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352-32-9

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352-32-9 Usage

Chemical Properties

clear colorless to slightly yellow liquid

General Description

A colorless liquid with an aromatic odor. May float or sink in water.

Air & Water Reactions

Highly flammable.

Reactivity Profile

p-Fluorotoluene may be incompatible with strong oxidizing and reducing agents. May be incompatible with amines, nitrides, azo/diazo compounds, alkali metals, and epoxides. Products of combustion contain toxic fluoride fumes.

Fire Hazard

Special Hazards of Combustion Products: Toxic fumes of fluoride

Safety Profile

Moderately toxic by parenteral route. A very dangerous fire hazard when exposed to heat or flame; can react vigorously with oxibzing materials. When heated to decomposition it emits toxic fumes of F-. See also FLUORIDES.

Purification Methods

Purify it as for o-fluorotoluene. [Beilstein 5 H 290, 5 III 677, 5 IV 799.]

Check Digit Verification of cas no

The CAS Registry Mumber 352-32-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,5 and 2 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 352-32:
(5*3)+(4*5)+(3*2)+(2*3)+(1*2)=49
49 % 10 = 9
So 352-32-9 is a valid CAS Registry Number.
InChI:InChI=1/C7H7F/c1-6-2-4-7(8)5-3-6/h2-5H,1H3

352-32-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017

1.Identification

1.1 GHS Product identifier

Product name p-Fluorotoluene

1.2 Other means of identification

Product number -
Other names Benzene, 1-fluoro-4-methyl-

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:352-32-9 SDS

352-32-9Relevant articles and documents

Liquid-phase fluorination of aromatic compounds by elemental fluorine

Conte, L.,Gambaretto, G. P.,Napoli, M.,Fraccaro, C.,Legnaro, E.

, p. 175 - 180 (1995)

The fluorination of aromatic compounds (benzene, toluene, phenol and benzoic acid) by elemental fluorine diluted with nitrogen has been investigated in various solvents (Freon 11, chloroform, methanol, trifluoroacetic acid, 2,2,2-trifluoroethanol, water) in order to define the influence of the experimental conditions on the reaction.Experiments have been carried out by varying the temperature, the substrate concentration in solution, the molar ratio of fluorine to substrate, and the concentration of fluorine in the fluorine/nitrogen mixture.In all cases, the effects on the yield of fluorinated products were studied.Monofluorinated compounds were mainly found in the reaction mixture, the isomers formed being in accord with the mechanism for electrophilic substitution.The highest yield of monofluorinated products was obtained with polar solvents and the following order was found: CFCl3 CHCl3 CH3OH CF3CH2OH CF3COOH.Interesting results were also found using particular additives (for instance, KOH or C4F9SO3Na in methanol) or water as the solvent.A direct relationship was observed between the yield of monofluorinated compounds and the molar ratio of fluorine to substrate, which has to be less than one in order to obtain high yields.In contrast, low selectivity, expressed as the yield ratio of ortho to para (or meta) isomers, was found. - Keywords: Fluorination; Aromatic compounds; Elemental fluorine; Isomer formation; Solvent effects; Additive effects

Direct fluorination of toluene using elemental fluorine in gas/liquid microreactors

J?hnisch,Baerns,Hessel,Ehrfeld,Haverkamp,L?we,Wille,Guber

, p. 117 - 128 (2000)

