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Oxygen difluoride information


Oxygen difluoride
Structure and dimensions of the oxygen difluoride molecule
Space-filling model of the oxygen difluoride molecule
Names
IUPAC name
Oxygen difluoride
Other names
  • Oxygen fluoride
  • Hypofluorous anhydride
Identifiers
CAS Number
  • 7783-41-7 checkY
3D model (JSmol)
  • Interactive image
ChEBI
  • CHEBI:30494 checkY
ChemSpider
  • 22953 checkY
ECHA InfoCard 100.029.087 Edit this at Wikidata
EC Number
  • 231-996-7
PubChem CID
  • 24547
RTECS number
  • RS2100000
UNII
  • 7BCS2CW398 checkY
CompTox Dashboard (EPA)
  • DTXSID20894009 Edit this at Wikidata
InChI
  • InChI=1S/F2O/c1-3-2 checkY
    Key: UJMWVICAENGCRF-UHFFFAOYSA-N checkY
  • InChI=1/F2O/c1-3-2
    Key: UJMWVICAENGCRF-UHFFFAOYAI
SMILES
  • FOF
Properties
Chemical formula
 OF2
Molar mass 53.9962 g/mol
Appearance colorless gas, pale yellow liquid when condensed
Odor peculiar, foul
Density
  • 1.90 g/cm3 (−224 °C, liquid)
  • 1.719 g/cm3 (−183 °C, liquid)
  • 1.521 g/cm3 (liquid at −145 °C)
  • 1.88 g/L (gas at room temperature)
Melting point −223.8 °C (−370.8 °F; 49.3 K)
Boiling point −144.75 °C (−228.55 °F; 128.40 K)
Solubility in water
 hydrolyzes[1] slowly
Vapor pressure 48.9 atm (at −58.0 °C or −72.4 °F or 215.2 K[a])
Thermochemistry
Heat capacity (C)
 43.3 J/mol K
Std molar
entropy (S⦵298)
 246.98 J/mol K
Std enthalpy of
formation (ΔfH⦵298)
 −24.5 kJ mol−1
Gibbs free energy (ΔfG⦵)
 42.5 kJ/mol
Hazards
GHS labelling:[4]
Pictograms
 GHS03: OxidizingGHS04: Compressed GasGHS05: CorrosiveGHS06: Toxic
Signal word
 Danger
Hazard statements
 H270, H280, H314, H330
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 4: Very short exposure could cause death or major residual injury. E.g. VX gasFlammability 0: Will not burn. E.g. waterInstability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxideSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
4
0
3
OX
Lethal dose or concentration (LD, LC):
LC50 (median concentration)
  • 2.6 ppm (rat, 1 hour)
  • 1.5 ppm (mouse, 1 hour)
  • 26 ppm (dog, 1 hour)
  • 16 ppm (monkey, 1 hour)
[3]
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 0.05 ppm (0.1 mg/m3)[2]
REL (Recommended)
 C 0.05 ppm (0.1 mg/m3)[2]
IDLH (Immediate danger)
 0.5 ppm[2]
Related compounds
Related compounds
  • HFO
  • O2F2
  • NHF2
  • NF3
  • SCl2
  • H2O
  • Cl2O
  • Br2O
  • I2O
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)
Infobox references

Oxygen difluoride is a chemical compound with the formula OF2. As predicted by VSEPR theory, the molecule adopts a bent molecular geometry. It is a strong oxidizer and has attracted attention in rocketry for this reason.[5] With a boiling point of −144.75 °C, OF2 is the most volatile (isolable) triatomic compound.[6] The compound is one of many known oxygen fluorides.

  1. ^ "difluorine monoxide; oxygen difluoride, physical properties, suppliers, CAS, MSDS, structure, Molecular Formula, Molecular Weight, Solubility, boiling point, melting point". www.chemyq.com.
  2. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0475". National Institute for Occupational Safety and Health (NIOSH).
  3. ^ "Oxygen difluoride". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
  4. ^ GHS: GESTIS 570242
  5. ^ "Oxygen Difluoride - an overview | ScienceDirect Topics". www.sciencedirect.com. Retrieved 2023-11-03.
  6. ^ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. p. 819. ISBN 978-0-08-037941-8.


