00488
Helium
≥99.999%
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About This Item
Empirical Formula (Hill Notation):
He
CAS Number:
Molecular Weight:
4.00
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12142100
EC Number:
231-168-5
MDL number:
InChI key
SWQJXJOGLNCZEY-UHFFFAOYSA-N
InChI
1S/He
SMILES string
[He]
vapor density
0.14 (vs air)
assay
≥99.999%
bp
-268.934 °C (lit.), −268.9 °C (lit.)
mp
-272.2 °C (lit.)
Quality Level
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Packaging
Pressure tin
Filling pressure at 15°C: 11 Bar; content 15°C, 1 bar): 11 l
Filling pressure at 15°C: 11 Bar; content 15°C, 1 bar): 11 l
Other Notes
Sales restrictions may apply
signalword
Warning
hcodes
pcodes
Hazard Classifications
Press. Gas Compr. Gas
Storage Class
2A - Gases
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves
Regulatory Information
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Paul W Dunk et al.
Nature communications, 5, 5844-5844 (2014-12-20)
An understanding of chemical formation mechanisms is essential to achieve effective yields and targeted products. One of the most challenging endeavors is synthesis of molecular nanocarbon. Endohedral metallofullerenes are of particular interest because of their unique properties that offer promise
Jessica N Fitzsimmons et al.
Proceedings of the National Academy of Sciences of the United States of America, 111(47), 16654-16661 (2014-10-29)
Until recently, hydrothermal vents were not considered to be an important source to the marine dissolved Fe (dFe) inventory because hydrothermal Fe was believed to precipitate quantitatively near the vent site. Based on recent abyssal dFe enrichments near hydrothermal vents
Gergely Albu et al.
Anesthesiology, 119(1), 101-110 (2013-04-11)
Effective lung volume (ELV) for gas exchange is a new measure that could be used as a real-time guide during controlled mechanical ventilation. The authors established the relationships of ELV to static end-expiratory lung volume (EELV) with varying levels of
Mina M Chowdhury et al.
Pediatrics, 131(4), 661-669 (2013-03-20)
Supportive care remains the mainstay of therapy in bronchiolitis. Earlier studies suggest that helium-oxygen therapy may be beneficial, but evidence is limited. We aimed to compare efficacy of 2 treatment gases, Heliox and Airox (21% oxygen + 79% helium or
T E Corcoran et al.
Journal of aerosol medicine : the official journal of the International Society for Aerosols in Medicine, 17(4), 299-309 (2005-02-03)
Aerosol drug delivery using helium-oxygen gas mixtures (heliox) is considered in terms of flow physics, atomization, and aerosol mechanics. Theoretical considerations are then related to past studies of the physiological effects of the inhalation of heliox and its potential use
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