Helium. Compressed Gases Data Sheet.
Helium
Helium is a noble gas (sometimes called a rare gas), with atomic number 2. It is produced naturally via the
alpha-decay of radioactive minerals such as uranium and thorium, at an estimated rate of 3,000 metric
tonnes per year, throughout the lithosphere. It exists in the atmosphere at a volumetric concentration of
approximately 5.2 ppm.
Being one of the lightest gases available, the upper heterosphere is comprised mostly of helium. This exposure
to open space results in most atmospheric helium being released into space with a loss of the molecule.
Specifications
BOC Material Code
He
H2O
O2
N2
Cylinder Size - Pressure
Physical Properties
Dangerous Goods
Information
Compatibility
Ultra High Purity
High Purity
220
≥99.999%
<2 ppm
<2 ppm
<4 ppm
D, E, G, JAY15 – 165 bar
G2, MAN15, MCP9 – 200 bar
COP16 – 300 bar
820
≥99.99%
<15 ppm
<10 ppm
–
D, E, G, F9, COP16, MAN15 – 165 bar
JAY15, MCP15 – 200 bar
DIV64 – 300 bar
Property
Value
CAS Registry Number
Atomic Weight
Boiling Point (at 1.013 bar)
Density (at 1.013 bar, 15°C)
Vapour Pressure, 0°C
Vapour Pressure, 20°C
Flammability in air (% volume)
Specific Volume (at 1.013 bar, 15°C)
7440-59-7
4.003 g/mol
-268.93°C / 4.22 K
0.169 kg/m3
–
–
Non-combustible
5.92 m3/kg
UN Number
1046
HELIUM, COMPRESSED
Dangerous Goods Class
2.2
Legend: ✓ Good, ● Fair, ✕ Avoid
✓
✓
✓
✓
✓
Aluminium
Buna® N
Brass
Butyl rubber
Carbon steel
✓
✓
✓
✓
✓
Copper
Kel-F®
Monel®
Neoprene®
Nylon®
✓
✓
✓
✓
✓
Polyethylene
PVC
Stainless steel
Teflon®
Viton®
Industries
Auto
Chem
Energy
Food
Manuf
Medical
Metal
OEM
Petrol
Pharma
R & D
Semi
2 of 2
→ Helium. Compressed Gases Data Sheet.
Recommended
Cylinder Regulator
BASELINE®
Single Stage
Dual Stage
Applications
Max. Outlet Pressure
Bar
psi
1
15
3.5
50
7
100
10.5
150
17
250
35
500
1
15
3.5
50
7
100
10.5
150
17
250
Outlet
Product Code
Brass
Stainless Steel
1/4”
1/8”
1/4”
1/8”
1/4”
1/8”
1/4”
1/8”
1/4”
1/8”
1/4”
1/8”
1/4”
1/8”
1/4”
1/8”
1/4”
1/8”
1/4”
1/8”
1/4”
1/8”
S5724-516-255
M5724-515-255
S5725-516-255
M5725-515-255
M5726-516-255
M5726-515-255
S5727-516-255
M5727-515-255
M5728-516-255
M5728-515-255
M5729-516-255
M5729-515-255
S5628-516-255
M5628-515-255
S5629-516-255
M5629-515-255
M5630-516-255
M5630-515-255
S5631-516-255
M5631-515-255
S5632-516-255
M5632-515-255
M5730-507-255
M5730-506-255
M5731-507-255
M5731-506-255
M5732-507-255
M5732-506-255
M5733-507-255
M5733-506-255
M5734-507-255
M5734-506-255
M5735-507-255
M5735-506-255
M5633-507-255
M5633-506-255
M5634-507-255
M5634-506-255
M5635-507-255
M5635-506-255
M5636-507-255
M5636-506-255
M5637-507-255
M5637-506-255 Analytical
Consumer products
→→ Fill gases for nuclear counters
→→ Breathing gases for divers
→→ Filling electronic tubes such as neon tubes
→→ Filling of balloons
→→ Cosmic ray studies
→→ Flushing of Geiger counters
→→ Propellants in model firing tunnels
→→ Hypersonic wind tunnels
→→ Semiconductor processes
→→ Zero gas and balance gas in calibration mixtures
→→ Carrier gas in gas chromatography
→→ Purge gas and a zero gas for analytical instruments
→→ Epitaxial crystal growth
→→ Degassing in High Performance Liquid Chromatography (HPLC)
→→ Cooling of superconductive magnets in Nuclear Magnet Resonance (NMR)
→→ In research and development to study processes around absolute zero
→→ Overpressure gas for liquid hydrocarbon mixtures due to low solubility
© BOC Limited 2015.
BOC is a trading name of BOC Limited.
BOC Limited
ABN 95 000 029 729, 10 Julius Avenue, North Ryde NSW 2113, Australia, 1800 658 278, [email protected], www.boc.com.au
MP14-0163-1-8 | FDAUS | 0515
Manufacturing
→→ Pressurisation gas for:
– cryogenic rocket propellants in space/missile applications
– heavy water in nuclear reactors
– for all liquids at room or low temperatures
→→ Heat treatment applications requiring a protective atmosphere
→→ Shielding gas for arc welding
→→ Leak detection to test integrity of fabricated components and systems
→→ Cooling and shielding medium for the pulling of optical fibres
→→ Gas lasers
→→ Vacuum breaking in heat treatment furnaces
→→ Airbag inflating gas in high pressure capsules
→→ Creation of inert furnace atmospheres in processing of special glass and valuable metals