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369-34-6

Basic Information
CAS No.: 369-34-6
Name: 3,4-Difluoronitrobenzene
Article Data: 28
Cas Database
Molecular Structure:
Molecular Structure of 369-34-6 (3,4-Difluoronitrobenzene)
Formula: C6H3F2NO2
Molecular Weight: 159.092
Synonyms: Benzene, 1,2-difluoro-4-nitro-;1,2-Difluoro-4-nitrobenzene;3,4-Difluoro nitrobenzene;3,4-Difluoro-1-Nitrobenzene;2,4-Difluoro Nitrobenzene;
EINECS: 206-718-2
Density: 1.45 g/cm3
Melting Point: -12 °C
Boiling Point: 200 °C at 760 mmHg
Flash Point: 80.6 °C
Solubility: insoluble in water
Appearance: clear yellow liquid
Hazard Symbols: IrritantXi,HarmfulXn
Risk Codes: 36/37/38-20/21/22
Safety: 26-36/37/39
Transport Information: N/A
PSA: 45.82000
LogP: 2.39620
Synthetic route
367-11-3

ortho-difluorobenzene

369-34-6

3,4-difluoronitrobenzene

Conditions
ConditionsYield
With molecular sieve; nitric acid; acetic anhydride at 0℃; for 3h; other reagent: nitric acid/sulfuric acid;98%
With sulfuric acid; nitric acid at 20℃; for 0.0180556h; Temperature;97.3%
With sulfuric acid; nitric acid at 60 - 70℃; for 6h;91%
20372-63-8

4,5-difluoro-2-nitrobenzoic acid

369-34-6

3,4-difluoronitrobenzene

Conditions
ConditionsYield
With copper In 1-methyl-pyrrolidin-2-one at 250℃; for 0.5h;94%
99-54-7

3,4-dichloronitrobenzene

A

369-34-6

3,4-difluoronitrobenzene

B

350-30-1

3-chloro-4-fluoronitrobenzene

Conditions
ConditionsYield
With potassium fluoride; tetraphenylphosphonium bromide at 175 - 195℃; for 30h; Yields of byproduct given;A n/a
B 79%
With potassium fluoride; 2-(4-chlorophenyl)propene copolymer-grafted tetraphenylphosphonium chloride; cross-linked styrene In sulfolane at 210℃; for 7h;A 12%
B 64%
With potassium fluoride; tetraphenylphosphonium bromide at 175 - 195℃; for 30h; Yield given. Yields of byproduct given;
97-00-7

1-chloro-2,4-dinitro-benzene

369-34-6

3,4-difluoronitrobenzene

Conditions
ConditionsYield
With potassium fluoride; 3,4,5,6-tetrafluorophthaloyldifluoride In sulfolane at 200℃; for 13h;77%
70-34-8

2,4-Dinitrofluorobenzene

369-34-6

3,4-difluoronitrobenzene

Conditions
ConditionsYield
With potassium fluoride; benzene-1,2,4,5-tetracarbonyl chloride In sulfolane at 200℃; for 4h;58%
350-46-9

4-Fluoronitrobenzene

369-34-6

3,4-difluoronitrobenzene

Conditions
ConditionsYield
With formic acid; fluorine at 10℃; for 1.75h; Fluorination;53%
97-00-7

1-chloro-2,4-dinitro-benzene

A

369-34-6

3,4-difluoronitrobenzene

B

364-74-9

1,4-difluoro-2-nitrobenzene

Conditions
ConditionsYield
With potassium fluoride; tetraphenylphosphonium bromide; Phthaloyl dichloride In sulfolane; toluene at 190℃; for 6h;A 46%
B 3 % Chromat.
With potassium fluoride; Phthaloyl dichloride; tetraphenylphosphonium bromide In sulfolane 1) 150 deg C, 2 h, 2) 190 deg C, 6 h;A 46%
B 3%
70-34-8

2,4-Dinitrofluorobenzene

A

369-34-6

3,4-difluoronitrobenzene

B

68-12-2, 33513-42-7

N,N-dimethyl-formamide

Conditions
ConditionsYield
With potassium fluoride at 145℃;
With potassium fluoride at 155℃;
97-00-7

1-chloro-2,4-dinitro-benzene

A

369-34-6

3,4-difluoronitrobenzene

B

68-12-2, 33513-42-7

N,N-dimethyl-formamide

Conditions
ConditionsYield
With potassium fluoride at 155℃;
With potassium fluoride at 145℃;
115561-03-0

1-fluoro-2-fluorosulfonyl-4-nitrobenzene

A

369-34-6

3,4-difluoronitrobenzene

B

62094-86-4

2,5-difluorobenzenesulfonyl fluoride

Conditions
ConditionsYield
With potassium fluoride; tetraphenylphosphonium bromide In sulfolane; toluene at 210℃; under 300 Torr; Title compound not separated from byproducts;
With potassium fluoride; tetraphenylphosphonium bromide In sulfolane at 210℃; under 270 - 300 Torr; for 5h; Yield given. Yields of byproduct given;
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    3,4-Difluoronitrobenzene

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Chemistry

IUPAC Name: 1,2-difluoro-4-nitrobenzene
Synonyms of 3,4-Difluoronitrobenzene (CAS NO.369-34-6): 1,2-Difluoro-4-nitrobenzene ; Benzene, 1,2-difluoro-4-nitro-
CAS NO: 369-34-6
Molecular Formula: C6H3F2NO2
Molecular Weight: 159.09
Molecular Structure:
EINECS: 206-718-2
H bond acceptors: 3
H bond donors: 0
Freely Rotating Bonds: 1
Polar Surface Area: 45.82 Å2
Index of Refraction: 1.509
Molar Refractivity: 32.78 cm3
Molar Volume: 109.6 cm3
Surface Tension: 40.6 dyne/cm
Density: 1.45 g/cm3
Flash Point: 80.6 °C
Enthalpy of Vaporization: 41.84 kJ/mol
Boiling Point: 200 °C at 760 mmHg
Vapour Pressure: 0.469 mmHg at 25°C 
Melting Point: -12°C
Water Solubility: insoluble
Appearance: clear yellow liquid
Stability: Stable. Combustible. Incompatible with strong oxidizing agents, strong bases 
Product Categories: HALIDE;Aromatic Halides (substituted);Fluorine Compounds;Nitro Compounds

Uses

 3,4-Difluoronitrobenzene (CAS NO.369-34-6) is used as intermediates  in medicine, pesticide.

Safety Profile

Safety Information about 3,4-Difluoronitrobenzene (CAS NO.369-34-6) 
Hazard Codes: IrritantXi,Xn
Risk Statements: 36/37/38-20/21/22
R20/21/22: Harmful by inhalation, in contact with skin and if swallowed. 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36/37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
RIDADR: 2810
WGK Germany: 3
RTECS: CZ5710000
Hazard Note: Irritant
HazardClass: 6.1
PackingGroup: III

Specification

General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Combustible liquid.
Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam. 
Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage: Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container.