1649-08-7

Basic information

• Product Name: 1,2-Dichloro-1,1-difluoroethane
• Synonyms: 1,1-Difluoro-1,2-dichloroethane;1,2-Dichloro-1,1-difluoroethane; 1,2-Dichloro-2,2-difluoroethane; CFC 132b; F132b; FC 132b; Fron 132b; HCFC 132b; R 132b
• CAS NO: 1649-08-7
• Molecular Formula: C₂H₂Cl₂F₂
• Molecular Weight: 134.9400864
• EINECS: 216-714-2
• Mol File: 1649-08-7.mol
• Article Data: 15

Chemical Properties

• Melting Point: -1012℃
• Boiling Point: 46-47°C
• Flash Point: °C
• Appearance: /
• Density: 1,416 g/cm³
• Water Solubility: 170 mg l-1 (e)
• CAS DataBase Reference: 1,2-Dichloro-1,1-difluoroethane(CAS DataBase Reference)
• NIST Chemistry Reference: 1,2-Dichloro-1,1-difluoroethane(1649-08-7)
• EPA Substance Registry System: 1,2-Dichloro-1,1-difluoroethane(1649-08-7)

Safety Data

• Hazardous Substances Data: 1649-08-7(Hazardous Substances Data)

Usage

General Description

1,2-Dichloro-1,1-difluoroethane, also known as Freon 142b, is a chemical compound with the molecular formula C2H2Cl2F2. It is a colorless, volatile liquid with a faint ether-like odor and is primarily used as a refrigerant in various industrial applications. It is also used as a blowing agent in the production of foam materials and as a solvent in cleaning and degreasing operations. However, 1,2-Dichloro-1,1-difluoroethane is considered a greenhouse gas and an ozone-depleting substance, leading to its phase-out and replacement with more environmentally friendly alternatives. It is important to handle and dispose of this chemical with care to minimize its impact on human health and the environment.

InChI:InChI=1/C2H2Cl2F2/c3-1-2(4,5)6/h1H2

Upstream product

• 75-37-6 1,1-difluoroethane 
• 75-68-3 1-Chloro-1,1-difluoroethane 
• 338-65-8 1-chloro-2,2-difluoroethane 
• 811-95-0 1,1,2-trichloro-1-fluoroethane 
• 630-20-6 1,1,1,2-tetrachoroethane 
• 359-10-4 1-Chloro-2,2-difluoroethene 
• 79-01-6 Trichloroethylene 
• 75-38-7 Vinylidene fluoride 
• 1768-32-7 sulfur bis(trifluoromethyl)amide chloride 
• 75-09-2 dichloromethane 
• 75-35-4 1,1-Dichloroethylene 
• 75-88-7 1,1,1-trifluoro-2-chloroethane 
• 127-18-4 1,1,2,2-tetrachloroethylene 
• 7664-39-3 hydrogen fluoride 

Downstream Products

• 350-82-3 (2-chloro-1-fluoro-vinyl)-m-tolyl ether 
• 369-63-1 (2-chloro-1,1-difluoro-ethyl)-m-tolyl ether 
• 351-08-6 (2-chloro-1-fluoro-vinyl)-p-tolyl ether 
• 369-65-3 (2-chloro-1,1-difluoro-ethyl)-p-tolyl ether 
• 457-44-3 (2-chloro-1-fluoro-vinyl)-phenyl ether 
• 500-31-2 1-chloro-2,2-difluoroethyl phenyl ether 
• 347-67-1 (2-chloro-1-fluoro-vinyl)-o-tolyl ether 
• 366-41-6 (2-chloro-1,1-difluoro-ethyl)-o-tolyl ether 
• 76-11-9 1,1-difluorotetrachloroethane 
• 75-88-7 1,1,1-trifluoro-2-chloroethane 
• 75-38-7 Vinylidene fluoride 
• 359-10-4 1-Chloro-2,2-difluoroethene 
• 354-21-2 1,1,2-trichloro-2,2-difluoroethane 
• 56354-30-4 2-Chlor-1,1-difluorethyl-phenyl-sulfid 

