Sodium Thiosulphate
$ 2.15 Original price was: $ 2.15.$ 2.01Current price is: $ 2.01.
Sodium Thiosulphate (Na₂S₂O₃) is a white, crystalline, odorless powder or granular solid highly soluble in water. This 25kg packaged chemical is widely used in photographic processing, water treatment, chemical synthesis, and medicine. Known for its reducing and complexing properties, it acts as an effective dechlorinating agent and fixer in photography by dissolving silver halides. It is stable under normal conditions and easily handled for industrial and laboratory applications.
Sodium Thiosulphate
Primary Uses
- Photographic Industry
- Fixer Agent: Removes unreacted silver halides from photographic emulsions, stabilizing the image.
- Water Treatment
- Dechlorination: Neutralizes chlorine and chloramine in drinking and wastewater.
- Heavy Metal Precipitation: Used to precipitate heavy metals and reduce toxicity.
- Chemical Industry
- Reducing Agent: Employed in chemical syntheses and redox reactions.
- Complexing Agent: Forms complexes with heavy metals aiding in detoxification.
- Medical Field
- Antidote: Used to treat cyanide poisoning by converting cyanide to less toxic thiocyanate.
- Topical Agent: Used in treatments for certain skin conditions.
- Mining Industry
- Gold Extraction: Utilized in cyanide leaching processes as a detoxifying agent.
- Laboratory & Research
- Analytical Reagent: Used in iodometry and other titrations for quantitative analysis.
Secondary Uses
- Photography
- Bleach Fix: Component in bleach-fix baths for color photographic processing.
- Environmental Applications
- Wastewater Treatment: Detoxifies effluents containing chlorine and heavy metals.
1. Basic Identification Attributes
- Chemical Name (IUPAC): Sodium thiosulfate
- Common/Trade Name: Sodium thiosulphate, hypo (photographic)
- CAS Number: 7772-98-7
- HS Code: 2841.40.00
- Synonyms: Sodium hyposulfite, sodium thiosulfate pentahydrate (hydrated form)
2. Physical & Chemical Properties
- Physical State: White crystalline powder or granules
- Color & Odor: White; odorless
- Solubility: Highly soluble in water (~70 g/100 mL at 20°C)
- Density: 1.667 g/cm³ (pentahydrate)
- Melting Point: Decomposes before melting (above 48°C for pentahydrate)
- pH (1% solution): Neutral to slightly alkaline (7-9)
3. Safety & Hazard Attributes
- GHS Classification: Not classified as hazardous under normal use
- Toxicity: Low toxicity; oral LD₅₀ > 3000 mg/kg (rat)
- Exposure Limits: No specific OEL; general dust precautions advised
- Corrosivity: Non-corrosive
4. Storage & Handling Attributes
- Storage Conditions: Store in a cool, dry place away from acids and moisture
- Container Type: 25kg PE-lined bags or plastic drums
- Shelf Life: 24 months if stored properly
- Handling Precautions: Avoid dust generation; use PPE as needed
5. Regulatory & Compliance Attributes
- REACH Registered
- FDA Approved for specific uses
- Complies with OSHA Hazard Communication Standard
- Not classified as dangerous goods for transport
6. Environmental & Health Impact
- Biodegradability: Inorganic salt; not biodegradable but environmentally safe in typical use
- Ecotoxicity: Low toxicity to aquatic organisms
- Bioaccumulation: None expected
- Aquatic Impact: Excessive discharge may impact water chemistry
Safety Handling Precautions
- PPE Required: Gloves, dust mask, goggles recommended during handling
- Handling Guidelines: Use local exhaust ventilation to minimize dust
- Storage Measures: Keep containers tightly closed and dry
First Aid Measures
- Inhalation: Move to fresh air; seek medical attention if symptoms develop
- Skin Contact: Wash skin with soap and water
- Eye Contact: Rinse with plenty of water for 15 minutes; seek medical attention if irritation persists
- Ingestion: Rinse mouth; seek medical advice if large amounts ingested
Firefighting Measures
- Fire Hazards: Non-flammable; does not support combustion
- Extinguishing Media: Use extinguishing media suitable for surrounding fire
- Hazardous Combustion Products: May release sulfur oxides if heated strongly
Related products
Borax Decahydrate
Borax Decahydrate, also known as sodium tetraborate decahydrate, is a naturally occurring mineral and an important inorganic compound. It appears as colorless or white crystalline granules or powder with a salty, alkaline taste. This compound is widely used in detergents, cosmetics, glass manufacturing, agriculture, and various industrial applications due to its excellent buffering, emulsifying, and antiseptic properties. The “decahydrate” indicates that each molecule of borax contains ten water molecules bound in its crystal structure, contributing to its crystalline appearance and physical properties.
