Skip to Content
MilliporeSigma
All Photos(1)

Documents

295396

Sigma-Aldrich

Hydrogen

≥99.99%

Synonym(s):

Hydrogen gas

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
H2
CAS Number:
Molecular Weight:
2.02
EC Number:
MDL number:
UNSPSC Code:
12142100
PubChem Substance ID:
NACRES:
NA.22

vapor density

0.07 (21 °C, vs air)

Quality Level

assay

≥99.99%

autoignition temp.

1060 °F

expl. lim.

74.2 %

impurities

≤10 ppm oxygen
≤5 ppm water

bp

−252.8 °C (lit.)

mp

−259.2 °C (lit.)

SMILES string

[H]

InChI

1S/H2/h1H

InChI key

UFHFLCQGNIYNRP-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Hydrogen(H2) is colorless, odorless, tasteless, non-toxic, and highly flammable diatomic gas.

Application

H2 can be used:
  • To reduce metal oxide to metal.
  • In the catalytic hydrogenation of nitro compounds, ketones, and olefinic compounds.

Packaging

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

Other Notes

Legal Information

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

Hose barb

Product No.
Description
Pricing

Purge valve

Product No.
Description
Pricing

pictograms

FlameGas cylinder

signalword

Danger

hcodes

Hazard Classifications

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

Storage Class

2A - Gases

wgk_germany

nwg

flash_point_f

<-238.0 °F - closed cup

flash_point_c

< -150 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, multi-purpose combination respirator cartridge (US)


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Slide 1 of 1

1 of 1

Gold catalysts open a new general chemoselective route to synthesize oximes by hydrogenation of α, β,-unsaturated nitrocompounds with H2
Corma A, et al.
Journal of the American Chemical Society, 129(20), 6358-6359 (2007)
Catalytic reductive transformations of carboxylic and carbonic acid derivatives using molecular hydrogen
Dub, Pavel A and Ikariya, Takao
ACS Catalysis, 2(8), 1718-1741 (2012)
Effects of reduction temperature and metal- support interactions on the catalytic activity of Pt/γ-Al2O3 and Pt/TiO2 for the oxidation of CO in the presence and absence of H2
Alexeev OS, et al.
The Journal of Physical Chemistry B, 109(49), 23430-23443 (2005)
Metal-free catalytic olefin hydrogenation: low-temperature H2 activation by frustrated Lewis pairs
Greb L, et al.
Angewandte Chemie (International ed. in English), 51(40), 10164-10168 (2012)
Kinetics of reduction of iron oxides by H2: Part I: Low temperature reduction of hematite
Pineau A, et al.
Thermochimica Acta, 447(1), 89-100 (2006)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service