Air
Overview
Air is available as synthetic air or compressed air. Synthetic air is often used is as a zero gas in environmental monitoring and test equipment. Synthetic air can also be used in laboratory research and development. Regular ambient air can also be compressed for a variety of applications where high purity is not critical.
TEchnical Information
| Formula | -- |
| Molecular Weight (lb/mol) | 328.96 |
| Critical Temp. (°F) | N/A |
| Critical Pressure (psia) | N/A |
| Boiling Point (°F) | -317.8 |
| Melting Point (°F) | N/A |
| Gas Density @ 70°F 1 atm (lb/ft3) | 0.075 |
| Specific Volume @ 70°F 1 atm (ft3/lb) | 13.3 |
| Specific Gravity | 1.00 |
| Specific Heat @ 70°F (Btu/lbmol-°F) | 6.96 |
Air Uses and Applications
- Pneumatics, the use of pressurized gases to do work
- Pneumatic post, using capsules to move paper and small goods through tubes.
- Air tools
- HVAC control systems
- Vehicle propulsion
- Energy storage
- Air brakes, including:
- railway braking systems
- road vehicle braking systems
- Underwater diving, for breathing and to inflate buoyancy devices
- Refrigeration using a vortex tube
- Air-start systems in engines
- Ammunition propulsion in:
- Air guns
- Airsoft equipment
- Paintball equipment
- Cleaning dust and small debris in tiny spaces
- Sandblasting in machine shops
- Injection molding
- Food and beverage capping and fermentation
Air Transportation Information
| Proper Shipping Name | ID Number | Hazard Class or Division | Packing Group | Labeling Requirements | Passenger Aircraft or Railcar Quantity Limitations | Cargo Aircraft Only Quantity Limitations | Additional Shipping Description |
|---|---|---|---|---|---|---|---|
| Air, compressed | UN1002 | 2.2 | Not applicable | 2.2 | Not available | Not available | Not available |
| Compressed gas, n.o.s. (Nitrogen, Oxygen) | UN1956 | 2.2 | -- | -- | -- | -- | -- |
Air Packaging Options
Air Purity Grades
| Air: Synthetic Grade | 20%-22% Oxygen 78%-80% Nitrogen |
| Air: Compressed Grade | 19.5%-23.5% Oxygen 76.5%-80.5% Nitrogen |