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00473

Sigma-Aldrich

Hydrogen

≥99.999%

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About This Item

Empirical Formula (Hill Notation):
H2
CAS Number:
Molecular Weight:
2.02
EC Number:
MDL number:
UNSPSC Code:
12141902
PubChem Substance ID:

vapor density

0.07 (21 °C, vs air)

Quality Level

Assay

≥99.999%

autoignition temp.

1060 °F

expl. lim.

74.2 %

bp

−252.8 °C (lit.)

mp

−259.2 °C (lit.)

SMILES string

[H]

InChI

1S/H2/h1H

InChI key

UFHFLCQGNIYNRP-UHFFFAOYSA-N

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Packaging

pressure tin; filling pressure at 15°C: 11 bar; content (15°C, 1 bar): 11 L

Other Notes

Sales restrictions may apply

Pictograms

FlameGas cylinder

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Flam. Gas 1A - Press. Gas Compr. Gas

Storage Class Code

2B - Aerosol cans and lighters

WGK

nwg

Flash Point(F)

<-238.0 °F - closed cup

Flash Point(C)

< -150 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Shafeer Kalathil et al.
Biotechnology advances, 31(6), 915-924 (2013-05-18)
Microorganisms naturally form biofilms on solid surfaces for their mutual benefits including protection from environmental stresses caused by contaminants, nutritional depletion or imbalances. The biofilms are normally dangerous to human health due to their inherited robustness. On the other hand
Patrick S Fier et al.
Science (New York, N.Y.), 342(6161), 956-960 (2013-11-23)
Fluorinated heterocycles are prevalent in pharmaceuticals, agrochemicals, and materials. However, reactions that incorporate fluorine into heteroarenes are limited in scope and can be hazardous. We present a broadly applicable and safe method for the site-selective fluorination of a single carbon-hydrogen
Hiroshi Ishikita et al.
Journal of the Royal Society, Interface, 11(91), 20130518-20130518 (2013-11-29)
In protein environments, proton transfer reactions occur along polar or charged residues and isolated water molecules. These species consist of H-bond networks that serve as proton transfer pathways; therefore, thorough understanding of H-bond energetics is essential when investigating proton transfer
Tomohiro Nishizawa et al.
Science (New York, N.Y.), 341(6142), 168-172 (2013-05-25)
Ca(2+)/cation antiporters catalyze the exchange of Ca(2+) with various cations across biological membranes to regulate cytosolic calcium levels. The recently reported structure of a prokaryotic Na(+)/Ca(2+) exchanger (NCX_Mj) revealed its overall architecture in an outward-facing state. Here, we report the
Judith P Klinman et al.
Annual review of biochemistry, 82, 471-496 (2013-06-12)
The relationship between protein dynamics and function is a subject of considerable contemporary interest. Although protein motions are frequently observed during ligand binding and release steps, the contribution of protein motions to the catalysis of bond making/breaking processes is more

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