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CAS Number: 7782-44-7

Sum Formula: O2

German Synonyms: Sauerstoff

English Synonyms: Oxygen

EC Index Number: 008-001-00-8

EC Number: 231-956-9

Properties: gas, oxidizing

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 )

GHS Hazard and Category:

Ox. Gas 1: oxidizing gases, category 1
Press. Gas: Compressed gases

GHS Pictogram:

GHS Signal Word: Danger

GHS Hazard Statement:

H270: May cause or intensify fire; oxidizer.

Boiling point

2007

BAM

-183 °C

UTI: 5592-039-002/20111005

UTI: 5592-039-002/20111005;
Line no	Boiling temperature
	defined value at atmospheric pressure property of pure substance
1	-183 °C

Bibliographic data

Year	2007
Title	Gas Encyclopedia
Database	BAM
URL	https://encyclopedia.airliquide.com/
Language	ENGL

2016

BAM

-183 °C

UTI: 5001-058-002/20111005

UTI: 5001-058-002/20111005;
Line no	Boiling temperature	Relative gas density	Molar mass
	defined value at atmospheric pressure property of pure substance	defined value property of pure substance	defined value property of pure substance
1	-183 °C	1.11	27.026 g/mol

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

Critical Data

2007

BAM

0.436 g/cm³

UTI: 5592-039-001/20111005

Critical Data
UTI: 5592-039-001/20111005;
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	-118.6 °C	5043 kPa	0.436 g/cm³

Bibliographic data

Year	2007
Title	Gas Encyclopedia
Database	BAM
URL	https://encyclopedia.airliquide.com/
Language	ENGL

Critical Data

2016

BAM

0.436 g/cm³

UTI: 5001-058-001/20111005

Critical Data
UTI: 5001-058-001/20111005;
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	-118.6 °C	5043 kPa	0.436 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

Critical Data

2007

BAM

-118.6 °C

UTI: 5592-039-001/20111005

Critical Data
UTI: 5592-039-001/20111005;
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	-118.6 °C	5043 kPa	0.436 g/cm³

Bibliographic data

Year	2007
Title	Gas Encyclopedia
Database	BAM
URL	https://encyclopedia.airliquide.com/
Language	ENGL

Critical Data

2016

BAM

-118.6 °C

UTI: 5001-058-001/20111005

Critical Data
UTI: 5001-058-001/20111005;
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	-118.6 °C	5043 kPa	0.436 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

2003

BAM

101.3 kPa

0 °C

1.429 kg/m³

UTI: 5560-075-001/20111005

UTI: 5560-075-001/20111005;
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	1.429 kg/m³

Bibliographic data

Year	2003
Title	Gasatlas
Database	BAM
Language	GERM

2016

BAM

101.3 kPa

0 °C

1.429 kg/m³

UTI: 5016-060-001/20111005

UTI: 5016-060-001/20111005;
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	1.429 kg/m³

Bibliographic data

Year	2016
Title	Recommended Densities of Pure Gases
Database	BAM
Language	GERM

Molar mass

2016

BAM

27.026 g/mol

UTI: 5001-058-002/20111005

UTI: 5001-058-002/20111005;
Line no	Boiling temperature	Relative gas density	Molar mass
	defined value at atmospheric pressure property of pure substance	defined value property of pure substance	defined value property of pure substance
1	-183 °C	1.11	27.026 g/mol

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

2006

1.11

UTI: 5594-062-001/20111005

UTI: 5594-062-001/20111005;
Line no	Relative gas density
	defined value property of pure substance
1	1.11

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

2016

BAM

1.11

UTI: 5001-058-002/20111005

UTI: 5001-058-002/20111005;
Line no	Boiling temperature	Relative gas density	Molar mass
	defined value at atmospheric pressure property of pure substance	defined value property of pure substance	defined value property of pure substance
1	-183 °C	1.11	27.026 g/mol

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

Coefficient of oxygen equivalency

2010

UTI: 5017-000-001/20111005

UTI: 5017-000-001/20111005;
Line no	Coefficient of oxygen equivalency
	recommended value EU-standard property of pure substance
1	1

Bibliographic data

Year	2010
Title	ISO 10156: 2010: Gas cylinders - Gas and gas mixture - Determination of fire potential and oxidizing ability (ISO 10156.2010)
Publisher	International Standard ISO 10156:2010 (E)
Document Number	VOR-129
Institution	ISO - International Organization for Standardization
Language	ENGL

2000

Schröder, V.

