Ground alum, also known as aluminum potassium sulfate or simply alum, is a chemical compound that is commonly used for a variety of purposes. It has a crystalline appearance and is soluble in water.
Here are some common uses of ground alum:
- Food preservation: Commonly used as a food preservative, particularly for pickling and preserving fruits and vegetables. It helps to keep the food crisp and firm by inhibiting the growth of bacteria and fungi.
- Water treatment: Used in water treatment plants to purify water by removing impurities and suspended particles. It works by causing the particles to clump together and settle to the bottom of the treatment tank, making it easier to remove them.
It is important to note that while ground alum has many useful applications, it should be handled with care, as it can be toxic if ingested in large quantities. It is also important to follow recommended safety guidelines when handling alum, as it can be a skin and eye irritant.
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