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CAS Number: 7782-39-0
Sum Formula: D2
German Synonyms: Deuterium | Schwerer Wasserstoff
English Synonyms: Heavy hydrogen | Deuterium
EC Number: 231-952-7
Properties: flammable, gas
Temperature Class: T1
Structural Formula Deuterium

Disclaimer: The CLP/GHS classification is not regularly updated in Chemsafe. For up-to-date information, please use the ECHA database. ( https://echa.europa.eu/en/information-on-chemicals )

Boiling point
1 2016 BAM -249.5 °C UTI: 5000-019-002/20111005
UTI: 5000-019-002/20111005;
Line no Melting temperature Boiling temperature Molar mass Relative gas density
  • defined value
  • at atmospheric pressure
  • property of pure substance
  • defined value
  • at atmospheric pressure
  • property of pure substance
  • defined value
  • property of pure substance
  • defined value
  • property of pure substance
1 -254.4 °C -249.5 °C 4.028 g/mol 0.14
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM
Critical density
1 Critical Data 2016 BAM 0.067 g/cm3 UTI: 5000-019-003/20111005
Critical Data
UTI: 5000-019-003/20111005;
Line no Critical temperature Critical pressure Critical density
  • defined value
  • property of pure substance
  • defined value
  • property of pure substance
  • defined value
  • property of pure substance
1 -234.8 °C 1665 kPa 0.067 g/cm3
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM
Critical point
1 Critical Data 2007 BAM -234.8 °C UTI: 5592-012-001/20111005
Critical Data
UTI: 5592-012-001/20111005;
Line no Critical temperature Critical pressure
  • defined value
  • property of pure substance
  • defined value
  • property of pure substance
1 -234.8 °C 1665 kPa
Bibliographic data
Year 2007
Title Gas Encyclopedia
Database BAM
URL https://encyclopedia.airliquide.com/
Language ENGL
2 Critical Data 2016 BAM -234.8 °C UTI: 5000-019-003/20111005
Critical Data
UTI: 5000-019-003/20111005;
Line no Critical temperature Critical pressure Critical density
  • defined value
  • property of pure substance
  • defined value
  • property of pure substance
  • defined value
  • property of pure substance
1 -234.8 °C 1665 kPa 0.067 g/cm3
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM
Density
1 2003 BAM 101.3 kPa 0 °C 0.180 kg/m3 UTI: 5560-043-001/20111005
UTI: 5560-043-001/20111005;
Line no Temperature Pressure Density
  • Parameter of the measurement
  • property of pure substance
  • Parameter of the measurement
  • property of pure substance
  • defined value
  • property of pure substance
1 0 °C 101.3 kPa 0.180 kg/m3
Bibliographic data
Year 2003
Title Gasatlas
Database BAM
Language GERM
2 2016 BAM 101.3 kPa 0 °C 0.180 kg/m3 UTI: 5016-028-001/20111005
UTI: 5016-028-001/20111005;
Line no Temperature Pressure Density
  • Parameter of the measurement
  • property of pure substance
  • Parameter of the measurement
  • property of pure substance
  • defined value
  • property of pure substance
1 0 °C 101.3 kPa 0.180 kg/m3
Bibliographic data
Year 2016
Title Recommended Densities of Pure Gases
Database BAM
Language GERM
Melting point
1 2016 BAM -254.4 °C UTI: 5000-019-002/20111005
UTI: 5000-019-002/20111005;
Line no Melting temperature Boiling temperature Molar mass Relative gas density
  • defined value
  • at atmospheric pressure
  • property of pure substance
  • defined value
  • at atmospheric pressure
  • property of pure substance
  • defined value
  • property of pure substance
  • defined value
  • property of pure substance
1 -254.4 °C -249.5 °C 4.028 g/mol 0.14
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM
Molar mass
1 2016 BAM 4.028 g/mol UTI: 5000-019-002/20111005
UTI: 5000-019-002/20111005;
Line no Melting temperature Boiling temperature Molar mass Relative gas density
  • defined value
  • at atmospheric pressure
  • property of pure substance
  • defined value
  • at atmospheric pressure
  • property of pure substance
  • defined value
  • property of pure substance
  • defined value
  • property of pure substance
1 -254.4 °C -249.5 °C 4.028 g/mol 0.14
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM
Relative gas density
1 2006 0.14 UTI: 5594-027-001/20111005
UTI: 5594-027-001/20111005;
Line no Relative gas density
  • defined value
  • property of pure substance
1 0.14
Bibliographic data
Year 2006
Title DIN EN ISO 14912 Gas analysis - Conversion of gas mixture composition data (ISO 14912 :2003) German version EN ISO 14912:2006
Institution DIN,Deutsches Institut für Normung e.V.
