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Merck
CN

00488

Sigma-Aldrich

Helium

≥99.999%

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关于此项目

经验公式(希尔记法):
He
化学文摘社编号:
分子量:
4.00
EC 号:
MDL编号:
UNSPSC代码:
12142100
PubChem化学物质编号:
NACRES:
NA.22
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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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历史批次信息供参考:

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
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
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
Zoltán Pálinkás et al.
British journal of pharmacology, 172(6), 1516-1532 (2014-05-16)
The actions of hydrogen sulfide in human physiology have been extensively studied and, although it is an essential mediator of many biological functions, the underlying molecular mechanisms of its actions are ill-defined. To elucidate the roles of sulfide in inflammation
Andrea S Terpstra et al.
Chemical communications (Cambridge, England), 49(16), 1645-1647 (2013-01-24)
Helium ion microscopy (HIM) has been used to image mesoporous silica and organosilica for the first time. Images of chiral nematic silica, ethylenesilica, and new benzenesilica reveal the structural organization, pore dimensions and connectivity of these materials on the nanometer

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