Potash Alum (Potassium Aluminium Sulfate)

Preparation of Potash Alum:

• It is typically prepared by the reaction of aluminium sulphate with potassium sulphate:
  • Al2(SO4)3 + K2SO4 → 2KAl (SO4)2

Properties of Potash Alum:

• A colorless, odorless, crystalline compound.
• Soluble in water.
• Commonly found as a dodecahydrate (KAl(SO₄)₂·12H₂O), forming translucent, colorless crystals.

Uses

1. Astringent: Used in skin care products, mouthwashes, and aftershaves.
2. Water Purification: Acts as a coagulant to remove suspended particles.
3. Food Industry: Serves as a firming agent.
4. Dyeing and Textile Printing: Used as a mordant.
5. Traditional Medicine: Treats minor cuts and abrasions.

Storage

• Store in a cool, dry place, away from heat, moisture, and incompatible materials.
• Keep in a tightly closed container to prevent contact with air and moisture.

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