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Helium

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Helium / CAS : 7440-59-7

Appearance gas UN 1046
HS 2804290090 DG Class 2.2
Synonyms Hydrogen And Helium; Hydrogen-Helium; Leak Detection Standard Ld-3; Atomichelium; He; Helium,Compressed; Primarily Commercial Liquefaction Plants
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Properties

Summary

Formula
He
Molecular Mass
4.00260
Exact Mass
4.00260
PSA
0.00000
Logp
0.00000
IUPAC
helium
SMILES
[He]

Attribute classification

Matter Classification
inorganic
Category
Inorganic Chemicals > Carbide

Chemical and Physical Properties

Melting Point
-272.2ºC(lit.)
Density
0.1785（0ºC）
Boiling Point
-268.934ºC(lit.)
Flash Point
none
Appearance
gas

Export information

HS Code
2804290090
Export Rebate
0
UN No.
1046
DG-Class
2.2
Risk Code
R9

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