76-11-9

Basic information

• Product Name: 1,1,1,2-Tetrachlorodifluoroethane
• Synonyms: 1,1-Difluoro-1,2,2,2-tetrachloroethane;1,1-Difluoroperchloroethane;1,2,2,2-Tetrachloro-1,1-difluoroethane;2,2-Difluoro-1,1,1,2-tetrachloroethane
• CAS NO: 76-11-9
• Molecular Formula: C₂Cl₄F₂
• Molecular Weight: 203.8302064
• EINECS: 200-934-0
• Mol File: 76-11-9.mol
• Article Data: 10

Chemical Properties

• Melting Point: 39-44℃
• Boiling Point: 93.3 °C at 760 mmHg
• Flash Point: 11.8 °C
• Appearance: colorless crystalline solid
• Density: 1.726 g/cm³
• CAS DataBase Reference: 1,1,1,2-Tetrachlorodifluoroethane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1,1,2-Tetrachlorodifluoroethane(76-11-9)
• EPA Substance Registry System: 1,1,1,2-Tetrachlorodifluoroethane(76-11-9)

Safety Data

• Hazard Codes: Xi:Irritant;; <
• Statements: R36/37/38:Irritating to eyes, respiratory system and skin.; R59:Dangerous for the ozon layer.
• Safety Statements: S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.; S37/39:Wear suitable g
• Hazardous Substances Data: 76-11-9(Hazardous Substances Data)

Usage

Description

1,1,1,2-Tetrachlorodifluoroethane, also known as CFC-112, is a colorless, odorless, non-flammable chlorofluorocarbon (CFC) compound that has been widely used as a refrigerant and aerosol propellant. It is known for its stable properties and effectiveness in various applications, although its use has been largely phased out due to its detrimental impact on the ozone layer.

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 
• 354-21-2 1,1,2-trichloro-2,2-difluoroethane 
• 354-12-1 1,1,1-trichloro-2,2-difluoroethane 
• 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 
• 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 
• 75-37-6 1,1-difluoroethane 
• 354-58-5 1,1,1-Trichloro-2,2,2-trifluoroethane 
• 79-35-6 1,1'-dichloro-2,2'-difluoroethene 

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 
• 713-61-1 α,α-difluoro-β,β,β-trichloroethoxybenzene 
• 56354-34-8 2,2-dichloro-1,1-difluoro-1-(phenyl thio) ethane 
• 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 
• 99299-69-1 1-(2,2-dichloro-1,1-difluoroethoxy)-4-methoxybenzene 
• 98481-70-0 1-Methoxy-4-(2,2,2-trichloro-1,1-difluoro-ethoxy)-benzene 

Relevant articles and documents

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: [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).

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