Language ENGL
2 2016 BAM 0.14 UTI: 5000-019-002/20111005
UTI: 5000-019-002/20111005;
Line no Melting temperature Boiling temperature Molar mass Relative gas density
  • defined value
  • at atmospheric pressure
  • property of pure substance
  • defined value
  • at atmospheric pressure
  • property of pure substance
  • defined value
  • property of pure substance
  • defined value
  • property of pure substance
1 -254.4 °C -249.5 °C 4.028 g/mol 0.14
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM
  • The oxidizing agent is air with an oxygen content of 20.95 % by volume. In the data base it is usually not specified as mixture component. Exceptions are highlighted.
  • Pressure values are absolute, not gauge pressures.
  • Impurities can strongly influence characteristic safety data, particulary if the properties of the impurity considerably deviate from the respective properties of the pure substance.
  • Safety characteristics are only displayed if evaluated data are available.
  • Values can be cited by using the UTI number of the table (Uniform Table Identifier).
  • Color Codes:         recommended value             no recommendation               do not use value

Autoignition Temperature
1 2016 BAM 560 °C UTI: 5000-019-001/20111005
UTI: 5000-019-001/20111005;
Line no Lower explosion limit Upper explosion limit Lower explosion limit Upper explosion limit Autoignition Temperature
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • according to german standard
  • property of pure substance
1 6.7 Vol% [1] 79.6 Vol% [1] 11 g/m3 ⚠ 80 g/m3 ⚠ 560 °C [A] [2]
[A] DIN 51794: Testing of mineral oil hydrocarbons - Determination of ignition temperature; measurements are technically identical to those of ISO/IEC 80079-20-1 but results are treated differently.
[1] Capacitor discharge: 193.5 J, spark gap = 1.5 mm
[2] Test method: DIN 51794
⚠ The reference for the specification in g/m3 is the molar volume at 20 °C
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM
Limiting value for flammability (Tci)
1 2016 BAM 6.7 Mol% UTI: 5009-046-001/20111005
UTI: 5009-046-001/20111005;
Line no Limiting value for flammability (Tci)
  • recommended value
  • EU-standard
  • property of pure substance
1 6.7 Mol%
Bibliographic data
Year 2016
Title Recommended Tci values of Gases for Determination of fire potential for the selection of cylinder valve outlets 4.6 Calculation method: ISO 10156:2008 (E) - Draft
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language ENGL
2 2008 6.7 Mol% UTI: 5537-046-001/20111005
UTI: 5537-046-001/20111005;
Line no Limiting value for flammability (Tci)
  • recommended value
  • EU-standard
  • property of pure substance
1 6.7 Mol%
Bibliographic data
Year 2008
Title Draft for the revision of ISO 10156 "Gas cylinders – Gas and gas mixture – Determination of fire potential and oxidizing ability"
Subtitle Table 2 —Tci and Li values of flammable gases and vapours
Publisher ISO
Institution ISO - International Organization for Standardization
Language ENGL
Explosion limits
Lower explosion limit
1 2016 BAM 11 g/m3 UTI: 5000-019-001/20111005
UTI: 5000-019-001/20111005;
Line no Lower explosion limit Upper explosion limit Lower explosion limit Upper explosion limit Autoignition Temperature
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • according to german standard
  • property of pure substance
1 6.7 Vol% [1] 79.6 Vol% [1] 11 g/m3 ⚠ 80 g/m3 ⚠ 560 °C [A] [2]
[A] DIN 51794: Testing of mineral oil hydrocarbons - Determination of ignition temperature; measurements are technically identical to those of ISO/IEC 80079-20-1 but results are treated differently.
