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Nitrogen (N2):
Physical Properties:
| Molecular Weight |
28.014 kg/kmol |
| Critical Temperature |
-147.0 C |
| Critical Pressure |
34.0 bar |
| Boiling point at 1.013 bar |
-195.8 C |
| Gas density at 1.013 bar |
1.185 kg/m3 |
| Relative gas density to air = 1 |
0.967 |
| Compressibility at 1.013 bar |
1.00 |
Cylinder
Data:
| Colour |
body - French
grey
shoulder - black |
| Valve |
right hand - conforming to IS 3224 |
| Water capacity |
47 / 50 ltrs. (standard) |
Gas
Specifications:
| GRADE |
MAXIMUM LEVEL OF CRITICAL IMPURITIES (PPM BY VOLUME) |
|
O2 |
H2O |
THC |
Ar |
CO + CO2 |
| Nitrogen SPL |
1.0 |
1.0 |
0.5 |
5 |
ND |
| Nitrogen I |
2.0 |
2.0 |
0.5 |
5 |
ND |
| Nitrogen II |
4.0 |
4.0 |
1.0 |
10 |
0.5 |
Some
typical applications:
- Carrier gas in gas chromatography
- Zero gas in analytical
instruments
- For blanketing, inerting and
purging
- As a reducing gas to provide
and oxygen free atmosphere
- Freezing and packaging of
food.
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