Sodium Hydrosulphite
$ 3.05 Original price was: $ 3.05.$ 2.94Current price is: $ 2.94.
Sodium Hydrosulphite, also known as sodium dithionite, is a white to yellowish powder with a strong reducing property. It is highly soluble in water and decomposes readily, releasing sulfur dioxide and sulfites. Widely used as a powerful reducing agent and bleaching agent, it finds applications in textile processing, paper and pulp industries, water treatment, and chemical manufacturing. Its ability to break down colored compounds makes it ideal for decolorization and cleaning processes.
Sodium Hydrosulphite
Primary Uses
- Textile Industry
- Used as a reducing agent in the vat dyeing process and for bleaching fabrics.
- Removes excess dye and helps in color correction of textiles.
- Paper and Pulp Industry
- Employed in deinking recycled paper to remove inks and contaminants.
- Acts as a bleaching agent to brighten paper products.
- Water Treatment
- Utilized for the removal of chlorine and chloramines from water, protecting aquatic life and equipment.
- Reduces harmful oxidizing agents in wastewater treatment.
- Leather Industry
- Used in the deliming process and to bleach hides and skins during leather manufacturing.
- Chemical Manufacturing
- Serves as a reducing agent in the synthesis of various chemicals, including dyes and pharmaceuticals.
Secondary Uses
- Photography
- Used as a reducing agent in photographic developers to control image development.
- Metal Treatment
- Employed for removing surface oxides and scales during metal finishing and cleaning.
- Food Industry
- Used as a bleaching agent in some food processing applications under regulated conditions.
1. Basic Identification Attributes
- Chemical Name (IUPAC): Sodium dithionite
- Common/Trade Name: Sodium Hydrosulphite
- CAS Number: 7775-14-6
- HS Code: 2832.30
- Synonyms: Sodium dithionite, Sodium hydrosulfite
2. Physical & Chemical Properties
- Physical State: Powder or granules
- Color & Odor: White to pale yellow; sulfurous odor
- Solubility: Soluble in water, decomposes on contact with moisture and acids
- pH: Alkaline in solution (~10-11)
- Density: Approx. 1.4 g/cm³
3. Safety & Hazard Attributes
- GHS Classification: Oxidizing solid (self-reactive); harmful if swallowed or inhaled; causes skin and eye irritation
- Toxicity: Can release toxic sulfur dioxide gas upon decomposition
- Exposure Limits: Use appropriate industrial hygiene measures
4. Storage & Handling Attributes
- Storage Conditions: Store in a cool, dry, well-ventilated area away from moisture, acids, and oxidizing agents
- Container Type: Supplied in moisture-proof bags or drums
- Shelf Life: Limited; sensitive to moisture and air
- Handling Precautions: Avoid dust formation, inhalation, and contact with skin and eyes
- Storage Measures: Keep containers tightly closed and stored in a dry environment
5. Regulatory & Compliance Attributes
- Complies with industrial chemical regulations including OSHA, REACH, and local hazardous material standards
- Proper labeling and handling as per transport and safety guidelines
6. Environmental & Health Impact
- Biodegradability: Breaks down in environment; sulfur compounds may cause localized effects
- Ecotoxicity: Toxic to aquatic life in high concentrations; avoid release into waterways
- Bioaccumulation: Not expected
Safety Handling Precautions
- PPE Required: Gloves, goggles, dust mask or respirator, protective clothing
- Handling Guidelines: Use in well-ventilated areas; avoid inhalation of dust and contact with skin or eyes
- Storage Measures: Store away from moisture and incompatible substances to prevent hazardous decomposition
First Aid Measures
- Inhalation: Move to fresh air immediately; seek medical attention if symptoms persist
- Skin Contact: Wash affected area with plenty of water; remove contaminated clothing
- Eye Contact: Flush eyes thoroughly with water for at least 15 minutes; seek medical attention
- Ingestion: Do not induce vomiting; rinse mouth and seek immediate medical help
Firefighting Measures
- Fire Hazards: May decompose explosively when heated or in contact with acids and moisture
- Extinguishing Media: Use dry chemical powder, CO₂, or foam; avoid water as it may accelerate decomposition
- Special Precautions: Wear full protective gear and self-contained breathing apparatus
- Hazardous Combustion Products: Sulfur dioxide, sulfur oxides, sodium oxides
Related products
Basic Laundry Detergent
Basic Laundry Detergent is a cleaning agent formulated primarily for washing textiles such as clothes, linens, and other fabrics. It typically contains surfactants, builders, enzymes, and other additives that work synergistically to remove dirt, stains, and odors from fabrics. Designed for household and industrial use, laundry detergents help restore fabric cleanliness and freshness while maintaining fiber integrity. Basic laundry detergents can be in powder, liquid, or tablet form, and are formulated to perform in various water hardness conditions and temperatures.
Benzyl Konium Chloride
Benzyl Konium Chloride (BAC) 50% is a quaternary ammonium compound with potent antimicrobial and disinfectant properties. It is a cationic surfactant widely used for its bactericidal, fungicidal, and virucidal effects. This clear to pale yellow liquid concentrate is highly soluble in water and is commonly used in healthcare, sanitation, and industrial hygiene applications. BAC 50% solutions serve as active ingredients in disinfectants, sanitizers, and antiseptics due to their effectiveness against a broad spectrum of microorganisms.
Caustic Soda Pearls
Caustic Soda Pearls are small, solid, spherical particles of sodium hydroxide (NaOH) produced by a controlled cooling and solidification process. These pearls offer superior flowability, uniform size distribution, and reduced dust generation compared to flake or powder forms. They are highly soluble in water, exhibiting a strong alkaline nature with vigorous exothermic dissolution. Caustic Soda Pearls are widely used across industries including chemical manufacturing, water treatment, pulp and paper processing, and detergents due to their purity, ease of handling, and efficient dissolution characteristics.
