Ammonia
Azane, Hydrogen nitride
- CAS
- 7664-41-7
- EC
- 231-635-3
- Sectors
- Agriculture, Water & Wastewater Treatment, Textiles, Leather & Paper
Ammonia (CAS 7664-41-7) is a colorless inorganic nitrogen compound supplied as a technical grade liquid, valued for its high nitrogen content, and used to produce urea, ammonium nitrate and other nitrogen fertilizers, as an industrial refrigerant, and as a pH adjuster in water treatment and textile processing. It is highly soluble in water and forms ammonium hydroxide upon dissolution. Its high nitrogen content makes it a foundational compound for fertilizers, refrigerants, and numerous syntheses.
Typical Properties
| Molecular formula | H3N |
|---|---|
| Molecular weight | 17.03 g/mol |
| Form | Liquid |
| Color | Colorless |
| Odor | Intense pungent odor detectable at 17 ppm |
| Melting point | -77.7 °C |
| Boiling point | -33.35 °C |
| Density | 0.7 g/cm³ @ Temp: -33 °C |
| Water solubility | soluble |
| Flash point | 52 °F |
| pH | pKa1= 9.461(25°C) |
| GHS signal word | Danger · Flammable, Compressed gas, Corrosive, Acute toxicity, Irritant / harmful, Health hazard, Environmental hazard |
| HS code | 28141000 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Ammonia
Applications
Ammonia is primarily used for producing urea, ammonium nitrate, and other nitrogen fertilizers. It also functions as a refrigerant in industrial cooling systems, a pH adjuster, and a feedstock for nitric acid and amines. In water treatment and textiles, it aids in neutralization and cleaning processes.
Safety & Risks
Toxic and corrosive gas; contact with eyes or skin causes burns. Inhalation can be fatal at high concentrations. Use only in closed systems with ventilation, gas detection, and PPE.
Packaging
Delivered as anhydrous liquid in pressurized cylinders or tanks, or as aqueous ammonia in HDPE drums. Store in cool, isolated areas with secondary containment.