
Application: Textile Dyeing, Textile Printing, Paper & Pulp Industry, Kaolin Bleaching, Mineral Processing, Leather Industry, Water Treatment & Chemical Manufacturing
Sodium Hydrosulfite (Na₂S₂O₄), also known as Sodium Hydrosulphite, is a premium-quality reducing agent widely used in textile, paper, mineral, leather, and chemical industries. It is recognized for its exceptional reducing power, excellent bleaching performance, and ability to remove unwanted color from various materials without damaging the substrate. Due to its fast reaction rate and high efficiency, Sodium Hydrosulfite has become one of the most important industrial chemicals for bleaching, decolorization, and reduction processes.
Manufactured under strict quality control, Sodium Hydrosulfite provides consistent purity and reliable performance, making it suitable for both large-scale industrial production and specialty chemical applications. It is particularly valued in textile dyeing, where it removes excess dyes, creates discharge printing effects, and supports vat and sulfur dyeing processes.
Its strong reducing properties also make it indispensable in paper bleaching, kaolin clay whitening, mineral processing, leather treatment, wastewater treatment, and specialty chemical manufacturing.
Sodium Hydrosulfite is supplied as a free-flowing crystalline powder that dissolves readily in water to produce a powerful reducing solution. Unlike oxidizing bleaches, it removes color by chemically reducing colored compounds rather than oxidizing them.
Because of its high reducing capacity, Sodium Hydrosulfite effectively removes unwanted pigments, iron stains, and residual dyes while maintaining the integrity of treated materials.
Its reliable performance and ease of use make it a preferred reducing chemical for numerous industrial applications.
Provides rapid and efficient reduction reactions required in bleaching, dye removal, and chemical processing.
Removes unwanted coloration from paper pulp, kaolin clay, textiles, and minerals while preserving product quality.
Improves color control during dyeing and discharge printing operations.
Manufactured with consistent quality to ensure reliable industrial performance.
Dissolves quickly in water, allowing easy preparation of working solutions.
High efficiency at recommended dosage levels helps reduce chemical consumption and operational costs.
Suitable for a broad range of industrial processes requiring reduction and decolorization.
Sodium Hydrosulfite is extensively used for:
It improves color consistency while minimizing fabric damage when used according to recommended processing conditions.
Used for:
It increases paper brightness without significantly reducing fiber strength.
Widely used in:
It removes iron oxide impurities, producing brighter and higher-value mineral products.
Applied in:
It improves the appearance and consistency of finished leather.
Used as a reducing agent in:
Used in selected industrial water treatment processes to reduce residual oxidizing agents and improve process efficiency.
Compared with many oxidizing bleaching agents, Sodium Hydrosulfite offers several important advantages:
These advantages make it one of the most trusted reducing chemicals in industrial manufacturing.
Sodium Hydrosulfite is commonly supplied in:
Moisture-resistant packaging is recommended to maintain product quality.
To maintain product stability:
Proper storage significantly extends product shelf life and preserves reducing performance.
Sodium Hydrosulfite should be handled according to standard industrial safety practices.
Sodium Hydrosulfite (Sodium Hydrosulphite – Na₂S₂O₄) is a high-performance industrial reducing agent widely used in textile dyeing, paper bleaching, kaolin whitening, mineral processing, leather manufacturing, water treatment, and chemical production. Its exceptional reducing power, excellent bleaching efficiency, fast solubility, and consistent quality make it an essential chemical for industries requiring reliable decolorization and reduction processes.
Whether used for textile color stripping, paper brightening, kaolin bleaching, or specialty chemical manufacturing, Sodium Hydrosulfite delivers dependable performance, improved product quality, and cost-effective processing. Its versatility and proven industrial reliability make it one of the world’s most widely used reducing agents.
Supplied By: Max Build Care
Trusted Supplier of Industrial Chemicals, Construction Materials, Specialty Minerals & High-Performance Chemical Solutions
