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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

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IUPAC name:
hydrogen

Inventory

EC number:
215-605-7
EC name:
Hydrogen
CAS number:
1333-74-0
CAS number:
1333-74-0
Synonyms
Names:
Dihydrogen
Hydrogen
Molecular hydrogen

Molecular and structural information

Molecular formula:
H2
Molecular weight:
2.016
SMILES notation:
[H][H]
InChl:
InChI=1/H2/h1H
Structural formula:
Chemical structure

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