Relevant articles and documents

CHEMICAL REACTIONS AND LASERS: ELEMENTARY STEPS AND COMPLEX SYSTEMS

In recent years, various methods have been developed to observe and influence the course of chemical reactions using laser radiation.By selectively increasing the translational, rotational, and vibrational energies of the reaction partners with high intensity visible and UV lasers, direct insight can be gained into the molecular course of the breaking and the re-forming of chemical bonds.The production of free radicals by laser radiation can be used in chemical synthesis for the production of monomers.As example the kinetics of the UV-laser induced dehydrochlorination of CH3CClF2 is described.The application of linear and non-linear laser spectroscopic methods allows a non-intrusive observation of the interaction of transport processes with chemical reactions used with high temporal, spectral and spatial resolution.As a simple test system the ignition of O2-O3 mixtures by irradiation with a CO2 laser along the axis of a cylindrical vessel is considered.Mathematical simulation of the ignition process is simulated mathematically by solving the corresponding system of conservation equations.Experimental data are presented for velocity components of the flame front from IR-UV double resonance experiments and for the temperature history from infrared absorption measurements using tuneable diode lasers.

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Catalytic fluorination of 1,1,1-trifluoro-2-chloro-ethane in the presence of oxygen over chromium based catalyst doped or not by zinc supported over partially fluorinated alumina

The addition of zinc in low amount to chromium based catalyst supported over partially fluorinated alumina has a positive effect for the fluorination reaction of CF3CH2Cl in the presence of dioxygen in order to prevent the catalyst deactivation. However, under these operating conditions, the Deacon reaction by reaction with HCl produced by Cl/F exchanges could be involved. The formation of various by-products was observed corresponding to the addition of HCl or Cl2 into halogenated double bonds.

A study of trichloroethylene hydrofluorination using a kinetic model

The kinetic features of catalytic hydrofluorination of trichloroethylene and 2-chloro-1,1,1-trifluoroethane on chromium fluoride/magnesium fluoride catalyst were studied. The effect of pressure and addition of various components of the reaction mixture at the reactor inlet was studied using the developed model.

Preparation method of 1, 1-difluoro-2-vinyl iodide

The invention discloses a preparation method of 1, 1-difluoro-2-vinyl iodide. The method comprises the following steps: (1) simultaneously introducing vinylidene fluoride and chlorine into a tubular reactor for reacting, condensing, and collecting the reaction product to obtain 1, 2-dichloro-1, 1-difluoroethane; (2) reacting the 1, 2-dichloro-1, 1-difluoroethane with KI in a solvent, after the reaction is finished, performing cooling, and discharging, drying the reaction liquid by distillation, and rectifying the obtained distilled liquid to obtain 1-chloro-1, 1-difluoro-2-iodoethane; and (3) reacting the obtained 1-chloro-1, 1-difluoro-2-iodoethane under the action of a magnetic catalyst, cooling and discharging after the reaction is finished, placing the reaction liquid in an external magnetic field to separate the catalyst, and rectifying to obtain the 1, 1-difluoro-2-ethylene iodide product. The method has the advantages of simple process, easily available raw materials, high yield and environmental protection.

PHOTOCHLORINATION AND FLUORINATION PROCESS FOR PREPARATION OF FLUORINE-CONTAINING HYDROCARBONS

A process is disclosed for increasing the fluorine content of at least one compound selected from halohydrocarbons and hydrocarbons. The process involves (a) directing light from a light source through the wall of a reactor to interact with reactants comprising chlorine and said at least one compound in said reactor, thereby producing a halogenated hydrocarbon having increased chlorine content by photochlorination, and (b) reacting said halogenated hydrocarbon produced by the photochlorination in (a) with HF; and is characterized by the light directed through the reactor wall being directed through a poly(perhaloolefin) polymer.