Sodium Thiosulphate

Product Description

Sodium Thiosulphate is an inorganic compound widely recognized for its chemical versatility and practical applications in various industries. Its molecular formula is a2S2O3Na2S2O3‹…5H2Na2S2O3Na_2S_2O_3Na2S2O3

• Molar Mass: 158.11 g/mol (anhydrous), 248.18 g/mol (pentahydrate)
• Appearance: Colorless or white crystalline solid
• Solubility: Highly soluble in water
• pH: Neutral to slightly alkaline in solution
• Melting Point: 48C (pentahydrate, with loss of water)

Applications of Sodium Thiosulphate

1. Photography

• Acts as a "fixer" in the photographic process.
• Dissolves unexposed silver halide crystals, stabilizing photographic images.

2. Medicine

• Detoxification Agent:
  • Used to treat cyanide poisoning by converting cyanide into the less toxic thiocyanate, which is excreted by the body.
• Dermatology: Applied in the treatment of fungal infections and some skin conditions like pityriasis versicolor.

3. Water Treatment

• Dechlorination:
  • Neutralizes chlorine and chloramines in drinking water and aquariums.
  • Prevents harmful effects on aquatic life.

4. Chemical Industries

• Reducing agent in various chemical syntheses.
• Used in iodometric titrations due to its ability to react with iodine.

5. Gold Extraction

• Plays a role in the gold leaching process as part of the alternative lixiviants used in place of cyanide.

6. Textile and Paper Industries

• Used as a bleaching agent and in dyeing processes.

Advantages of Sodium Thiosulphate

• Effective Reducing Agent: Excellent for neutralizing oxidative compounds.
• Non-Toxic: Relatively safe for use in controlled environments.
• Eco-Friendly Applications: Useful in environmental remediation efforts.

Storage and Handling

• Packaging: Available in bags or sealed containers.
• Storage Recommendations:
  • Store in a cool, dry place.
  • Protect from direct sunlight and moisture.
• Handling Precautions:
  • Use protective gloves and goggles.
  • Avoid inhalation of dust or ingestion.

Safety Precautions

• Hazards:
  • May cause mild irritation to skin and eyes.
  • Ingestion in large quantities may be harmful.
• First Aid:
  • In case of skin or eye contact, rinse thoroughly with water.
  • Seek medical attention if symptoms persist.

Conclusion

Sodium Thiosulphate is a versatile compound with a wide range of industrial, medical, and environmental applications. Its stability, efficiency, and safety make it a valuable chemical in processes that require reducing agents or neutralizing solutions.