Hydrazine Food Grade
Hydrazine Food Grade is a high-purity form of hydrazine (N₂H₄), a highly reactive, colorless, and fuming liquid with a pungent ammonia-like odor. It is a powerful reducing agent and chemical intermediate widely used in industrial applications. The food-grade specification ensures purity and controlled impurity levels suitable for limited and specialized food industry uses, primarily as a processing aid or sterilizing agent. Hydrazine exhibits strong nucleophilic and reducing properties, enabling various chemical transformations and sterilization processes.
Oxalic Acid
Oxalic Acid is a naturally occurring dicarboxylic acid widely used as a powerful organic acid in various industrial, cleaning, and chemical processes. It appears as a white crystalline solid and is soluble in water. Oxalic Acid is valued for its effectiveness in metal cleaning, bleaching, and as a chelating agent. Packaged in 25kg bags, it is suitable for both industrial and laboratory use.
Potassium Hydroxide
Potassium Hydroxide is a highly concentrated, caustic alkaline chemical available as a solid (pellets, flakes) or concentrated aqueous solution. It is a strong base widely used in industrial processes, chemical manufacturing, and as a reagent. Potassium Hydroxide provides excellent neutralizing, saponifying, and cleaning properties and is essential in producing potassium soaps, biodiesel, fertilizers, and various chemical compounds. Its high purity and concentration (90%) make it suitable for demanding applications requiring strong alkalinity.
Sodium Sulphide
Sodium Sulphide (Na₂S) is a yellow to red-yellow crystalline solid or powder with a characteristic odor of hydrogen sulfide. It is highly soluble in water, forming strongly alkaline solutions. This 25kg packaged product is widely used in the chemical, leather, pulp and paper, and textile industries as a reducing agent, sulfur donor, and in flotation processes. Due to its strong reducing properties and reactivity, it must be handled with care under proper safety measures.
Sodium Sulphite (Blue)
Sodium Sulphite Blue is a white to bluish-white crystalline powder with the chemical formula Na₂SO₃. The “Blue” grade indicates a specific industrial quality often containing minor additives or impurities, used primarily in water treatment and chemical industries. It acts as an effective oxygen scavenger, reducing agent, and preservative. This 25kg packaged product is highly soluble in water, forming alkaline solutions, and is widely used in pulp and paper, water treatment, textile, and photographic industries.

Preservatives(food)
Flavor Enhancers
Acidulants
Sweeteners
Antioxidants
Colorants(food)
Nutraceutical Ingredients (food)
Nutrient Supplements
Emulsifiers
Collectors
Dust Suppressants
Explosives and Blasting Agents
Flocculants and Coagulants
Frothers
Leaching Agents
pH Modifiers
Precious Metal Extraction Agents
Antioxidants(plastic)
Colorants (Pigments, Dyes)
Fillers and Reinforcements
Flame Retardants
Monomers
Plasticizers
Polymerization Initiators
Stabilizers (UV, Heat)
Antifoaming Agents
Chelating Agents
Coagulants and Flocculants
Corrosion Inhibitors
Disinfectants and Biocides
Oxidizing Agents
pH Adjusters
Scale Inhibitors( water)
Antioxidants(cosmetic)
Emollients
Fragrances and Essential Oils
Humectants
Preservatives
Surfactants(cosmetic)
Thickeners
UV Filters
Fertilizers
Soil Conditioners
Plant Growth Regulators
Animal Feed Additives
Biostimulants
Pesticides (Herbicides, Insecticides, Fungicides)
Active Pharmaceutical Ingredients (APIs)
Excipients
Solvents(pharmaceutical)
Antibiotics
Antiseptics and Disinfectants
Vaccine Adjuvants
Nutraceutical Ingredients (pharmaceutical)
Analgesics & Antipyretics
Analytical Reagents
Solvents(lab)
Chromatography Chemicals
Spectroscopy Reagents
microbiology-and-cell-culture-reagents
Molecular Biology Reagents
Biochemical Reagents
Inorganic and Organic Standards
Laboratory Safety Chemicals
Specialty Laboratory Chemicals(Special Laboratory Equipment)
Demulsifiers
Hydraulic Fracturing Fluids
Scale Inhibitors(oil)
Surfactants(oil)
Drilling Fluids
Dyes and Pigments
Bleaching Agents
Softening Agents
Finishing Agents
Antistatic Agents
Admixtures
Waterproofing Agents
Sealants and Adhesives
Curing Compounds
Concrete Repair Chemicals
Anti-Corrosion Coatings
Surfactants(cleaning)
Builders
Enzymes
Solvents (Cleaning)
Fragrances
Electronic Chemicals
Catalysts
Lubricants
Photographic Chemicals
Refrigerants
Automotive chemicals
Pyrotechnic Chemicals
Biodegradable Surfactants
Bio-based Solvents
Renewable Polymers
Carbon Capture Chemicals
Wastewater Treatment Chemicals
Pigments
Solvents(paint)
Specialty Coatings
Binders/Resins
Additives
Driers
Anti-Corrosion Agents
Functional Coatings
Application-Specific Coatings
Leavening Agents
Dough Conditioners
Flour Treatments
Fat Replacers
Decoratives
Preservatives(baking)
Plasticizers & Softeners
Reinforcing Agents
Adhesion Promoters
Vulcanizing Agents
Antidegradants
Blowing Agents
Fillers & Extenders
Accelerators & Retarders