Technical Information
Chemical SymbolHe
Specific Volume96.71 scf/lb
CAS Number7440-59-7
Molecular Weight4.003
Boiling Point-452.07 °F

 

 

Shipping Information
UD DOT NameHelium
Hazard Class2.2
LabelNon-Flammable Gas
I.D. NumberUN 1046
 

 

 

GradeHelium 6.0
Part NumberHE X-6.0
Impurities
Oxygen < 0.2 ppm
Moisture < 0.2 ppm
Total Hydrocarbons < 0.1 ppm
Carbon Monoxide < 0.1 ppm
Carbon Dioxide < 0.1 ppm
Nitrogen < 0.5 ppm

*X represents cylinder size

 

GradeHelium 5.5
Part NumberHE X-5.5
Impurities
Oxygen < 1 ppm
Moisture < 1 ppm
Total Hydrocarbons < 0.5 ppm
Carbon Monoxide < 0.5 ppm
Carbon Dioxide < 0.5 ppm
Nitrogen < 3 ppm

*X represents cylinder size

 

GradeHelium 5.0
Part NumberHE X-5.0
Impurities
Oxygen < 1 ppm
Moisture < 1 ppm
Total Hydrocarbons < 0.5 ppm
Carbon Monoxide -
Carbon Dioxide -
Nitrogen -

*X represents cylinder size

 

GradeHelium 4.8
Part NumberHE X-4.8
Impurities
Oxygen -
Moisture -
Total Hydrocarbons < 0.5 ppm
Carbon Monoxide -
Carbon Dioxide -
Nitrogen -

*X represents cylinder size

 

GradeHelium 4.7
Part NumberHE X-4.7
Impurities
Oxygen < 5 ppm
Moisture < 5 ppm
Total Hydrocarbons -
Carbon Monoxide -
Carbon Dioxide -
Nitrogen -

*X represents cylinder size

 

Standard Cylinder SizeContents (ft3)Pressure (psig)CGA Connection
T2912640580
K2182200580
A11352015580

 

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