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295396 Sigma-Aldrich

Hydrogen

≥99.99%

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Properties

Related Categories Chemical Synthesis, Chemicals for the synthesis of candidate COVID-19 treatments, Cobicistat, Darunavir, Specialty Gases,
Quality Level   200
vapor density   0.07 (21 °C, vs air)
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.)
storage temp.   room temp
SMILES string   [H]
InChI   1S/H2/h1H
InChI key   UFHFLCQGNIYNRP-UHFFFAOYSA-N

Description

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

56 L in steel cylinder

Other Notes

For 295396-50L-EU packaging: 50 L of steel cylinder equipped with brass valve.

Recommended products

• For 295396-56L: Z146706 CGA 180 Regulator OR Z146943 CGA 110 Valve, with Z147095 CGA 110 to CGA 180 Adapter and Z146986 washer for adapter. Also recommended Z562599 CGA 180 Lecture Bottle Station.
• For 295396-50L-EU: outlet fitting: DIN 477-1 no.1, Z742162 or Z742164 are the recommended regulators.

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN1049 - class 2 - Hydrogen, compressed
WGK Germany 
nwg
RTECS 
MW8900000
Flash Point(F) 
-238.0 °F - closed cup
Flash Point(C) 
< -150 °C - closed cup

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

Articles

ASTM D3612-96: GC Analysis of Transformer Gas on Carboxen®-1010 PLOT

From our library of Articles, Sigma-Aldrich presents ASTM D3612-96: GC Analysis of Transformer Gas on Carboxen®-1010 PLOT
Keywords: Chromatography, Flame ionization detector, Gas chromatography, Thermal conductivity detector

Peer-Reviewed Papers
15

References

Related Products

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Description

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Z562599 Aldrich® lecture-bottle station, for non-corrosive gases, brass regulator

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