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Sodium Thiosulphate ( Thiosulfate ) - 1000

Sodium Thiosulphate ( Thiosulfate ) - 1000
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Gross price: €7.95
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7.95
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Net price: €6.46
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Vendor: SYNTHETIKA
Product code: 231141068
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Description

Sodium Thiosulphate

Other Names: Thiosulfate, sodium hyposulfite
CAS Number: 7772-98-7
Sum Formula: Na₂S₂O₃
Molar Mass: 158.11 g/mol
Appearance: White, crystalline powder or colorless crystals

Chemical and Physical Properties

  • Density: ~1.67 g/cm³

  • Melting Point: 48.3°C (for pentahydrate, Na₂S₂O₃·5H₂O)

  • Boiling Point: Decomposes before boiling

  • Solubility in Water: Highly soluble (70 g/100 mL at 20°C for pentahydrate)

  • Solubility in Other Solvents: Slightly soluble in ethanol

  • Odor: Odorless

Applications

  • Photographic Processing: Used in traditional photography as a fixer to dissolve unreacted silver halides

  • Analytical Chemistry: Acts as a titrant in iodometric analysis

  • Water Treatment: Dechlorinates tap water and neutralizes bleach

  • Gold and Silver Recovery: Involved in leaching and refining processes

  • Chemical Reagent: Used in laboratories for various redox reactions

⚠️ This compound is not intended for pharmaceutical or food-related applications.

Safety

GHS Hazard Statements

 

Not Classified

Handling and Storage

  • Storage Conditions: Store in a cool, dry, well-ventilated area away from strong acids and oxidizing agents

  • Handling Precautions: Avoid dust formation. Use appropriate protective equipment. Store tightly sealed to prevent moisture absorption

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