Aluminum hydroxide powder has several applications, primarily in the fields of medicine, industry, and chemistry. Here are the main uses:

### 1. **Antacid in Medicine**

* **Primary Use**: Aluminum hydroxide is commonly used as an antacid to neutralize stomach acid and treat conditions like heartburn, indigestion, and gastric ulcers.

* **How it Works**: It reacts with the hydrochloric acid in the stomach to form aluminum chloride and water, helping to reduce acidity.

### 2. **Vaccine Adjuvant**

* **In Vaccines**: Aluminum hydroxide is used as an adjuvant in some vaccines. It enhances the body’s immune response to the antigen, making the vaccine more effective.

### 3. **Water Purification**

* **Flocculant**: It is used in water treatment processes to clarify water. Aluminum hydroxide helps remove impurities by forming flocs (clusters of particles) that settle out of the water.

### 4. **Fire Retardant**

* **Flame Retardant Additive**: Aluminum hydroxide is used in various materials, such as plastics, rubber, and textiles, as a flame retardant. When heated, it decomposes to produce water vapor, which helps to suppress fires.

### 5. **Chemistry & Industrial Applications**

* **Precursor to Aluminum Compounds**: It is a key intermediate in the production of aluminum metal and other aluminum compounds (such as alumina).

* **Catalysis and Synthesis**: Aluminum hydroxide can be used in chemical reactions as a catalyst or in the synthesis of other chemicals.

### 6. **Cosmetics and Personal Care Products**

* **Skin Care**: In some formulations, aluminum hydroxide is used in products like deodorants and as an ingredient in cosmetics. It helps to provide a smoother texture and may also serve as a mild abrasive in exfoliating products.

### 7. **Paper Industry**

* **Filler Material**: In the paper industry, aluminum hydroxide is used as a filler material to improve paper quality, enhance opacity, and reduce cost.

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