Helium

product Name	Helium
Molecular Formula	He
Molecular Weight	4.002602
InChI	InChI=1S/He
CAS Registry Number	71086-78-7;7440-59-7
EINECS	275-187-7
Molecular Structure
Density	0.1785（0℃）
Melting point	-272.3℃
Boiling point	-268.9℃

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