Product Description
Magnesium hydroxide (Mg(OH) is a white, solid compound that is commonly used as a medication and in various industrial applications. Heres an overview of its key properties and uses:
Description:
- Chemical Formula: Mg(OH)
- Molecular Weight: 58.3 g/mol
- Appearance: White, odorless powder or suspension
- Solubility: Magnesium hydroxide is insoluble in water but slightly soluble in dilute acids, forming magnesium salts. Its solubility is very low, so it is typically used in suspension forms in pharmaceutical applications.
Common Uses:
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Antacid:
- Magnesium hydroxide is commonly used to treat heartburn, indigestion, and acid reflux. It neutralizes stomach acid, providing relief from acid-related discomfort.
- It is also used in combination with aluminum hydroxide in many antacid products, like Maalox and Mylanta.
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Laxative:
- Magnesium hydroxide can be used as a laxative. It works by drawing water into the intestines, which helps to soften stools and ease constipation.
- It is commonly found in over-the-counter products such as Milk of Magnesia.
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Water Treatment:
- Magnesium hydroxide is used in wastewater treatment to neutralize acidic water and as a flocculant to remove impurities.
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Industrial Uses:
- It is used as a fire retardant, especially in plastics and rubbers.
- It is also used in paper manufacturing and cosmetic formulations.
Chemical Properties:
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Alkaline Nature: Magnesium hydroxide is alkaline and can neutralize acids, making it effective as an antacid and a laxative.
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Decomposition: When heated, magnesium hydroxide decomposes to form magnesium oxide (MgO) and water:
Mg(OH)2MgO+H2O\text{Mg(OH)}_2 \rightarrow \text{MgO} + \text{H}_2\text{O}Mg(OH)2MgO+H2O
pH Level:
- The pH of magnesium hydroxide in aqueous suspension is typically about 10.5, making it alkaline.
- When used in antacid formulations, it helps neutralize the acid in the stomach, raising the pH and alleviating discomfort.
Side Effects and Considerations:
- Laxative Effect: While magnesium hydroxide can be an effective laxative, overuse can lead to diarrhea or dehydration.
- Kidney Function: People with kidney issues should use magnesium hydroxide cautiously, as the kidneys may not be able to process excess magnesium effectively.