76-11-9

Usage

Uses

Used in Air Conditioning and Refrigeration Systems:
1,1,1,2-Tetrachlorodifluoroethane is used as a refrigerant in air conditioning and refrigeration systems for its thermodynamic properties that allow for efficient cooling and heating. Its non-flammable nature and chemical stability make it suitable for these applications.
Used in Aerosol Propellants:
In the past, 1,1,1,2-Tetrachlorodifluoroethane was used as an aerosol propellant for its ability to provide a consistent and effective force to dispense products such as spray paint, deodorants, and other consumer goods. Its non-flammable and stable properties contributed to its selection for this application.
Used in Solvent Production:
1,1,1,2-Tetrachlorodifluoroethane has been utilized in the production of certain solvents due to its chemical properties that make it a versatile and effective component in various industrial processes.
Environmental Impact and Regulation:
Due to its classification as a potent ozone-depleting substance, the production and consumption of 1,1,1,2-Tetrachlorodifluoroethane have been either banned or heavily regulated by the international community under the Montreal Protocol and its subsequent amendments. This has led to the development and adoption of alternative substances that are less harmful to the ozone layer.

InChI:InChI=1/C2Cl4F2/c3-1(4,5)2(6,7)8

Upstream product

• 75-68-3 1-Chloro-1,1-difluoroethane 
• 1649-08-7 1,2-dichloro-1,1-difluoroethane 
• 471-43-2 1,1-dichloro-2,2-difluoroethane 
• 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 
• 379-89-5 1,2,3,3,4,4-hexachloro-1,1-difluoro-butane 
• 75-38-7 Vinylidene fluoride 
• 79-38-9 Chlorotrifluoroethylene 
• 79-35-6 1,1'-dichloro-2,2'-difluoroethene 
• 76-12-0 CFC-112a 
• 101306-34-7 4-chloro-α-chlorohexafluorostyrene 
• 127-18-4 1,1,2,2-tetrachloroethylene 
• 7664-39-3 hydrogen fluoride 
• 7782-50-5 chlorine 
• 354-12-1 1,1,1-trichloro-2,2-difluoroethane 

Downstream Products

• 456-61-1 (2,2-Dichloro-1,1-difluoroethoxy)benzene 
• 354-58-5 1,1,1-Trichloro-2,2,2-trifluoroethane 
• 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 
• 79-35-6 1,1'-dichloro-2,2'-difluoroethene 
• 56354-34-8 2,2-dichloro-1,1-difluoro-1-(phenyl thio) ethane 
• 713-61-1 α,α-difluoro-β,β,β-trichloroethoxybenzene 
• 56354-46-2 2,2-dichloro-1-fluoro-1-(phenyl thio) ethylene 
• 882-33-7 diphenyldisulfane 
• 98481-72-2 (2,2,2-Trichloro-1,1-difluoro-ethoxymethyl)-benzene 
• 76-04-0 2-chloro-2,2-difluoroacetic acid 
• 60984-93-2 4-(2,2-dichloro-1,1-difluoroethoxy)aniline 
• 98481-75-5 4-(1,1-difluoro-2,2,2-trichloroethoxy)aniline 
• 658-45-7 4-Chlor-α,α-difluor-β,β,β-trichlor-phenetol 
• 56-23-5 tetrachloromethane 

Relevant academic research and scientific papers

High surface area chromium(III)fluoride – Preparation and some properties

Reaction of hydrated hydrazinium fluorochromate(III), [N2H6][CrF5]·H2O, with fluorine (F2)in anhydrous hydrogen fluoride (aHF)medium at room temperature yields completely amorphous CrF3-based materials with exceptionally high specific surface areas of 180–420 m2 g?1 (HS-CrF3). The stepwise reaction starts with the oxidative decomposition of the cationic part of the precursor with F2 that gives a CrF3 intermediate with low surface area. In the following step, part of Cr3+ is oxidized to Cr>3+, and in the presence of residual H2O/[H3O]+ species Cr>3+ fluoride oxides are formed. Formation of volatile chromium compounds, mainly CrO2F2, is apparently the key step in HS-CrF3 formation. Removal of these components from the final product reduces the oxygen content, and generates microporosity. The HS-CrF3 materials are completely amorphous with a bulk composition that is close to stoichiometric CrF3. Small amounts of Cr>3+ and oxygen in the final product very likely originate from the retained non-volatile CrOF3. The HS-CrF3 materials are Lewis acids and exhibit a high reactivity towards chlorofluorocarbons (CFCs)evidenced by substantial F/Cl exchange between CFCs and the solid fluoride. High reactivity of these new materials can be ascribed to their nanoscopic nature, exceptionally high surface area, and low levels of impurities. As such, they represent an interesting new class of benchmark fluoride materials applicable in fluorocarbon chemistry.

