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Merck
CN

00488

Sigma-Aldrich

Helium

≥99.999%

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About This Item

经验公式(希尔记法):
He
CAS号:
分子量:
4.00
EC 号:
MDL编号:
UNSPSC代码:
12142100
PubChem化学物质编号:
NACRES:
NA.22

蒸汽密度

0.14 (vs air)

质量水平

方案

≥99.999%

沸点

-268.934 °C (lit.)
−268.9 °C (lit.)

mp

-272.2 °C (lit.)

SMILES字符串

[He]

InChI

1S/He

InChI key

SWQJXJOGLNCZEY-UHFFFAOYSA-N

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包装

Pressure tin
Filling pressure at 15°C: 11 Bar; content 15°C, 1 bar): 11 l

其他说明

可能实行销售限制

象形图

Gas cylinder

警示用语:

Warning

危险声明

预防措施声明

危险分类

Press. Gas Compr. Gas

储存分类代码

2A - Gases

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves

法规信息

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从最新的版本中选择一种:

分析证书(COA)

Lot/Batch Number

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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
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
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

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