Helium
Names
[ CAS No. ]:
71086-78-7
[ Name ]:
Helium
Chemical & Physical Properties
[ Density]:
0.1785（0ºC）
[ Boiling Point ]:
-268.9ºC
[ Melting Point ]:
-272.3ºC
[ Molecular Formula ]:
He
[ Molecular Weight ]:
4.00260
[ Flash Point ]:
none
[ Exact Mass ]:
4.00260
Safety Information
[ RIDADR ]:
UN 1046