Process for preparing fluorohalogenethers

A process for preparing perfluorovinylethers having general formula: ???????? RfO-CF=CF2?????(IA) wherein Rf is a C1-C3 alkyl perfluorinated substituent; comprising the following steps: 1a) fluorination with fluorine of olefins of formula: ???????? CY"Y=CY'Cl?????(II) wherein Y, Y' and Y", equal to or different from each other, are H, Cl, Br, with the proviso that Y, Y' and Y" are not contemporaneously hydrogen; and obtainment of fluorohalogencarbons of formula: ???????? FCY"Y-CY'ClF?????(III) wherein Y, Y' and Y" are as above; 2a) dehalogenation or dehydrohalogenation of the fluorohalogencarbons (III) and obtainment of fluorohalogen olefins of formula: ???????? FCYI=CYIIF?????(IV) wherein YI and YII, equal to or different from each other, have the meaning of H, Cl, Br with the proviso that YI and YII are not both H; 3a) reaction between a hypofluorite of formula RfOF and a fluorohalogenolefin (IV), obtaining the fluorohalogenethers of formula: ???????? RfO-CFYI-CF2YII?????(I) wherein YI, YII, equal to or different from each other, are Cl, Br, H with the proviso that YI and YII cannot be contemporaneously equal to H; 4a) dehalogenation or dehydrohalogenation of the compounds (I) and obtainment of the perfluorovinylethers (IA).

Process for preparing fluorohalogenethers

A process for preparing perfluorovinylethers having general formula: [in-line-formulae]RfO—CF═CF2 ??(IA)[/in-line-formulae] wherein Rf is a C1-C3 alkyl perfluorinated substituent; comprising the following steps: 1a) fluorination with fluorine of olefins of formula: [in-line-formulae]CY″Y═CY′Cl ??(II)[/in-line-formulae]wherein Y, Y′ and Y″, equal to or different from each other, are H, Cl, Br, with the proviso that Y, Y′ and Y″ are not contemporaneously hydrogen; and obtainment of fluorohalogencarbons of formula: [in-line-formulae]FCY″Y—CY′ClF ??(III)[/in-line-formulae]wherein Y, Y′ and Y″ are as above; 2a) dehalogenation or dehydrohalogenation of the fluorohalogencarbons (III) and obtainment of fluorohalogen olefins of formula: [in-line-formulae]FCYI═CYIIF ??(IV)[/in-line-formulae]wherein YI and YII, equal to or different from each other, have the meaning of H, Cl, Br with the proviso that YI and YII are not both H; 3a) reaction between a hypofluorite of formula RfOF and a fluorohalogenolefin (IV), obtaining the fluorohalogenethers of formula: [in-line-formulae]RfO—CFYI—CF2YII ??(I)[/in-line-formulae]wherein YI, YII, equal to or different from each other, are Cl, Br, H with the proviso that YI and YII cannot be contemporaneously equal to H; 4a) dehalogenation or dehydrohalogenation of the compounds (I) and obtainment of the perfluorovinylethers (IA).

Materials and methods for the conversion of hydrofluorocarbons

Methods and materials are disclosed for the recovery of valuable hydrofluorocarbons and subsequent conversion to environmentally inert compounds. More specifically methods and materials are provided for recovering hydrofluorocarbons such as HFC-227, HFC-236, HFC-245, HFC-125, HFC-134, HFC-143, HFC-152, HFC-32, HFC-23 and their respective isomers. Processes are provided for converting hydrofluorocarbons such as these to fluoromonomer precursors such as CFC-217, CFC-216, CFC-215, CFC-115, CFC-114, CFC-113, CFC-112, HCFC-22, CFC-12, CFC-13 and their respective isomers. Materials, methods and schemes are provided for the conversion of these fluoromonomer precursors to fluoromonomers such as HFP, PFP, TFP, TFE, and VDF.

