354-15-4

Basic information

• Product Name: 1,2-DIFLUORO-1,1,2-TRICHLOROETHANE
• Synonyms: 1,2-DIFLUORO-1,1,2-TRICHLOROETHANE;1,1,2-TRICHLORO-1,2-DIFLUOROETHANE;HCFC-122A;1,2,2-trichloro-1,2-difluoroethane;1,2-difluoro-1,1,2-trichloro-ethan;1,2-difluoro-1,2,2-trichloroethane;1,2-difluorotrichloroethane;ethane,1,1,2-trichloro-1,2-difluoro-
• CAS NO: 354-15-4
• Molecular Formula: C₂HCl₃F₂
• Molecular Weight: 169.39
• Product Categories: HCFC;refrigerants
• Mol File: 354-15-4.mol
• Article Data: 5

Chemical Properties

• Melting Point: -173°C
• Boiling Point: 72°C
• Flash Point: °C
• Appearance: /
• Density: 1,571 g/cm3
• Vapor Pressure: 105mmHg at 25°C
• Refractive Index: 1.3942
• CAS DataBase Reference: 1,2-DIFLUORO-1,1,2-TRICHLOROETHANE(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-DIFLUORO-1,1,2-TRICHLOROETHANE(354-15-4)
• EPA Substance Registry System: 1,2-DIFLUORO-1,1,2-TRICHLOROETHANE(354-15-4)

Safety Data

• Hazard Codes: Xi
• Statements: 36/37/38
• Safety Statements: 26-36/37/39
• HazardClass: OZONE DEPLETER
• Hazardous Substances Data: 354-15-4(Hazardous Substances Data)

Usage

General Description

1,2-Difluoro-1,1,2-Trichloroethane, also known as CFC-113a, is a chemical compound with the formula C2HCl2F2. It is a colorless, volatile liquid that was commonly used as a refrigerant and as a propellant in aerosol spray cans. However, due to its ozone-depleting properties, its production and use has been phased out under the Montreal Protocol on Substances that Deplete the Ozone Layer. CFC-113a has also been found to have a high global warming potential, leading to further restrictions on its use and production. Its chemical structure and properties make it a potent greenhouse gas that contributes to climate change and ozone depletion. As a result, CFC-113a is now considered to be a harmful and environmentally hazardous chemical.

InChI:InChI=1/C2HCl3F2/c3-1(6)2(4,5)7/h1H

Upstream product

• 79-01-6 Trichloroethylene 
• 76-12-0 CFC-112a 
• 624-72-6 1,2-difluoroethane 
• 373-91-1 hypofluorous acid trifluoromethyl ester 

Downstream Products

• 354-23-4 1,2-dichloro-1,2,2-trifluoroethane 
• 359-04-6 1-chloro-1,2-difluoroethene 
• 76-12-0 CFC-112a 
• 598-88-9 1,2-dichloro-1,2-difluoroethene 
• 354-33-6 1,1,1,2,2-pentafluoroethane 

Relevant articles and documents

FLUORINATION OF HYDROGEN-CONTAINING OLEFINS WITH ELEMENTAL FLUORINE

The hydrohalo-olefins cis and trans CHCl=CHCl, CHCl=CCl2, CHCl=CH-CH2Cl and CH2=CCl-CH2Cl have been fluorinated with elemental fluorine to give good yields of hydrohalofluoroalkanes.The best operational conditions for F2 addition to the double bond rather than hydrogen and/or chlorine atom substitution, dimerization and oligomerization of radical intermediates have been studied.Pleriminary studies on the reaction of Freon 12 and Freon 22 towards elemental fluorine have also been carried out.

PROCESS FOR THE FLUORINATION OF HALOOLEFINS

A process for the fluorination of haloolefins with elemental fluorine in the presence of anhydrous HF proceeds with high yield and selectivity in the product deriving from the addition of fluorine to the carbon-carbon double bond.

The chlorination of 1,2-difluoroethane (HFC-152)

The photochlorination of CH2FCH2F yields CH2FCCl2F and CHClFCHClF, both of which were considered to be potential replacements for CFC-113 (CCl2FCF2Cl) based on their boiling points (48 deg C and 59 deg C, respectively).The CHClFCHClF/CH2FCCl2F ratio can be controlled by the choice of solvents.In aromatic solvents, the reactivity of the chlorine radical is reduced, increasing the amount of CH2FCCl2F produced.Relative rates in CCl4 and in the presence of water were compared to rates in aromatic solvents.Both CH2FCCl2F and CHClFCHClF failed in early toxicity tests and will thus not be pursued as HCFC replacements for CFC-113.