H2
4.0282035557 g/mol
Industrial ChemicalDanger
Dideuterium
CAS7782-39-0EC231-952-7
Category
Industrial Chemical
Compound Class
Other
Primary Use
Neutron moderator in nuclear reactors
Dideuterium is a stable isotopic form of hydrogen consisting of two deuterium atoms bonded together. It is primarily significant as a neutron moderator in nuclear reactors, where it slows down fast neutrons to sustain a controlled nuclear chain reaction.
Neutron moderator in nuclear reactors
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
ReferenceSame Category
Difluorine
CAS7782-41-4
manufacture of uranium hexafluoride and fluorocarbons
ReferenceSame Category
Liquid oxygen
CAS7782-44-7
oxidizing agent for steel and chemical production
ReferenceSame Category
Dichlorine
CAS7782-50-5
Disinfectant and oxidizing agent
ReferenceSame Category
Potassium hypophosphite
CAS7782-87-8
reducing agent in chemical synthesis
Referencestereoisomer of
Dihydrogen
CAS1333-74-0
Industrial chemical for welding and refining
Safety Reference
Danger
H220Extremely flammable gas
H280Contains gas under pressure; may explode if heated
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for Dideuterium (CAS 7782-39-0) is 2845.90.
HS code (international, 6-digit)
2845.90
EU CN code (8-digit)
2845 90 10
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
InChIKey
UFHFLCQGNIYNRP-VVKOMZTBSA-N
SMILES
[2H][2H]
Synonyms (17)
- D2
- (2)H2
- Deuterium (gas)
- Deuterium molecule
- Deuterium, 99.7 atom % D
- Deuterium, 99.8 atom % D
- Deuterium, 99.9 atom % D
- Deuterium, 99.96 atom % D
- Deuterium, compressed
- Dideuterium
- Diplogen
- HYDROGEN H-2
- Heavy hydrogen
- Hydrogen, isotope of mass 2
- MOLECULAR HYDROGEN H-2
- hydrogen 2
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