Sodium Thiosulphate Pentahydrate (Na₂S₂O₃·5H₂O), commonly known as Hypo, is a premium-quality laboratory reagent extensively used in analytical laboratories, educational institutions, research centers, pharmaceutical studies, environmental testing, and industrial applications. It is supplied as colorless crystalline granules or crystals with excellent water solubility and high chemical stability under recommended storage conditions.
This compound is widely recognized as a standard reagent in iodometric titrations, making it an essential chemical in analytical chemistry laboratories. It is also used in photographic processing as a fixing agent, water treatment processes for dechlorination, chemical synthesis, electroplating, textile processing, and quality control laboratories.
Our Laboratory Grade Sodium Thiosulphate Pentahydrate is manufactured under strict quality control standards to ensure high purity, consistent composition, and dependable analytical performance. Each batch is carefully tested and packed in moisture-resistant containers to preserve product quality during storage and transportation.
Whether used for routine laboratory analysis, research, educational experiments, or industrial processing, Sodium Thiosulphate Pentahydrate offers excellent reliability and accurate results.
Key Features
- High laboratory-grade purity
- Colorless crystalline compound
- Excellent water solubility
- Stable chemical composition
- Reliable analytical performance
- Ideal for iodometric titrations
- Low impurity content
- Moisture-resistant packaging
- Long shelf life
- Quality-tested for consistent results
| Parameter | Specification |
|---|---|
| Product Name | Sodium Thiosulphate Pentahydrate |
| Chemical Formula | Na₂S₂O₃·5H₂O |
| Molecular Weight | 248.18 g/mol |
| CAS Number | 10102-17-7 |
| Appearance | Colorless Crystalline Powder/Crystals |
| Odor | Odorless |
| Purity | Laboratory Grade / High Purity |
| Solubility | Freely Soluble in Water |
| pH (5% Solution) | Approximately 6.5–9.5 |
| Density | Approx. 1.67 g/cm³ |
| Melting Point | Approx. 48°C (Loses Water of Crystallization) |
| Shelf Life | 24 Months (Under Proper Storage) |
| Storage | Cool, Dry Place |
| Packaging | 100 g, 250 g, 500 g, 1 kg, 5 kg, 25 kg (Available on Request) |
| Grade | Laboratory Grade |
| Country of Origin | India |





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