helium

Suppliers

Names

[ CAS No. ]:
7440-59-7

[ Name ]:
helium

[Synonym ]:
EINECS 231-168-5
helium
MFCD00011031

Chemical & Physical Properties

[ Density]:
0.1785（0ºC）

[ Boiling Point ]:
-268.934ºC(lit.)

[ Melting Point ]:
-272.2ºC(lit.)

[ Molecular Formula ]:
He

[ Molecular Weight ]:
4.00260

[ Flash Point ]:
none

[ Exact Mass ]:
4.00260

[ Vapour density ]:
0.14 (vs air)

[ Stability ]:
Stable; extremely unreactive.

MSDS

Click to get detail MSDS

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
MH6520000
CHEMICAL NAME :
Helium
CAS REGISTRY NUMBER :
7440-59-7
LAST UPDATED :
199712
DATA ITEMS CITED :
15
MOLECULAR FORMULA :
He

Safety Information

[ Risk Phrases ]:
R9

[ Safety Phrases ]:
S9

[ RIDADR ]:
UN 1046

[ WGK Germany ]:
3

[ RTECS ]:
MH6520000

[ Hazard Class ]:
2.2

[ HS Code ]:
2804290000

Customs

[ HS Code ]: 2804290000

Related Compounds

  • Helium
  • helium
  • helium-3
  • helium(•1+)
  • helium,neon
  • helium,xenon
  • N-(8-chloro-2,3,4,9-tetrahydro-1H-carbazol-1-yl)pyrazine-2-carboxamide
  • 2-Fluoro-N-(hex-5-en-2-yl)aniline
  • 5-oxo-N-{5-[1-(propan-2-yl)-1H-benzimidazol-2-yl]pentyl}-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxamide
  • 5-(Aminomethyl)-2-(dimethylamino)phenol
  • N-[5-(1-methyl-1H-benzimidazol-2-yl)pentyl]-2-(4-oxo-1,2,3-benzotriazin-3(4H)-yl)acetamide
  • N-{[1-(propan-2-yl)-1H-benzimidazol-2-yl]methyl}-2-[4-(1H-pyrrol-1-yl)tetrahydro-2H-thiopyran-4-yl]acetamide
  • N-(5-chloro-2-hydroxyphenyl)-1-[2-(2-methoxyphenoxy)ethyl]-5-oxopyrrolidine-3-carboxamide
  • 5-bromo-N-[2-(1-methyl-1H-benzimidazol-2-yl)ethyl]-2-(1H-tetrazol-1-yl)benzamide
  • N-(3-([1,2,4]triazolo[4,3-a]pyridin-3-yl)propyl)-1,4,5,6,7,8-hexahydrocyclohepta[c]pyrazole-3-carboxamide
  • N-[1-(2-methylpropyl)-1H-indol-4-yl]-2-(5-methyl-1H-tetrazol-1-yl)benzamide
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