[1] Capacitor discharge: 193.5 J, spark gap = 1.5 mm
[2] Test method: DIN 51794
⚠ The reference for the specification in g/m3 is the molar volume at 20 °C
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM
2 1952 Coward, H. F.; Jones, G. W. 5 Vol% UTI: 5512-001-001/20111005
UTI: 5512-001-001/20111005;
Line no Lower explosion limit Upper explosion limit
  • property of pure substance
  • property of pure substance
1 5 Vol% [1] 75 Vol% [1]
[1] Closed or small vessels
Bibliographic data
Title Limits of Flammability of Gases and Vapors (Bulletin 503)
Author Coward, H. F.; Jones, G. W.
Year 1952
Abstract English Explosion limits of individual gases in air, oxygen and nitrous oxide.
Abstract German Explosionsgrenzen von reinen Gasen in Luft, Sauerstoff und Distickstoffoxid.
Document Number Coward/Jon
Institution U.S. Bureau of Mines
Publisher United States Government Printing Office
Publisher City Washington
Language ENGL
3 1965 Dittmar, Paul; Voigtsberger, Paul; Conrad, Dietrich 760 Torr 20 °C 6.7 Vol% UTI: 5502-002-001/20210310
UTI: 5502-002-001/20210310;
Line no Pressure Temperature Lower explosion limit Upper explosion limit
  • Parameter of the measurement
  • experimental
  • property of pure substance
  • Parameter of the measurement
  • experimental
  • property of pure substance
  • experimental
  • property of pure substance
  • experimental
  • property of pure substance
1 760 Torr 20 °C 6.7 Vol% [1] 79.6 Vol% [1]
[1] Capacitor discharge: 193.5 J, spark gap = 1.5 mm
Bibliographic data
Title Entwicklung und Anwendung eines Verfahrens zur Ermittlung der Zündgrenzen brennbarer Gase und Dämpfe in Mischung mit Luft oder Sauerstoff
Author Dittmar, Paul; Voigtsberger, Paul; Conrad, Dietrich
Year 1965
Journal Title Arbeitsschutz Cologne
Issue 3
Pages 58-63
Publisher Kohlhammer
Publisher City Stuttgart
Abstract English Description of a method for determining the explosion limits of flammable gases and liquids; explosion limits of ethylene oxide, ethylene, deuterium, and several halogenated hydrocarbons in air or oxygen.
Abstract German Beschreibung einer Methode für die Bestimmung von Explosionsgrenze brennbarer Gase und Flüssigkeiten; Explosionsgrenzen von Ethylenoxid, Ethylen, Deuterium und einigen halogenierten Kohlenwasserstoffen in Luft und Sauerstoff.
ISBN / ISSN 0003-7788
Language GERM
4 1965 Zabetakis, M. G. 4.9 Vol% UTI: 5511-008-001/20111005
UTI: 5511-008-001/20111005;
Line no Lower explosion limit Upper explosion limit
  • property of pure substance
  • property of pure substance
1 4.9 Vol% 75 Vol%
Bibliographic data
Title Flammability Characteristics of Combustible Gases and Vapors (Bulletin 627)
Author Zabetakis, M. G.
Year 1965
Abstract English Summary of limits of flammability and ignition temperatures of individual gases and vapors in air at atmospheric pressure. Appendix A, Table A-1. Explosion ranges, limits of flammability, maximum oxygen contents, and other safety data of flammable gas mixtures.
Abstract German Eine Zusammenstellung der Explosionsgrenzen und der Zündtemperaturen einiger brennbarer Gase und Dämpfe in Luft bei Atmosphärendruck; Appendix A, Tafel A-1. Explosionsbereiche, Explosionsgrenzen, maximale Sauerstoffanteile und andere sicherheitstechnische Kenngrößen von brennbaren Gasgemischen.
Document Number Zabetakis
Institution U.S. Bureau of Mines
URL https://www.osti.gov/servlets/purl/7328370
Publisher United States Government Printing Office
Publisher City Washington
Language ENGL
5 1985 Kuchta, J. M. 4.9 Vol% UTI: 5513-031-001/20111005
UTI: 5513-031-001/20111005;
Line no Lower explosion limit Upper explosion limit
  • 25 °C, 1 bar
  • property of pure substance
  • 25 °C, 1 bar
  • property of pure substance
1 4.9 Vol% 75 Vol%
Bibliographic data
Title Investigation of Fire and Explosion Accidents in the Chemical, Mining, and Fuel-Related Industries - A Manual (Bulletin 680)
Author Kuchta, J. M.
