126152
1,2-Difluorobenzene
98%
Synonym(s):
o-Difluorobenzene
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About This Item
Empirical Formula (Hill Notation):
C6H4F2
CAS Number:
Molecular Weight:
114.09
UNSPSC Code:
12352100
NACRES:
NA.22
PubChem Substance ID:
EC Number:
206-680-7
Beilstein/REAXYS Number:
1905113
MDL number:
Product Name
1,2-Difluorobenzene, 98%
InChI key
GOYDNIKZWGIXJT-UHFFFAOYSA-N
InChI
1S/C6H4F2/c7-5-3-1-2-4-6(5)8/h1-4H
SMILES string
Fc1ccccc1F
assay
98%
form
liquid
refractive index
n20/D 1.443 (lit.)
bp
92 °C (lit.)
mp
−34 °C (lit.)
density
1.158 g/mL at 25 °C (lit.)
functional group
fluoro
Quality Level
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Application
1,2-Difluorobenzene(1,2-DFB) has been used to study the mechanism of dissociation of o-, m- and p-difluorobenzene ions by threshold photoelectron photoion coincidence spectroscopy. It has been used to study the room temperature adsorption of 1,2-DFB, 1,2-dichlorobenzene and 1,2-dibromobenzene on Si(100)2x1 by X-ray photoelectron spectroscopy and temperature programmed desorption. It was used as solvent in electrochemical studies on transition metal complexes.
Solvent useful for electrochemical studies on transition metal complexes.
General description
1,2-Difluorobenzene undergoes defluorination under very mild conditions by H2 in the presence of NaOAc over rhodium pyridylphosphine and bipyridyl complexes tethered on a silica-supported palladium catalyst.
signalword
Danger
hcodes
pcodes
Hazard Classifications
Flam. Liq. 2
Storage Class
3 - Flammable liquids
wgk
WGK 3
flash_point_f
33.8 °F - closed cup
flash_point_c
1 °C - closed cup
ppe
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
Regulatory Information
危险化学品
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Hydrodefluorination of fluorobenzene and 1, 2-difluorobenzene under mild conditions over rhodium pyridylphosphine and bipyridyl complexes tethered on a silica-supported palladium catalyst.
Yang H, et al.
Organometallics, 18(12), 2285-2287 (1999)
Anne-Marie Boulanger et al.
Journal of the American Society for Mass Spectrometry, 20(1), 20-24 (2008-10-18)
Threshold photoelectron photoion coincidence (TPEPICO) experiments have shown that o-, m-, and p-difluorobenzene ions dissociate via a common, ring-opened intermediate and not via ionized p-difluorobenzene. Rice-Ramsperger-Kassel-Marcus (RRKM) modeling of the experimental breakdown curves yields activation energies for the initial isomerization
Competition between associative and dissociative adsorption of 1, 2-dihalogenated benzenes on Si (100) 2? 1: Formation of dihalocyclohexadiene, halophenyl and phenylene adstructures.
Zhou XJ and Leung KT.
Surface Science, 600(16), 3285-3296 (2006)
Inorganic Chemistry, 28, 3923-3923 (1989)
Adrian Romero-Flores et al.
Chemosphere, 186, 151-159 (2017-08-05)
Electronic noses have been widely used in the food industry to monitor process performance and quality control, but use in wastewater and biosolids treatment has not been fully explored. Therefore, we examined the feasibility of an electronic nose to discriminate
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