Potassium iodide (KI)

Preparation of Potassium iodide:

• Potassium iodide can be prepared through the reaction of potassium hydroxide (KOH) with iodine (I₂).
• The chemical reaction is as follows:

Properties Potassium iodide:

• Physical Appearance: White crystalline solid.
• Solubility: Soluble in water, with a slightly bitter, saline taste.
• Nature: Ionic compound.
• Melting Point: 681°C (1258°F).
• Stability: Relatively stable but can undergo oxidation in the presence of air and moisture, turning yellow due to the liberation of iodine.

Uses

1. Nutritional Supplement: Used to prevent iodine deficiency and associated conditions, such as goitre and hypothyroidism.
2. Medical Use: Acts as a protective agent against radioactive iodine exposure, particularly in the case of nuclear accidents.
3. Skin Treatment: Used in the treatment of certain skin conditions, such as sporotrichosis and erythema nodosum.
4. Photographic Industry: Serves as a component of some photographic chemicals and developers.

Storage

• Conditions: Should be stored in a cool, dry place, away from heat and direct sunlight.
• Container: Keep in a tightly closed container to minimize exposure to air and moisture.
• Avoid Contact: Store away from strong oxidizing agents and acids to prevent chemical reactions.

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