Helium-3, 3He.
Chemical Purity ≥99.9995%
Isotopic Enrichment ≥99.9 atom%
He is the very rare stable isotope of ordinary helium. All 3He produced today comes from the slow degradation of the
radioisotope tritium, 3He is principally shipped and used in gaseous form in neutron detectors, spectrometers, medical
imaging, ring lasers, dilution refrigerators, and ultra low temperature physics research. Helium-3 is an odorless,
colorless, and tasteless high pressure gas.
3
Physical and chemical properties
Chemical purity
Isotopic enrichment 3He atomic fraction (%)
Molecular weight
Gas density @ 21.1°C (70°F) (“NTP”):
@ 0°C (“stp”):
Boiling point @ 1 atm
Freezing/Melting point @ 1 atm:
Solubility in water vol/vol at 20°c (68°F) and 1 atm:
Gas Density
Critical pressure:
Coefficient water/Oil distribution:
Odor threshold:
Appearance, odor and state:
≥99.9995% Total impurities as specified below ≤5ppm
≥99.9 Atom%
3.016g/mol
0.0078 Lb/ft3 (0.125 Kg/m3) (0.125 G/ltr)
0.0084 Lb/ft3 (0.135 Kg/m3) (0.135 G/ltr)
-269.96°C
None
8.61 M3/1 kg water
0.125g/L
-2.7 Psia (0.186 Bar)
Not applicable
Helium-3 is odorless
Colorless, odorless gas
Chemical Purity
COMPONENT
Oxygen (ppm)
Nitrogen (ppm)
Carbon Dioxide (ppm)
Carbon Monoxide (ppm)
Argon (ppm)
Water (ppm)
Activity (uCi/cc)
Specifications (mole/mole)
≤1
≤1
≤0.5
≤1
≤0.5
≤0.1
≤1.3 x 10-7
3 Helium-3, 3He.
Water Volume
0.42L
1.45L
3L
8L
U.S. Shipping information
U.S. Dot proper shipping name
Hazard class number and description:
UN identification number:
U.S. DOT shipping label(s) required:
CAS number
Maximum Gas Contained
50L
200L
400L
1100L
Helium, compressed
2.2 (Non-flammable gas)
UN 1046
Non-flammable gas
7440-59-7
Linde Electronics and Specialty Gases
One Greenwich Street, Suite 100, Stewartsville, NJ 08886
Phone +1.908.329-9700 or +1.800.932-0624, Fax +1.908.329-9740, www.lindeus.com
Linde North America Inc. is a member of The Linde Group. Linde is a trading name used by companies within the Linde Group. The Linde logo is a trademark of The Linde Group. © The Linde Group 2012.
1846_1012
Cylinder Specifications
Size
Lecture Bottle (Linde 2)
6 (Linde 6)
5 (Linde 10)
4 (Linde 30)
2 of 2