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Question : 42 of 100
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Solution:
- Potash alum is a combination of double sulphate of potash and aluminium salts.
- Its chemical formula is
- Potash alum is also known as an astringent.
- Astringents are substances that cause contraction or shrinkage of tissues and that dry up secretion.
- Used as a post-shaving treatment, it can eliminate bleeding from superficial wounds.
- It has also shown in vitro anti-microbial activity.
- The alum used for purifying water is known as potash alum.
- Potash alum is generally used in water purification, fireproof textiles etc. It is also used in leather tanning.
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