HELlUM (He)

Helium

General

Helium is a highly inert gas found in nature in limited quantities. It is colourless, odourless, non-flammable & non-toxic. Liquid Helium is the coldest known substance with boiling point of -269 degree C. Special transportation and storage equipment is required for minimizing losses of the product.

Applications

Helium is the second element in the periodic table and owing to its nonflammable nature & lightweight, replaces Hydrogen in the metrological applications. Helium is used in numerous other applications in line with its highly inert & stable characteristics. Major applications are as under:

  • Magnetic Resonance Imaging (MRI)
  • Fibre Optics
  • Balloon Filling
  • Research & Development
  • Deep Sea Diving
  • Space Exploration
  • Analytical Applications
  • Leak Detection

Specifications

  Purity

Impurities

    Moisture Oxygen
Research Grade 99.9996% < 2 ppm < 0.5 ppm
Highly Purified 99.999% < 3 ppm < 1ppm
High Purity 99.95% < 2 ppm < 5 ppm
Balloon Grade 99.99% < 5 ppm < 8 ppm

Packing Details

  Capacity
 
Gas Contents
(m3 per unit)
Pressure
(bars)
Cylinders 40 L
50 L
6.0
10.0
150
200
Racks 12 cyl/rack
16 cyl/rack
54 cyl/rack
120.0
160.0
540.0
200
200
200

Conversion Factor

1Nm3=

0.17847kgs 0.3935 lb
0.3775 USG 1.4289 litres

Physical Constants

Molecular Weight 4.00
Boiling Point @ 1atm -452 Deg F (-268.9 deg C)
Freezing/Melting Point None
Specific Gravity 0.138
Flammability Limit Non Flammable
Autoignition Temperature Non Flammable

Transportation Information

DOT Hazard Class 2.2
DOT Identification Number UN 1046
DOT/IMO Name Helium, compressed
Shipping Label Non Flammable gas