UTI: 5538-000-001/20111005

UTI: 5538-000-001/20111005;
Line no	Coefficient of oxygen equivalency
	recommended value EU-standard property of pure substance
1	1

Bibliographic data

Title	Estimation of the oxidation potential of gas mixtures
Author	Schröder, V.
Year	2000
Title German	Abschätzung des Oxidationspotentials von Gasgemischen
Abstract English	In the ISO 10156 standard a calculation method has been published for estimation of the "oxidation power" of gas mixtures. A mixture is considered to be more oxidizing than air, when the following condition is satisfied: OP =Sum(i) (Xi * Ci )>= 21. Ci = coeff. of oxygen equivalency. Referent substance is ethane. Table with measured Ci values for O2, air, N2O, NO, NF3 is presented.
Abstract German	In der ISO-Norm 10156 wird des weiteren ein Rechenverfahren zur Abschätzung des Oxidationspotentials von Gasgemischen angegeben. Ein Gasgemisch ist danach stärker oxidierend als Luft, wenn folgende Bedingung erfüllt ist: OP= Summe(i) (Xi * Ci )>= 21. Stoffmengenanteil an oxidierendender Komponente i in % ist Xi; Ci=Sauerstoffäquivalenzköffizient. Referenzbrennstoff ist Ethan. Tabelle mit den gemessenen Ci-Werten für O2, Luft, N2O, NO, Cl2, NF3.
Institution	Bundesanstalt für Materialforschung und -prüfung (BAM)
Publisher	Wirtschaftsverlag NW
Publisher City	Bremerhaven
Language	GERM

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Oxygen

Classification

Physico-Chemical Data

Safety Characteristics of Substance

Safety Characteristics of Substance Mixtures

(1,1-Dimethylethyl)benzene, Oxygen ((1,1-Dimethylethyl)benzene/oxygen mixture)

(3-Trifluoromethyl)benzoyl fluoride, Oxygen ((3-Trifluoromethyl)benzoyl fluoride/oxygen mixture)

(Z)-2-Butene, Oxygen ((Z)-2-Butene/oxygen mixture)

1,1'-Oxybisethane, Oxygen (1,1'-Oxybisethane/oxygen mixture)

1,1,1,2-Tetrafluoroethane, Oxygen (R 134a/oxygen mixture)

1,1,1,2-Tetrafluoroethane, Nitrogen, Oxygen (R 134a/nitrogen/oxygen mixture)

1,1,1,3,3,3-Hexafluoro-2-(fluoromethoxy)propane, Dinitrogen oxide, Oxygen (Sevoflurane/dinitrogen oxide/oxygen mixture)

1,1,1,3,3,3-Hexafluoro-2-(fluoromethoxy)propane, Oxygen (Sevoflurane/oxygen mixture)

1,1,2,2-Tetrachloroethane, Oxygen (1,1,2,2-Tetrachloroethane/oxygen mixture)

1,1,2-Trichloro-1,2,2-trifluoroethane, Oxygen (1,1,2-Trichloro-1,2,2-trifluoroethane/oxygen mixture)

1,1-Dichloroethane, Oxygen (1,1-Dichloroethane/oxygen mixture)

1,1-Dichloroethene, Oxygen (1,1-Dichloroethene/oxygen mixture)

1,1-Diethoxyethane, Oxygen (1,1-Diethoxyethane/Oxygen mixture)

1,1-Difluoroethane, Oxygen (1,1-Difluoroethane/oxygen mixture)

1,1-Difluoroethene, Oxygen (1,1-Difluoroethene/oxygen mixture)

1,2,3-Propanetriol, Oxygen (1,2,3-Propanetriol/oxygen mixture)

1,2-Dichloroethane, Oxygen (1,2-Dichloroethane/oxygen mixture)

1,2-Dimethylbenzene, Oxygen (1,2-Dimethylbenzene/oxygen mixture)

1,2-Ethanediol, Oxygen (1,2-Ethanediol/oxygen mixture)

1,3,5-Trimethylbenzene, Oxygen (1,3,5-Trimethylbenzene/Oxygen mixture)

1,3-Dimethylbenzene, Oxygen (1,3-Dimethylbenzene/Oxygen mixture)

1,3-Dioxolane, Oxygen (1,3-Dioxolane/Oxygen mixture)

1,4-Dimethylbenzene, Oxygen (1,4-Dimethylbenzene/oxygen mixture)

1,4-Dioxane, Oxygen (1,4-Dioxane/Oxygen mixture)

1-Butanol, Oxygen (1-Butanol/oxygen mixture)

1-Butene, Oxygen (1-Butene/oxygen mixture)

1-Decanol, Oxygen (1-Decanol/Oxygen mixture)

1-Heptanol, Oxygen (Heptanol-1/oxygen mixture)

1-Hexanol, Oxygen (Hexanol-1/oxygen mixture)