Direct fluorination of toluene, pure or dissolved in either acetonitrile or methanol, using elemental fluorine was investigated in gas/liquid microreactors, namely a falling film microreactor and a micro bubble column. The experiments included measurements at high substrate concentrations and at high fluorine contents diluted in a nitrogen carrier gas, e.g. up to 50vol.% fluorine. Results obtained were compared to the performance of a laboratory bubble column which served as a technological benchmark. Due to the formation of liquid layers of only a few tens of micrometers thickness, the microreactors provide very large interfacial areas, e.g. up to 40,000m2/m3. These values exceed by far those of the laboratory bubble column as well as all other devices applied in practice. The potential for enhancing mass and heat transfer was verified by several experiments resulting in an increase in conversion and selectivity for the microreactors compared to the laboratory benchmark. For the falling film microreactor, yields of up to 28% of monofluorinated ortho and para products for a degree of toluene conversion of 76% were obtained. These values are of the same order as described for the industrially applied Schiemann process. Space-time yields of the microreactors, when referred to the reaction channel volume, were orders of magnitude higher than those of the laboratory bubble column. Taking into account the construction material needed, the corresponding figures of merit, for an idealized geometry as well as the existing total reactor geometry, still indicate technological and economic benefits. A variation of operating conditions for the direct fluorination revealed that conversion can be increased in the microreactors by using higher fluorine-to-toluene ratios and reaction temperatures. The choice of solvent is also essential, with acetonitrile yielding much better results than methanol.

Grakauskas,V.

, p. 723 - 728 (1970)

Full continuous flow synthesis process of fluorine-containing aromatic hydrocarbon compounds

-

Paragraph 0081-0094, (2021/04/07)

The invention provides a full continuous flow synthesis process of a fluorine-containing aromatic hydrocarbon compound, and belongs to the technical field of preparation of halogenated hydrocarbon carbocyclic organic compounds. Arylamine and hydrogen fluoride are pumped into a thermostat A and a thermostat B respectively and flow into a micro-channel reactor C for a salt forming reaction after constant temperature treatment, and a sulfuric acid solution of nitrosyl sulfuric acid is pumped into a thermostat D and flows into a micro-channel reactor E together with a salt forming product flowing out of the micro-channel reactor C for a diazotization reaction after constant temperature treatment. A product flows into a micro-channel reactor F to be subjected to a thermal decomposition reaction, is cooled by a cooler G and then enters a three-phase separator H to be continuously separated, nitrogen is discharged after being subjected to spraying deacidification, a fluorine-containing aromatic hydrocarbon crude product is subjected to continuous alkali washing, continuous drying and continuous rectification to obtain a fluorine-containing aromatic hydrocarbon finished product, and a hydrofluoric acid and sulfuric acid mixture is subjected to continuous distillation to obtain a product. The hydrogen fluoride and sulfuric acid are obtained. The full continuous flow synthesis process has the advantages of high reaction yield, excellent product quality, good production safety, less pollutant discharge and the like.

Coupling Photocatalysis and Substitution Chemistry to Expand and Normalize Redox-Active Halides

Rathnayake, Manjula D.,Weaver, Jimmie D.

supporting information, p. 2036 - 2041 (2021/04/05)

Photocatalysis can generate radicals in a controlled fashion and has become an important synthetic strategy. However, limitations due to the reducibility of alkyl halides prevent their broader implementation. Herein we explore the use of nucleophiles that can substitute the halide and serve as an electron capture motif that normalize the variable redox potentials across substrates. When used with photocatalysis, bench-stable, commercially available collidinium salts prove to be excellent radical precursors with a broad scope.

Hydrodehalogenation of organohalides by Et3SiH catalysed by group 4 metal complexes and B(C6F5)3

?ilková, Nadě?da,Dunlop, David,Horá?ek, Michal,Lama?, Martin,Pinkas, Ji?í

supporting information, p. 2771 - 2775 (2020/03/13)

Catalytic hydrodehalogenation (HDH) of aliphatic organohalides such as trifluorotoluenes by Et3SiH proceeds in the presence of readily available group 4 metal compounds: Cp′2MX2 (Cp′ = η5-C5H5 or η5-C5Me5; X = F, Cl, or Me; M = Ti, Zr, or Hf), CpTiCl3 and TiCl4 with a catalytic amount of B(C6F5)3. The use of metallocenes in combination with the borane activator leads to a better selectivity of the reaction, i.e., suppression of Friedel-Crafts alkylations of arenes.

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