Year 1985
Abstract English Summary of explosion limits, flash points, ignition temperatures and chemical-physical data of liquid and gaseous compounds (gaseous combustion in air at atmospheric pressure); Appendix A
Abstract German Zusammenstellung von Explosionsgrenzen, Flammpunkten, Zündtemperaturen und chemisch-physikalischen Daten von Flüssigkeiten und Gasen (Explosion in der Gasphase bei Atmosphärendruck); Appendix A
Document Number DEDO-117
Institution U.S. Bureau of Mines
Publisher United States Government Printing Office
Publisher City Washington
Language ENGL
6 2016 BAM 6.7 Vol% UTI: 5000-019-001/20111005
UTI: 5000-019-001/20111005;
Line no Lower explosion limit Upper explosion limit Lower explosion limit Upper explosion limit Autoignition Temperature
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • according to german standard
  • property of pure substance
1 6.7 Vol% [1] 79.6 Vol% [1] 11 g/m3 ⚠ 80 g/m3 ⚠ 560 °C [A] [2]
[A] DIN 51794: Testing of mineral oil hydrocarbons - Determination of ignition temperature; measurements are technically identical to those of ISO/IEC 80079-20-1 but results are treated differently.
[1] Capacitor discharge: 193.5 J, spark gap = 1.5 mm
[2] Test method: DIN 51794
⚠ The reference for the specification in g/m3 is the molar volume at 20 °C
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM
Upper explosion limit
1 2016 BAM 80 g/m3 UTI: 5000-019-001/20111005
UTI: 5000-019-001/20111005;
Line no Lower explosion limit Upper explosion limit Lower explosion limit Upper explosion limit Autoignition Temperature
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • according to german standard
  • property of pure substance
1 6.7 Vol% [1] 79.6 Vol% [1] 11 g/m3 ⚠ 80 g/m3 ⚠ 560 °C [A] [2]
[A] DIN 51794: Testing of mineral oil hydrocarbons - Determination of ignition temperature; measurements are technically identical to those of ISO/IEC 80079-20-1 but results are treated differently.
[1] Capacitor discharge: 193.5 J, spark gap = 1.5 mm
[2] Test method: DIN 51794
⚠ The reference for the specification in g/m3 is the molar volume at 20 °C
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM
2 1952 Coward, H. F.; Jones, G. W. 75 Vol% UTI: 5512-001-001/20111005
UTI: 5512-001-001/20111005;
Line no Lower explosion limit Upper explosion limit
  • property of pure substance
  • property of pure substance
1 5 Vol% [1] 75 Vol% [1]
[1] Closed or small vessels
Bibliographic data
Title Limits of Flammability of Gases and Vapors (Bulletin 503)
Author Coward, H. F.; Jones, G. W.
Year 1952
Abstract English Explosion limits of individual gases in air, oxygen and nitrous oxide.
Abstract German Explosionsgrenzen von reinen Gasen in Luft, Sauerstoff und Distickstoffoxid.
Document Number Coward/Jon
Institution U.S. Bureau of Mines
Publisher United States Government Printing Office
Publisher City Washington
Language ENGL
3 1965 Dittmar, Paul; Voigtsberger, Paul; Conrad, Dietrich 760 Torr 20 °C 79.6 Vol% UTI: 5502-002-001/20210310
UTI: 5502-002-001/20210310;
Line no Pressure Temperature Lower explosion limit Upper explosion limit
  • Parameter of the measurement
  • experimental
  • property of pure substance
  • Parameter of the measurement
  • experimental
  • property of pure substance
  • experimental
  • property of pure substance
  • experimental
  • property of pure substance
1 760 Torr 20 °C 6.7 Vol% [1] 79.6 Vol% [1]
[1] Capacitor discharge: 193.5 J, spark gap = 1.5 mm
Bibliographic data
Title Entwicklung und Anwendung eines Verfahrens zur Ermittlung der Zündgrenzen brennbarer Gase und Dämpfe in Mischung mit Luft oder Sauerstoff
Author Dittmar, Paul; Voigtsberger, Paul; Conrad, Dietrich
Year 1965
Journal Title Arbeitsschutz Cologne
Issue 3
Pages 58-63
Publisher Kohlhammer
Publisher City Stuttgart
Abstract English Description of a method for determining the explosion limits of flammable gases and liquids; explosion limits of ethylene oxide, ethylene, deuterium, and several halogenated hydrocarbons in air or oxygen.
