Food Grade Gases
Nitrogen
Nitrogen
Characteristics
Nitrogen is colorless, odorless, tasteless and nontoxic in both its liquid and gaseous forms. It is inert under most conditions.
Grade
- High Purity > 99.999%
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Nitrogen is used as an inert gas especialy to create, in combination with hydrogen, a reductive atmosphere over the tin bath in the float glass process.
Industrial Use
- Liquid nitrogen is the mostly used cryogenic fluid, to chill, freeze or store food products. Gaseous nitrogen is commonly used in contact with foodstuffs to avoid oxidation or micro-organism growth by inerting of liquids. Modified Atmosphere Packaging (MAP) preserves and protects foods ( pure nitrogen or mixed with CO2).
Physical and Chemical Properties:
| Asphyxiant | Yes |
| Atmospheric % | 78% |
| Boiling Point | -196 °C |
| Category | Inert Gas |
| Chemical Abstracts Service Number | 7727-37-9 |
| Chemical Name | N2 |
| Critical Temperature | -147 °C |
| Flammability Range | Non Flammable |
| Melting Point | -210 °C |
| Molecular Weight | 28.0134 g/mol |
| Phase | Gas / Liquid |
| Relative Density, Gas | 0.97 (air = 1) |
| Solubility [mg/l] in Water | 20 mg/l |
| Toxic | No - Simple Asphyxiant |
| UN Number | 1066 - Gas, 1977 - Liquid |
cylinders
- 1m3 to 10m3
- In Racks - 1x16, 1x30 and 1x60
Bulk
- IMO7 ISO Tanks (20000 Liters)
Dewars
- 240 Liters