1-Iodobutane, Oxygen (1-Iodobutane/Oxygen mixture)

1-Iodopropane, Oxygen (1-Iodopropane/Oxygen mixture)

1-Methyl-4-(1-methylethyl)benzene, Oxygen (1-Methyl-4-(1-methylethyl)benzene/oxygen mixture)

1-Octanol, Oxygen (Octanol-1/oxygen mixture)

1-Pentanol, Oxygen (1-Pentanol/Oxygen mixture)

1-Propanol, Nitrogen, Oxygen (1-Propanol/Oxygen/Nitrogen mixture)

1-Propanol, Oxygen (1-Propanol/Oxygen mixture)

1-Propene, Nitrogen, Oxygen (Propene/nitrogen/oxygen mixture)

1-Propene, Oxygen (Propene/oxygen mixture)

2,2'-Iminobisethanol, Oxygen (2,2'-Iminobisethanol/oxygen mixture)

2,2'-Oxybispropane, Oxygen (2,2'-Oxybispropane/oxygen mixture)

2,2,2-Trichloroethanol, Oxygen (2,2,2-Trichloroethanol/oxygen mixture)

2,2,2-Trifluoroethanol, Oxygen (2,2,2-Trifluoroethanol/oxygen mixture)

2,2-Dichloro-1,1-difluoro-1-methoxyethane, Oxygen (Methoxyflurane/oxygen mixture)

2,4-Pentanedione, Oxygen (2,4-Pentandione/Oxygen mixture)

2-(Difluoromethoxy)-1,1,1,2-tetrafluoroethane, Dinitrogen oxide, Oxygen (Desflurane/dinitrogen oxide/oxygen mixture)

2-(Difluoromethoxy)-1,1,1,2-tetrafluoroethane, Oxygen (Desflurane/oxygen mixture)

2-Aminoethanol, Oxygen (Ethanolamine/oxygen mixture)

2-Bromo-2-chloro-1,1,1-trifluoroethane, Oxygen (Halothane/oxygen mixture)

2-Butanol, Oxygen (2-Butanol/Oxygen mixture)

2-Butanone, Oxygen (2-Butanone/Oxygen mixture)

2-Chloro-1-(difluoromethoxy)-1,1,2-trifluoroethane, Oxygen (Enflurane/oxygen mixture)

2-Chloro-2-(difluoromethoxy)-1,1,1-trifluoroethane, Dinitrogen oxide, Oxygen (Isoflurane/dinitrogen oxide/oxygen mixture)

2-Chloro-2-(difluoromethoxy)-1,1,1-trifluoroethane, Oxygen (Isoflurane/oxygen mixture)

2-Chlorobutane, Oxygen (2-Chlorobutane/Oxygen mixture)

2-Ethoxyethanol, Oxygen (2-Ethoxyethanol/Oxygen mixture)

2-Fluorobenzenamine, Oxygen (2-Fluorobenzenamine/oxygen mixture)

2-Heptanone, Oxygen (2-Heptanone/Oxygen mixture)

2-Methyl-1-propanol, Oxygen (2-Methyl-1-propanol/oxygen mixture)

2-Methyl-1-propene, Nitrogen, Oxygen (2-Methyl-1-propene/nitrogen/oxygen mixture)

2-Methyl-1-propene, Oxygen (2-Methyl-1-propene/oxygen mixture)

2-Methyl-2-propanol, Oxygen (2-Methyl-2-propanol/oxygen mixture)

2-Methylbutane, Oxygen (2-Methylbutane/oxygen mixture)

2-Methylpropane, Oxygen (2-Methylpropane/oxygen mixture)

2-Nitropropane, Oxygen (2-Nitropropane/oxygen mixture)

2-Pentanone, Oxygen (2-Pentanone/oxygen mixture)

2-Propanol, Oxygen (2-Propanol/oxygen mixture)

2-Propanone, Nitrogen, Oxygen (2-Propanone/oxygen/nitrogen mixture)

2-Propanone, Oxygen (2-Propanone/oxygen mixture)

2-Propen-1-ol, Oxygen (2-Propen-1-ol/oxygen mixture)

3,3-Dimethyl-2-butanone, Oxygen (3,3-Dimethyl-2-butanone/oxygen mixture)

3-Heptanone, Oxygen (3-Heptanone/oxygen mixture)

3-Methyl-1-butanol, Oxygen (3-Methyl-1-butanol/oxygen mixture)

3-Methyl-1-butanol acetate, Oxygen (3-Methyl-1-butanol acetate/oxygen mixture)

3-Pentanone, Oxygen (3-Pentanone/oxygen mixture)

4-Heptanone, Oxygen (4-Heptanone/oxygen mixture)