Conversion of 1,1,2-trichlorotrifluoroethane to 1,1,1-trichlorotrifluoroethane and 1,1-dichlorotetrafluoroethane over aluminium-based catalysts

Conversion of CCl2FCClF2 to CCl2FCF3 is achieved in the temperature range, 593-713 K, under flow conditions by using the catalysts, β-AlF3 or γ-alumina, prefluorinated with CCl2F2/sub

The behaviour of chlorofluoroethanes on β-aluminium(III) fluoride: A [ 36Cl ] radiotracer study

A [36Cl] radiotracer study of the behaviour of 1,1,2-trichlorotrifluoroethane on β-aluminium(III) fluoride at elevated temperature indicates that the isomerisation of CCl2FCClF2 to CCl3CF3 occurs by an intramolecular process. Isomerisation is followed by dismutation of CCl3CF3 to give CCl2FCF3 and CCl3CClF2. In neither reaction, surface Al-Cl groups are formed. The compound CCl3CClF2 undergoes further reaction, readily, apparently also via dismutation processes.

Thermolytic transformations of polyfluoroorganic compounds 31. Copyrolysis of 4-chlorotetrafluorobenzo trichloride with chlorodifluoromethane

Copyrolysis of 4-chlorotetrafluorobenzotrichloride with chlorodifluoromethane (as the source of difluorocarbene) gave 4-chlorodifluoromethyl-α-chlorohexafluorostyrene, 1,4-dichlorotetrafluorobenzene, and 4-(chlorodifluoromethyl)chlorotetrafluorobenzene along with 4-chloro-α-chlorohexafluorostyrene.Poissible routes for the formation of these products have been offered. - Key words: copyrolysis; 4-chloro-α-chlorohexafluorostyrene; 4-chlorodifluoromethyl-α-chlorohexafluorostyrene; difluorocarbene; polychlorofluorocyclohexadienes.

Stabilization of chlorofluoroalkanes

A method of stabilizing a composition comprising a chlorofluoroalkane and an amine or amine-based polyol comprising incorporating into said composition an effective stabilization promoting amount of at least one but-3-en-1-ol compound and compositions comprising at least one chlorofluoroalkane and a stabilization promoting but-3-en-1-ol.

RADIOTRACERS IN FLUORINE CHEMISTRY. PART IX FLUORINATION OF CHLOROFLUOROETHANES BY CHROMIA CATALYSTS TREATED WITH HYDROGEN FLUORIDE OR HYDROGEN -FLUORIDE

Passage of dichlorotetrafluoroethane isomers or 1,1,2-trichloro-1,2,2-trifluoroethane at temperatures >/= 623 K over chromia catalysts, previously treated with hydrogen fluoride at 623 K, leads to the formation of fluorinated and chlorinated products.Incorporation of fluorine-18 radioactivity in the products is observed when hydrogen -fluoride is used in the catalyst pretreatment, indicating the involvement of a surface fluorinecontaining species.The reactions observed are described in terms of series of F-for-Cl and Cl-for-F halogen exchange reactions occurring at the catalyst surface.

Aluminium Chloride Induced Isomerisation of 1,1,2-Trichlorotrifluoroethane and 1,2-Difluorotetrachloroethane

Under comparable conditions, the isomerisation of 1,1,2-trichlorotrifluoroethane (I) to 1,1,1-trichlorotrifluoroethane (II) is more difficult than the isomerisation of 1,2-difluorotetrachloroethane (III) to 1,1-difluorotetrachloroethane (IV).Advantageously, III was isomerised to IV in the presence of I or II.The degree of isomerisation of the starting compounds I and III was 95-99percent, the preparative yield of IV being 65-74percent.The C-F bond energies in I-IV were derived from correlation diagram and the physico-chemical aspects of the isomerisation are discussed.