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Catalog No. EBD3316596
CAS 7440-59-7
Name Helium
Synonyms: 氦气 氦气 氦[压缩的或液化的]
Molecular Formula: He
Molecular Weight: 400.0
Melting Point: -272.2 °C(lit.)
Boiling Point: -268.934 °C(lit.)
Flash Point: none
Density: 0.14 (vs air)
Solubility: Soluble in water 0.86 ml/100 ml at 20ºC
Packing Level:
Hazard Category: 2.2
Transport Codes: 1046
Appearance: COLOURLESS, ODOURLESS, REFRIGERATED, LIQUEFIED GAS