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Merck
CN

295345

Sigma-Aldrich

Helium

≥99.995%

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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:

蒸汽密度

0.14 (vs air)

质量水平

方案

≥99.995%

杂质

≤5 ppm oxygen
≤5 ppm water

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

Supplied in a carbon steel lecture bottle with a CGA180M/CGA110F needle valve installed.

Compatible with the following:
  • Aldrich® lecture-bottle station systems
  • Aldrich® lecture-bottle gas regulators

其他说明

法律信息

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC

吹扫阀

产品编号
说明
价格

软管倒钩

产品编号
说明
价格

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, multi-purpose combination respirator cartridge (US)

法规信息

新产品

从最新的版本中选择一种:

分析证书(COA)

Lot/Batch Number

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访问文档库

Frédéric Aitken et al.
Physical chemistry chemical physics : PCCP, 17(28), 18535-18540 (2015-06-26)
Positively charged helium clusters, also called 'snowballs', have been investigated within normal liquid helium. Thermodynamic state equations for ionic helium clusters in liquid helium have been developed, allowing us to discern the 'hydrodynamic' radius for a wide range of hydrostatic
Bo Zhang et al.
Bioresource technology, 189, 30-35 (2015-04-13)
In this study, catalytic fast co-pyrolysis (co-CFP) of corn stalk and food waste (FW) was carried out to produce aromatics using quantitative pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS), and ZSM-5 zeolite in the hydrogen form was employed as the catalyst. Co-CFP temperature
Khalid A Al-Hothaly et al.
Bioresource technology, 191, 117-123 (2015-05-20)
The microalgae Botryococcus braunii is widely recognized as a potentially important biofuel-feedstock whose commercial exploitation is limited by difficulties with its cultivation and harvesting. In this study, two B. braunii strains, Kossou-4 and Overjuyo-3 were successfully cultured at a 500
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
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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