H2
2.016 g/mol
Industrial ChemicalDanger
Hydrogen
CAS1333-74-0EC215-605-7
Category
Industrial Chemical
Compound Class
n.a
Primary Use
Industrial chemical for welding and refining
Hydrogen is a colorless, odorless gas that is highly flammable and burns with a pale blue, almost invisible flame. It is lighter than air and acts as a simple asphyxiate by displacing oxygen.
Oxyhydrogen welding and cuttingPetroleum refiningHydrogenation of oils and organic compounds
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
StrongForm Family
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mineral supplement and leavening agent
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asymmetric hydrogenation catalyst
ReferenceSame Category
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Organotin intermediate for chemical synthesis
ReferenceSame Category
Ammonia solution
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Electroplating and industrial processing
Referencestereoisomer of
Dideuterium
CAS7782-39-0
Neutron moderator in nuclear reactors
Safety Reference
Danger
H220Extremely flammable gas
H280Contains gas under pressure; may explode if heated
H281Contains refrigerated gas; may cause cryogenic burns or injury
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for Hydrogen (CAS 1333-74-0) is 2804.10.
HS code (international, 6-digit)
2804.10
EU CN code (8-digit)
2804 10 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
molecular hydrogen
InChIKey
UFHFLCQGNIYNRP-UHFFFAOYSA-N
SMILES
[HH]
Synonyms (30)
- 1H
- E949
- H
- H-H
- H2
- Atomic hydrogen
- Dihydrogen
- Hydrogen
- Hydrogen atoms
- Hydrogen gas
- Hydrogen in Steel, 1g/piece
- Hydrogen in stainless steel
- Hydrogen, Messer(R) CANgas
- Hydrogen, atomic
- Molecular hydrogen
- Protium
- T101 Monoclonal Antibody
- Wasserstoff
- hidrogeno
- hydrogen molecule
- hydrogene
- monoatomic hydrogen
- o-Hydrogen
- p-Hydrogen
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