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

General Description

1,1,1,2-Tetrachlorodifluoroethane, also known as CFC-112, is a colorless, odorless, non-flammable chemical compound used as a refrigerant and aerosol propellant. It is a chlorofluorocarbon (CFC) and has been widely used in air conditioning and refrigeration systems, as well as in the production of certain aerosol propellants and solvents. However, due to its detrimental impact on the ozone layer, its use has been largely phased out under the Montreal Protocol and its subsequent amendments. 1,1,1,2-Tetrachlorodifluoroethane has been identified as a potent ozone-depleting substance, and its production and consumption are either banned or heavily regulated by the international community.

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

Upstream product

• 75-37-6 1,1-difluoroethane 
• 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 
• 379-89-5 1,2,3,3,4,4-hexachloro-1,1-difluoro-butane 
• 75-38-7 Vinylidene fluoride 
• 76-13-1 1,1,2-Trichloro-1,2,2-trifluoroethane 
• 76-12-0 CFC-112a 
• 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 
• 79-35-6 1,1'-dichloro-2,2'-difluoroethene 
• 354-58-5 1,1,1-Trichloro-2,2,2-trifluoroethane 

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 
• 60984-93-2 4-(2,2-dichloro-1,1-difluoroethoxy)aniline 
• 98481-75-5 4-(1,1-difluoro-2,2,2-trichloroethoxy)aniline 
• 56-23-5 tetrachloromethane 
• 127-18-4 1,1,2,2-tetrachloroethylene 
• 75-71-8 Dichlorodifluoromethane 
• 374-07-2 1,1-dichlorotetrafluoroethane 
• 354-56-3 freon-111 
• 75-38-7 Vinylidene fluoride 
• 354-24-5 chlordifluoroacetyl chloride 

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).

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.