Abstract German Beschreibung einer Methode für die Bestimmung von Explosionsgrenze brennbarer Gase und Flüssigkeiten; Explosionsgrenzen von Ethylenoxid, Ethylen, Deuterium und einigen halogenierten Kohlenwasserstoffen in Luft und Sauerstoff.
ISBN / ISSN 0003-7788
Language GERM
4 1965 Zabetakis, M. G. 75 Vol% UTI: 5511-008-001/20111005
UTI: 5511-008-001/20111005;
Line no Lower explosion limit Upper explosion limit
  • property of pure substance
  • property of pure substance
1 4.9 Vol% 75 Vol%
Bibliographic data
Title Flammability Characteristics of Combustible Gases and Vapors (Bulletin 627)
Author Zabetakis, M. G.
Year 1965
Abstract English Summary of limits of flammability and ignition temperatures of individual gases and vapors in air at atmospheric pressure. Appendix A, Table A-1. Explosion ranges, limits of flammability, maximum oxygen contents, and other safety data of flammable gas mixtures.
Abstract German Eine Zusammenstellung der Explosionsgrenzen und der Zündtemperaturen einiger brennbarer Gase und Dämpfe in Luft bei Atmosphärendruck; Appendix A, Tafel A-1. Explosionsbereiche, Explosionsgrenzen, maximale Sauerstoffanteile und andere sicherheitstechnische Kenngrößen von brennbaren Gasgemischen.
Document Number Zabetakis
Institution U.S. Bureau of Mines
URL https://www.osti.gov/servlets/purl/7328370
Publisher United States Government Printing Office
Publisher City Washington
Language ENGL
5 1985 Kuchta, J. M. 75 Vol% UTI: 5513-031-001/20111005
UTI: 5513-031-001/20111005;
Line no Lower explosion limit Upper explosion limit
  • 25 °C, 1 bar
  • property of pure substance
  • 25 °C, 1 bar
  • property of pure substance
1 4.9 Vol% 75 Vol%
Bibliographic data
Title Investigation of Fire and Explosion Accidents in the Chemical, Mining, and Fuel-Related Industries - A Manual (Bulletin 680)
Author Kuchta, J. M.
Year 1985
Abstract English Summary of explosion limits, flash points, ignition temperatures and chemical-physical data of liquid and gaseous compounds (gaseous combustion in air at atmospheric pressure); Appendix A
Abstract German Zusammenstellung von Explosionsgrenzen, Flammpunkten, Zündtemperaturen und chemisch-physikalischen Daten von Flüssigkeiten und Gasen (Explosion in der Gasphase bei Atmosphärendruck); Appendix A
Document Number DEDO-117
Institution U.S. Bureau of Mines
Publisher United States Government Printing Office
Publisher City Washington
Language ENGL
6 2016 BAM 79.6 Vol% UTI: 5000-019-001/20111005
UTI: 5000-019-001/20111005;
Line no Lower explosion limit Upper explosion limit Lower explosion limit Upper explosion limit Autoignition Temperature
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • at atmospheric pressure and room temperature
  • property of pure substance
  • recommended value
  • according to german standard
  • property of pure substance
1 6.7 Vol% [1] 79.6 Vol% [1] 11 g/m3 ⚠ 80 g/m3 ⚠ 560 °C [A] [2]
[A] DIN 51794: Testing of mineral oil hydrocarbons - Determination of ignition temperature; measurements are technically identical to those of ISO/IEC 80079-20-1 but results are treated differently.
[1] Capacitor discharge: 193.5 J, spark gap = 1.5 mm
[2] Test method: DIN 51794
⚠ The reference for the specification in g/m3 is the molar volume at 20 °C
Bibliographic data
Year 2016
Title Recommended Safety Characteristics and Classifications of Flammable Gases and Gas Mixtures
Database BAM
Publisher Datenbank BAM-Projekt CHEMSAFE
Language GERM

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