Hydrogen


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CAS 1333-74-0 - Hydrogen

Analyte:  Hydrogen

Abbreviation:  H2

CAS Number or ID:  1333-74-0

Department:  Air

EC Number (EINECS):  1333-74-0

Synonyms:  Dihydrogen;o-Hydrogen;p-Hydrogen;Molecular hydrogen;H2;UN 1049;UN 1966

Chemical Formula:  H2

Apearance:  colourless gas

Melting Point:  -259 C

Boiling Point:  -253 C

Vapor Density:  0.07 (air = 1)

Vapor Pressure:  (n/a at 20 C)

Auto Ignition:  560 C

Stability:  Stable. Highly flammable. Readily forms explosive mixtures with air. Upper (U.K.) composition limit for use of a nitrogen/hydrogen mixture in the open lab is 5.7% hydrogen.Analytical testing dots

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