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Helium (He) is the second-lightest element (hydrogen being the lightest) has a gaseous specific gravity of 0.138. It’s a colorless, odorless, tasteless inert gas at room temperature and atmospheric pressure. Its boiling point is –452.1°F
(268.9°C) at atmospheric pressure.
Helium is widely used as an inert gas in the arc welding process. And because of its low specific gravity and no flammability, it’s often used in lighter-than-air applications such as the filling of balloons and blimps. Mixtures of helium and oxygen are used as a breathing gas in deep-sea diving. Liquid helium is also used in superconducting magnet applications, including magnetic resonance imaging (MRI). |
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Product Specification |
Helium (He):
Physical Properties:
Molecular Weight |
4.00 kg/kmol |
Critical Temperature |
-267.95 C |
Critical Pressure |
2.275 bar |
Boiling point at 1.013 bar |
-268.93 C |
Gas density at 1.013 bar |
0.167 kg/m3 |
Relative gas density to air = 1 |
0.138 |
Specific Volume |
6.061 m3/kg |
Hazards & transportation:
Major Hazard |
High pressure and suffocation |
Toxicity |
Nontoxic |
Fire Potential |
Nonflammable |
Odour |
None |
DOTE Name |
Helium |
DOT Label |
Nonflammable Gas |
Identification No: |
UN-1046 ( Compressed Gas) |
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UN-1963 ( Refrigerated liquid ) |
Hazard Class/ Division |
2.2 |
Cylinder Data:
Colour |
body - black with shoulder yellow |
Valve |
CGA580 |
Water capacity |
42 liters. (standard) |
Contents |
6.0 m3 |
Filling Pressure at 21°C, |
138 bar |
Gas Specifications:
GRADE |
MAXIMUM LEVEL OF CRITICAL IMPURITIES (PPM BY VOLUME) |
Helium |
O2 |
H2O |
THC |
N2 |
CO + CO2 |
Ind.Grade Purity:99.997% |
3.0 |
3.0 |
0.5 |
10 |
ND |
High Purity Grade:99.999% |
2.0 |
2.0 |
0.5 |
5 |
ND |
Some typical applications:
- Carrier gas in gas chromatography
- Medical
- Welding
- AD- balloon, AD- Airplane
- Chemical use
- Sea diving
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