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Oxygen difluoride

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Oxygen difluoride is a chemical compound with the formula OF2. As predicted by VSEPR theory, the molecule adopts a bent molecular geometry. It is a strong...

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Oxygen fluoride

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known: Oxygen monofluoride (OF) Oxygen difluoride (OF2) Dioxygen difluoride (O2F2) Trioxygen difluoride or ozone difluoride (O3F2) Tetraoxygen difluoride (O4F2)...

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Dioxygen difluoride

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Dioxygen difluoride is a compound of fluorine and oxygen with the molecular formula O2F2. It can exist as an orange-colored solid which melts into a red...

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hypofluorous acid), +1⁄2 (dioxygenyl), +1 (dioxygen difluoride), and +2 (oxygen difluoride). Oxygen is reactive and will form oxides with all other elements...

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Difluoride

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Silver difluoride Vanadium difluoride Zinc difluoride Lead difluoride Tin(II) fluoride Dinitrogen difluoride Oxygen difluoride Dioxygen difluoride Selenoyl...

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Tetraoxygen difluoride

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Oxygen

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(dioxygenyl), +1 (dioxygen difluoride), and +2 (oxygen difluoride). Water (H 2O) is an oxide of hydrogen and the most familiar oxygen compound. Hydrogen atoms...

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Sulfur difluoride

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the S−F bond of a second molecule SF2: It can also be formed from oxygen difluoride and hydrogen sulfide:[citation needed] OF2 + H2S → SF2 + H2O Johnson...

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Hexaoxygen difluoride

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Hexaoxygen difluoride is a binary inorganic compound of fluorine and oxygen with the chemical formula O6F2. The compound is one of many known oxygen fluorides...

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Hypofluorous acid

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by fluorine, which produces hydrogen fluoride, oxygen difluoride, hydrogen peroxide, ozone and oxygen. HOF is explosive at room temperature, forming HF...

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Pentaoxygen difluoride

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Dichlorine monoxide

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molecule adopting a bent molecular geometry (due to the lone pairs on the oxygen atom) and resulting in C2V molecular symmetry. The bond angle is slightly...

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Xenon compounds

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Streng, L. V.; Streng, A. G. (1965). "Formation of Xenon Difluoride from Xenon and Oxygen Difluoride or Fluorine in Pyrex Glass at Room Temperature". Inorganic...

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List of highly toxic gases

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Silica gel

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with ordinary usage. It will react with hydrogen fluoride, fluorine, oxygen difluoride, chlorine trifluoride, strong acids, strong bases, and oxidizers....

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molecular geometry, also known as angular or V-shaped. Certain atoms, such as oxygen, will almost always set their two (or more) covalent bonds in non-collinear...

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Reatha Clark King

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Thionyl tetrafluoride

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hydrogen fluoride with a solution of sulfur dioxide, which also made oxygen difluoride and sulfuryl fluoride. Also thionyl chloride or thionyl fluoride electrolyzed...

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Chlorine trifluoride

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to give hydrogen fluoride and hydrogen chloride, along with oxygen and oxygen difluoride (OF2): ClF3 + H2O → HF + HCl + OF2 ClF3 + 2H2O → 3HF + HCl +...

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Selenoyl fluoride

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Hydrogen chalcogenide

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Erbium(III) oxide – Er2O3 Europium(III) oxide – Eu2O3 Oxygen difluoride – OF2 Dioxygen difluoride – O2F2 Francium oxide – Fr2O Gadolinium(III) oxide –...

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Disulfur difluoride

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FOF

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Identification friend or foe FOF grade tea FOF, the SMILES notation for oxygen difluoride This disambiguation page lists articles associated with the title...

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Highly hazardous chemical

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