Product

Liquid helium cryogenic container/Dewar, cryogenically liquefied

cryogenically liquefied
Purity
Descriptions Liquid helium cryogenic container/Dewar
Delivery formats Vacuum-insulated LHe transport containers (Dewars)
Cylinders/container volumes 100 l 60 l
Content Content (kg) 11,5 7

Properties asphyxiant , see saftey data sheet
Valve connection plant specific
Shoulder colour none, proper transport marking in accordance with ADR

Conversions

m3 kg l liquefied
1 at 288.15 K (15°C); 1 bar 1,000 0,167 1,336
1 kg 5,988 1,000 8,001
1 l liquid at T boiling point; 1 bar 0,748 0,125 1,000

Other delivery formats

on request ; Alumini® 12, 200 Helium 5.0 ; in trailer: Helium 4.6 ; in steel cylinders and bundles: Helium 4.6, 5.0, 5.5, 6.0, ECD, Protadur® E 939, balloon gas, Secudur® He ; in steel cylinders and bundles: Helium 4.6, 5.0, 5.5, 6.0, ECD, Protadur® E 939, Secudur® He ; in 300 bar technology: Helium 4.6, 5.0 and 6.0

Provision and service are individually tailored to requirement.
Provision and service are individually tailored to requirement.
Where larger quantities of helium are required we can arrange delivery via 41.000 l ISO container.
Where larger quantities of helium are required we can arrange delivery via 41.000 l ISO container.

Physical Data

Molar mass 4,00 g mol-1
Liquid State
Boiling Point 4,22 (-268,9) K (°C)
Heat of Evaporation 20,42 kJ kg-1
Liquid Density 125 kg m-3
Gaseous state
Density (at 273.15 K and 1.013 bar) 0,18 kg m-3
Density Ratio to Air (at 288.15 K and 1.013 bar) 0,14
Specific heat (at 298.15 K and 1.013 bar) 5,20 kJ kg-1 K-1
Thermal Conductivity (at 288.15 K and 1.013 bar) 0,1482 J s-1 m-1 K-1
Critical Point
Temperature 5,2 (-268,0) K (°C)
Pressure 2,28 bar
Density 69,6 kg m-3
Triple Point
Temperature 2,177 (-271,0) K (°C)
Vapour Pressure 0,051 bar
Heat of Fusion 3,49 kJ kg-1
Additional operating figures
Ignition Point -- K (°C)
Ignition Range in Air -- vol.%
Calorific Value to DIN 51850 -- kJ kg-3

Triple point: upper lambda-point

Triple point: upper lambda-point

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