Description
Specifications Table
Product Name – Sodium thiosulfate pentahydrate, 99.999%, (trace metal basis) Quantity/Pack Size – 25GR, 100GR Form – Crystalline powder Grade – 99.999% (trace metal basis) Application – Redox titrations, iodine analysis, photography, analytical chemistry
Product Overview
Sodium thiosulfate pentahydrate (99.999% purity, trace metal basis) is a high-grade chemical compound designed for applications demanding ultra-low impurity levels. Its crystalline form dissolves readily in water, providing a stable and reliable reagent for redox reactions, particularly in iodine titrations where precision is critical. The trace metal basis certification ensures minimal interference from metallic contaminants, making it ideal for sensitive analytical procedures. This compound is also widely used in photography as a fixing agent due to its ability to dissolve unexposed silver halides. The pentahydrate form offers enhanced stability during storage, while the 99.999% purity guarantees consistent performance in quantitative analyses. Whether used in volumetric analysis or as a reducing agent, this sodium thiosulfate variant delivers reproducible results, reducing experimental errors. Its high solubility and neutral pH further contribute to its versatility in laboratory settings.
FAQs
1. What is the shelf life of sodium thiosulfate pentahydrate?
When stored in a tightly sealed container away from moisture and light, it remains stable for up to 2 years. Over time, exposure to air may lead to gradual oxidation.
2. Can this be used for iodine titration experiments?
Yes, the 99.999% purity and trace metal basis make it highly suitable for iodine titrations, ensuring accurate endpoints without interference from impurities.
3. Is this compound compatible with standard lab glassware?
It is fully compatible with borosilicate glass and most plastic labware. Avoid prolonged contact with metals to prevent contamination.
4. What alternatives exist for redox titrations?
Sodium sulfite or ascorbic acid can be used in some cases, but they lack the stability and precision of sodium thiosulfate pentahydrate for iodine-based reactions.
5. How should this chemical be disposed of?
Dilute with water and neutralize if necessary before disposal according to local environmental regulations. Avoid direct release into drains.
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