Chromic Potassium Sulphate Dodecahydrate AR 500g
Chromium Potassium Sulphate Dodecahydrate AR, also known as Chrome Alum, is primarily used as a reagent in analytical chemistry, as a mordant in dyeing and tanning, and in some photographic processes. Its analytical reagent (AR) grade indicates high purity suitable for precise scientific applications.
Here’s a more detailed breakdown of its uses:
1. Analytical Chemistry:
- It’s used as a reagent in various laboratory applications, including the preparation of chromium standard solutions.
- It can be used in the determination of sulfur.
- It can be used as a fixative in microscopic analysis.
2. Dyeing and Tanning:
- It acts as a mordant, helping dyes bind to fabrics and leather.
- It is used in the tanning of leather, where it stabilizes the collagen fibers.
3. Other Applications:
- It’s used as a photographic film hardener.
- It can be used in trivalent chromium plating and passivation solutions.
- It may be used in the manufacturing of chromium-containing catalysts.
- It can be used as a cross-linking agent for fracturing fluid in oil production.
- It has been used in the past as a food additive, though this application is less common now.
4. Chemical Properties:
- It’s a crystalline solid that is soluble in water.
- Aqueous solutions are purple-red when cool and turn green when heated.
- It can be weathered in dry air.
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