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F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
( R e d i r e c t e d f r o m F 2 O )
Oxygen difluoride
Names
IUPAC name
Oxygen difluoride
Other names
Identifiers
CAS Number
3D model (JSmol )
ChEBI
ChemSpider
ECHA InfoCard 100.029.087
EC Number
PubChem CID
RTECS number
UNII
CompTox Dashboard (EPA )
InChI=1S/F2O/c1-3-2 Y
Key: UJMWVICAENGCRF-UHFFFAOYSA-N Y
Key: UJMWVICAENGCRF-UHFFFAOYAI
Properties
Chemical formula
OF 2
Molar mass
53.9962 g/mol
Appearance
colorless gas, pale yellow liquid when condensed
Odor
peculiar, foul
Density
1.90 g/cm3 °C, liquid)
1.719 g/cm3 °C, liquid)
1.521 g/cm3 °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]
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 (S ⦵ 298 )
246.98 J/mol K
Std enthalpy of (Δf H ⦵ 298 )
−24.5 kJ mol−1
Gibbs free energy (Δf G ⦵ )
42.5 kJ/mol
Hazards
GHS labelling[4]
Pictograms
Signal word
Danger
Hazard statements
H270 , H280 , H314 , H330
NFPA 704
Lethal dose or concentration (LD, LC):
LC 50 median concentration )
1.5 ppm (mouse, 1 hour)
26 ppm (dog, 1 hour)
16 ppm (monkey, 1 hour)
[3]
NIOSH
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
O 2 F 2
NHF2
NF 3
SCl2
H 2 O
Cl 2 O
Br 2 O
I 2 O
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
Chemical compound
Oxygen difluoride is a chemical compound with the formula OF 2 VSEPR theory , the molecule adopts a bent molecular geometry . It is a strong oxidizer and has attracted attention in rocketry for this reason.[5] boiling point of −144.75 °C, OF2 [6] oxygen fluorides .
Preparation [ edit ]
Oxygen difluoride was first reported in 1929; it was obtained by the electrolysis of molten potassium fluoride and hydrofluoric acid containing small quantities of water .[7] [8] fluorine with a dilute aqueous solution of sodium hydroxide , with sodium fluoride as a side-product:
2 F2 2 2 O
Structure and bonding [ edit ]
It is a covalently bonded molecule with a bent molecular geometry and a F-O-F bond angle of 103 degrees. Its powerful oxidizing properties are suggested by the oxidation number of +2 for the oxygen atom instead of its normal −2.
Reactions [ edit ]
Above 200 °C, OF 2 radical mechanism.
2 OF2 2 2
OF 2 oxides and fluorides . Nonmetals also react: phosphorus reacts with OF 2 PF 5 POF3 ; sulfur gives SO 2 SF 4 noble gas , xenon reacts (at elevated temperatures) yielding XeF4
Oxygen difluoride reacts very slowly with water to form hydrofluoric acid :
OF 2 2 2
It can oxidize sulphur dioxide to sulfur trioxide and elemental fluorine :
OF 2 2 3 2
However, in the presence of UV radiation , the products are sulfuryl fluoride (SO 2 F 2 S 2 O 5 F 2
OF 2 2 2 O 5 F 2
This section
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adding to it .
(August 2018 )
Oxygen difluoride is considered an unsafe gas due to its oxidizing properties. It reacts explosively with water.[9] OF 2 necrosis , leaching calcium from the bones and causing cardiovascular damage, among a host of other highly toxic effects. Other acute poisoning effects include: pulmonary edema , bleeding lungs, headaches, etc. [10] fluorosis and other symptoms of chronic fluoride poisoning. Oxygen difluoride may be associated with kidney damage. [10] [11] [10]
Popular culture [ edit ]
In Robert L. Forward 's science fiction novel Camelot 30K Kuiper belt . While OF 2 K, the fictional alien lifeforms were described as endothermic , maintaining elevated body temperatures and liquid OF 2 radiothermal heating.
References [ edit ]
^ "difluorine monoxide; oxygen difluoride, physical properties, suppliers, CAS, MSDS, structure, Molecular Formula, Molecular Weight, Solubility, boiling point, melting point" . www.chemyq.com .
^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0475" . National Institute for Occupational Safety and Health (NIOSH).
^ "Oxygen difluoride" . Immediately Dangerous to Life or Health Concentrations (IDLH) . National Institute for Occupational Safety and Health (NIOSH).
^ GHS: GESTIS 570242
^ "Oxygen Difluoride - an overview | ScienceDirect Topics" . www.sciencedirect.com . Retrieved 2023-11-03 .
^ Greenwood, Norman N. ; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann . p. 819. ISBN 978-0-08-037941-8
^ Lebeau, P. ; Damiens, A. (1929). "Sur un nouveau mode de préparation du fluorure d'oxygène" [A new method of preparation of oxygen fluoride]. Comptes rendus hebdomadaires des séances de l'Académie des Sciences 188 : 1253–1255. Retrieved February 21, 2013 .
^ Lebeau, P. ; Damiens, A. (1927). "Sur l'existence d'un composé oxygéné du fluor" [The existence of an oxygen compound of fluorine]. Comptes rendus hebdomadaires des séances de l'Académie des Sciences 185 : 652–654. Retrieved February 21, 2013 .
^ "OXYGEN DIFLUORIDE | CAMEO Chemicals | NOAA" . cameochemicals.noaa.gov . Retrieved 2024-05-14 .
^ a b c www.kdocs.cn https://www.kdocs.cn/singleSign4CST?cb=https%3A%2F%2Fwww.kdocs.cn%2Fl%2Fcn9j8vXb7Gq3%3Ff%3D201&ts=1715699652 . Retrieved 2024-05-14 .
^ "CDC - NIOSH Pocket Guide to Chemical Hazards - Oxygen difluoride" . www.cdc.gov . Retrieved 2024-05-14 .
External links [ edit ]
t
e
Salts and covalent derivatives of the
fluoride ion
t
e
PF 6 − , AsF6 − , SbF6 − compounds
AlF6 − compounds
chlorides, bromides, iodides
SiF6 2- , GeF6 2- compounds
Oxyfluorides
Organofluorides
with transition metal,
nitric acids
bifluorides
thionyl, phosphoryl,
Chemical formulas
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=Oxygen_difluoride&oldid=1232931935 " C a t e g o r i e s : ● O x y g e n f l u o r i d e s ● R o c k e t o x i d i z e r s H i d d e n c a t e g o r i e s : ● C S 1 F r e n c h - l a n g u a g e s o u r c e s ( fr ) ● C S 1 e r r o r s : m i s s i n g t i t l e ● C S 1 e r r o r s : b a r e U R L ● A r t i c l e s w i t h o u t K E G G s o u r c e ● E C H A I n f o C a r d I D f r o m W i k i d a t a ● C h e m b o x h a v i n g G H S d a t a ● A r t i c l e s c o n t a i n i n g u n v e r i f i e d c h e m i c a l i n f o b o x e s ● C h e m b o x i m a g e s i z e s e t ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n m a t c h e s W i k i d a t a ● A r t i c l e s t o b e e x p a n d e d f r o m A u g u s t 2 0 1 8 ● A l l a r t i c l e s t o b e e x p a n d e d ● A r t i c l e s u s i n g s m a l l m e s s a g e b o x e s
● T h i s p a g e w a s l a s t e d i t e d o n 6 J u l y 2 0 2 4 , a t 1 1 : 3 7 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
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