**Ammonium Hydrogen Phosphate (Diammonium Phosphate)**
**Chemical Name:** Ammonium hydrogen phosphate, also known as diammonium phosphate, secondary ammonium phosphate, or dibasic ammonium phosphate.
**Alternative Names:** Dibasic ammonium phosphate, diammonium phosphate.
**CAS Number:** 7783-28-0
**Molecular Formula:** NHâ‚„Hâ‚‚POâ‚„
**Molar Mass:** 132.06 g/mol
**Appearance:** A white crystalline powder with no distinct odor. It has a slightly salty taste.
**Properties:**
- **Thermal Stability:** Loses about 8% of its ammonia content when exposed to air.
- **Solubility:** Highly soluble in water. Solubility increases with temperature:
- In hot water: 1g per 1.7ml
- In cold water: 1g per 0.5ml
- Insoluble in ethanol.
- **pH:** Approximately 8 in aqueous solution.
- **Density:** 1.619 g/cm³.
**Applications:**
- Used in biochemical research for preparing buffers and culture media.
- Acts as a corrosion inhibitor and is used to precipitate metals such as magnesium, barium, nickel, and sodium.
- Serves as a raw material in the production of high-pressure mercury lamps and phosphors.
- Industrial applications include use as a feed additive, flame retardant, and fire extinguishing agent.
**Storage:** Store at room temperature (RT) in a cool, dry place, away from direct sunlight and moisture.
This compound is widely utilized across multiple industries due to its versatile chemical properties and stability. Its ability to act as a buffer and its solubility make it an essential component in many scientific and industrial processes. Always handle with care and follow proper safety guidelines when working with this substance.
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