Ammonia
Ammonia
Formula: NH3
CAS No: 7664-41-7
Ammonia (NH3) is a colorless, alkaline gas with a distinct, pungent odor. It serves as a critical feedstock in numerous industrial processes, including semiconductor and advanced materials manufacturing, where it is essential in Chemical Vapor Deposition (CVD) for the formation of silicon nitride layers.
Applications include:
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Deposition of silicon nitride layers in semiconductor manufacturing (CVD).
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Neutralization of acids in chemical processing and wastewater treatment.
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Surface treatment in metals, electronics, and specialty manufacturing.
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Refrigeration in food processing, cold storage, and ice production (R-717).
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Production of nitrogen-based chemicals, fertilizers, and specialty compounds.
Material Considerations
Ammonia is incompatible with copper, brass, and certain elastomers, which may degrade or fail in service. Material selection should focus on compatible metals and seal materials appropriate for ammonia systems.
EFC Gases & Advanced Materials supplies high-purity ammonia to meet the stringent quality demands of semiconductor, refrigeration, and industrial applications. Our rigorous analytical verification, controlled packaging, and secure logistics ensure consistent quality from production to point-of-use.
Applications
Specifications
Further Specifications
Cylinder Sizes
- Deposit silicon nitride layers in semiconductor manufacturing.
- Neutralize acids in chemical processing and wastewater treatment.
- Treat surfaces in metals, electronics, and specialty manufacturing.
- Refrigerate in food processing, cold storage, and ice production (R-717).
- Produce nitrogen-based chemicals, fertilizers, and specialty compounds.
| Grade 5 | Grade 5.5 | Grade 6.4 | |
|---|---|---|---|
| Purity | 99.999% | 99.9995% | 99.99994% |
| Nitrogen | < 5 ppmv | < 1.5 ppmv | |
| Oxygen | < 0.5 ppmv | (+Ar): <100 ppbv | |
| Carbon Monoxide | < 2 ppmv | < 0.1 ppmv | < 50 ppbv |
| Carbon Dioxide | < 0.4 ppmv | < 100 ppbv | |
| Hydrogen | < 100 ppbv | ||
| Methane | < 2 ppmv | < 0.1 ppmv | < 50 ppbv |
| Water | (+O2): < 5 ppmv | < 2 ppmv | < 200 ppbv |
| Chemical & Physical Properties | |
|---|---|
| Molecular Weight | 17.03 |
| Specific Volume | 22.6 cu. ft/lb |
| Pressure @ 70° F | 113.9 psig |
| Valve Outlet | CGA 660 DISS 720 |
| Shipping Information | |
|---|---|
| DOT Name | Ammonia |
| Hazard Class | 2.2 |
| DOT No. | UN 1005 |
| DOT Label | Non-Flammable Gas |
| CAS No. | 7664-41-7 |
| Cylinder Size | Fill Weight (lb) |
|---|---|
| 1 Ton | 500 |
| 49L/Size 300 | 55 |
| 44L/Size 200 | 50 |
Moisture level guaranteed only when EFC Gases & Advanced Materials prepares the cylinders.
All concentrations are on a mol/mol basis unless otherwise stated. Product sold on the basis of total impurities. Individual impurities may vary slightly.