Borax Pentahydrate
Borax Pentahydrate (sodium tetraborate pentahydrate) is an inorganic compound and a hydrated form of borax. It typically appears as colorless to white crystalline granules or powder. This compound contains five molecules of water of crystallization per formula unit, distinguishing it from other borax hydrates such as the decahydrate form. Borax Pentahydrate is widely used across industries including detergents, glass production, agriculture, and cosmetics, valued for its buffering capacity, emulsification, and antiseptic properties. It is soluble in water and exhibits alkaline properties in aqueous solution.
Calcium Chloride Dihydrate
Calcium Chloride Dihydrate (CaCl₂·2H₂O) is a hydrated form of calcium chloride, appearing as white crystalline granules or flakes containing two molecules of water of crystallization. It is highly soluble in water and exhibits strong hygroscopic and deliquescent properties. This compound is widely used in industrial, pharmaceutical, food, and agricultural sectors due to its moisture absorption, de-icing, dust control, and calcium supplementation capabilities. Compared to anhydrous calcium chloride, the dihydrate form has lower hygroscopicity but is easier to handle and store.
Calcium Lactate Pentahydrate
Calcium Lactate Pentahydrate is a white, crystalline, odorless powder that is the calcium salt of lactic acid with five molecules of water of crystallization. It is moderately soluble in water and has a slightly alkaline pH in solution. Widely used as a calcium supplement in the pharmaceutical and food industries, it is known for its good bioavailability and safety profile. Calcium Lactate Pentahydrate is utilized to prevent and treat calcium deficiencies and plays a role in bone health, muscle function, and enzyme activity. It also finds applications as a food additive and firming agent.
Carbocisteine AJI 92
Carbocisteine AJI 92 is a high-purity pharmaceutical-grade amino acid derivative, chemically known as S-carboxymethyl-L-cysteine. It is a white to off-white crystalline powder with a slightly sulfurous odor and is freely soluble in water. Carbocisteine functions primarily as a mucolytic agent—reducing the viscosity of mucus and promoting expectoration in respiratory tract infections. The "AJI 92" specification refers to its compliance with the purity standards established by Ajinomoto's amino acid quality benchmarks, ensuring it meets stringent pharmaceutical-grade quality control for active pharmaceutical ingredients (APIs). It is widely used in oral syrups, tablets, and granules in both human and veterinary medicine.
Clotrimazole BP2000
Clotrimazole BP2000 is a broad-spectrum antifungal agent belonging to the imidazole class. It appears as a white to off-white crystalline powder that is practically insoluble in water but soluble in organic solvents like ethanol and chloroform. Clotrimazole is widely used in pharmaceutical formulations for the treatment of fungal infections affecting the skin, mucous membranes, and nails. Its mechanism involves inhibition of ergosterol synthesis, a vital component of fungal cell membranes, leading to increased cell permeability and fungal cell death. BP2000 indicates compliance with British Pharmacopoeia standards ensuring high purity and consistent quality suitable for pharmaceutical applications.
Melamine
Melamine is an organic compound widely used as a raw material in the production of melamine-formaldehyde resins, laminates, adhesives, coatings, and flame retardants. It offers excellent hardness, thermal stability, and chemical resistance. Supplied in 25kg bags, melamine is a white crystalline powder with high nitrogen content, making it a valuable additive in plastics, construction materials, and surface treatments.
Potassium Nitrate
Potassium Nitrate is a white crystalline salt commonly known as saltpeter. It is a key oxidizing agent widely used in fertilizers, food preservation, pyrotechnics, and chemical manufacturing. Potassium Nitrate provides essential potassium and nitrogen nutrients in agriculture and acts as a source of oxygen in combustion reactions. Its stability and solubility make it valuable across various industries from agriculture to explosives.

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