dihydrogen (Q3027893)

product

1 reference

hydrogen metabolic process

participant

1 reference

hydrogen biosynthetic process

product

1 reference

methane biosynthetic process from methanol and hydrogen

reactant

1 reference

hydrogenase (acceptor) activity

1 reference

hydrogen:quinone oxidoreductase activity

1 reference

N5,N10-methenyltetrahydromethanopterin hydrogenase activity

1 reference

hydrogen dehydrogenase activity

1 reference

coenzyme F420 hydrogenase activity

1 reference

hydrogen dehydrogenase (NADP+) activity

1 reference

Methanosarcina-phenazine hydrogenase activity

1 reference

hydrogenase activity (NAD+, ferredoxin)

1 reference

nitrogenase (flavodoxin) activity

1 reference

sulfur reductase activity

1 February 2021

1 reference

1 February 2021

nitrogenase activity

1 reference

cytochrome-c3 hydrogenase activity

1 February 2021

1 reference

ferredoxin hydrogenase activity

1 February 2021

1 reference

1 February 2021

chemical structure

Dihydrogen-2D-dimensions.png
789 × 511; 6 KB

0 references

image

Dihydrogen-3D-vdW.png
1,100 × 891; 108 KB

1 reference

Dutch Wikipedia

chemical formula

H₂

2 references

[HH]

1 reference

PubChem

combustion enthalpy

−285.8 kilojoule per mole

1 reference

https://sites.google.com/site/ellesmerealevelchemistry/module-3-periodic-table-energy/3-2-physical-chemistry-1/3-2-1-enthalpy-changes/3-2-1-d-enthalpy-change-definitions

28 January 2019

standard molar entropy

130.7±0.05 joule per mole kelvin

phase of matter

gas

1 reference

https://chem.libretexts.org/Bookshelves/General_Chemistry/Book%3A_ChemPRIME_(Moore_et_al.)/16%3A_Entropy_and_Spontaneous_Reactions/16.06%3A_Standard_Molar_Entropies

25 January 2019

density

70.811 kilogram per cubic metre

applies to part

liquid

0 references

1.316 kilogram per cubic metre

applies to part

gas

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melting point

13.96 kelvin

0 references

boiling point

20.39 kelvin

0 references

speed of sound

1,101±1 metre per second

temperature

−252.9±0.1 degree Celsius

phase of matter

liquid

1 reference

CRC Handbook of Chemistry and Physics (78th edition)

page(s)

14-37

1,310±1 metre per second

27±1 degree Celsius

1 reference

CRC Handbook of Chemistry and Physics (78th edition)

page(s)

14-37

safety classification and labelling

NFPA 704: Standard System for the Identification of the Hazards of Materials for Emergency Response

3

4

0

no value

1 reference

https://cameochemicals.noaa.gov/chemical/3606

Regulation (EC) No. 1272/2008

GHS precautionary statement

2 references

https://echa.europa.eu/pl/information-on-chemicals/cl-inventory-database/-/discli/details/53968

http://gestis.itrust.de/nxt/gateway.dll/gestis_en/000000.xml?f=templates&fn=default.htm&vid=gestiseng:sdbeng

0 references

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has parts of the class

hydrogen atom

quantity

2

0 references

different from

hydrogen

1 reference

http://www.molecularhydrogenfoundation.org/frequent-qa/

said to be the same as

molecular hydrogen

0 references

Commons gallery

Dihydrogen

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Commons category

Dihydrogen

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topic's main category

Category:Dihydrogen

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Identifiers

1 reference

UFHFLCQGNIYNRP-UHFFFAOYSA-N

2 references

PubChem

ChEBI release 2020-09-01

0 references

1 reference

Hazardous Substances Data Bank

French Wikipedia

Gmelin number

3

0 references

ChEBI ID

18276

mapping relation type

0 references

0 references

1 reference

28 October 2019

Hydrogen (English)

10 May 2021

1 reference

Mapping file of InChIStrings, InChIKeys and DTXSIDs for the EPA CompTox Dashboard

DSSTOX compound identifier

DTXCID00196437

0 references

EC number

215-605-7

1 reference

ASHRAE refrigerant number

1 reference

ECHA InfoCard database

27 December 2018

Hydrogen (English)

CAS no.: 1333-74-0 (English)

0 references

1 reference

28 December 2019

HYDROGEN (English)

CAS no.: 1333-74-0 (English)

702

1 reference

https://www.ashrae.org/technical-resources/standards-and-guidelines/ashrae-refrigerant-designations