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
  • (18aR)-1,18-Bis(diphenylphosphino)-6,7,8,9,10,11,12,13-octahydrodibenzo[b,d][1,6]dioxacyclotetradecine
  • (23-Diphenylphosphanyl-8,18-dioxatricyclo[17.4.0.02,7]tricosa-1(19),2(7),3,5,20,22-hexaen-3-yl)-diphenylphosphane
  • 2,7-Bis(diphenylphosphino)-9-phenyl-9H-carbazole
  • 4,6-Bis((3-chlorophenyl)(4-chlorophenyl)phosphino)phenoxathiine
  • 4,6-Bis(diphenylphosphino)-N-(3-(trihydroxysilyl)propyl)-10H-phenoxazine-10-carboxamide
  • N-((Dicyclohexylphosphino)(phenyl)methyl)-2,4,6-trimethylaniline
  • [1,1'-Biphenyl]-2-yl(4-(dimethylamino)phenyl)(methyl)phosphine oxide
  • N-(2-(Dicyclohexylphosphino)benzylidene)-2,6-diisopropylaniline
  • (1R)-(2'-(Dimethylamino)-5,5',6,6',7,7',8,8'-octahydro-[1,1'-binaphthalen]-2-yl)diphenylphosphine oxide
  • (1S,2S)-1-Phenyl-N-(o-tolyl)phosphinan-2-amine
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