Chlorodifluoroethane

Chlorobenzene Producers Association (CPA), 270 p-Chlorobenzotrichloride, 39 Chlorobenzotrifluorides, 39 Chlorobromomethane, 39 Chlorodifluorobromomethane, 39 Chlorodifluoroethane, 39 Chlorodifluoromethane, 39 Chlorodiphenyl, 39 Chloroethanol, 39 2-Chloroethyl vinyl ether, 39 Chlorofluorocarbons, 39 Chloroform, 40 Chloromethyl anilines, 40 Chloromethyl ether, 40 Chloromethyl methyl ether, 40 2-(4-Chloro-2-methylphenoxy) propionic acid, 40 Chloromethyl phenyl isocyanate, 40... 

Greenberg LA, Lester D Toxicity of the tetra-chlorodifluoroethanes. Arch Ind Hyg Occup Med 2 345-347, 1950... 

POLVINYLIDENE FLUORIDE. This product is made by the free-radical chain polymerization of vinylidene fluoride (H2C=CF2). This odorless gas which has a boiling point of —82°C is produced by the thermal dehydrochlorination of 1,1,1-chlorodifluoroethane or by the dechlorination of 1,2-dichloro-l.l-difluoro-ethane. As shown by the following equations, 1,1,1-chlorodifluoroethane may be obtained by the bydroflnorination and... 

CHLORO-l,l-DIFLUOROETHANE see CFX250 CHLORODIFLUOROETHANES (DOT) see CFX250 CHLORODIFLUOROMETHANE see CFX500 CHLORODIFLUOROMETHANE see CFX500 CHLORODIFLUOROMETHANE (ACGIH,DOT,OSHA) see CFX500... 

Chlorodifluoroethane is a nonreactive and stable material. The liquefied gas is stable when used as a propellant and should be stored in a metal cylinder in a cool, dry place. 

Compatible with the usual ingredients used in the formulation of pharmaceutical aerosols. Chlorodifluoroethane can react vigorously with oxidizing materials. 

Chlorodifluoroethane is a hydrochlorofluorocarbon (HCFC) aerosol propellant previously used in topical pharmaceutical formulations. However, it is no longer permitted for use in pharmaceutical formulations because its harmful effects on the environment. It was also generally used in conjunction with difluoroethane to form a propellant blend with a specific gravity of 1. Chlorodifluoroethane was also used in combination with chlorodifluoromethane and hydrocarbon propellants. Chlorodifluoroethane may be used as a vehicle for dispersions and emulsions. 

Chlorodifluoroethane is a liquefied gas and exists as a liquid at room temperature when contained under its own vapor pressure, or as a gas when exposed to room temperature and atmospheric pressure. The liquid is practically odorless and colorless. Chlorodifluoroethane is noncorrosive and nonirritating. 

Chlorodifluoroethane is prepared by the chlorination of difluoroethane in the presence of a suitable catalyst hydrochloric acid is also formed. The chlorodifluoroethane is purified to remove all traces of water and hydrochloric acid, as well as traces of the starting and intermediate materials. 

Chlorodifluoroethane is no longer permitted for use as an aerosol propellant in topical pharmaceutical formulations. It is generally regarded as an essentially nontoxic and nonirritant material. 

Chlorodifluoroethane is usually encountered as a liquefied gas and appropriate precautions for handling such materials should be taken. Eye protection, gloves, and protective clothing are recommended. Chlorodifluoroethane should be handled in a well-ventilated environment. Chlorofluorocarbon vapors are heavier than air and do not support life therefore, when cleaning large tanks that have contained chlorofluorocarbons, adequate provisions for oxygen supply in the tanks must be made in order to protect workers cleaning the tanks. 

Chlorodifluoroethane is flammable see Section 10. When heated to decomposition, chlorodifluoroethane emits toxic fumes. 

Difluoroethane is useful as an aerosol propellant in that it shows greater miscibility with water than some other fluorocarbons and when combined with chlorodifluoroethane will produce a mixture with a specific gravity of 1. For a discussion of the numerical nomenclature applied to this aerosol propellant, see Ghlorofluorocarbons. 

Beilstein Handbook Reference) BRN 1731584 CFC 142b Chlorodifluoroethane Chloroethyl-idene fluoride Chlorofluorocarbon 142b Difluoro-1-chloroethane EINECS 200-... 

The flammability of halogenated hydrocarbons shows wide variation. While compounds such as carbon tettachloride and chloroform are noncombustible liquids, there are substances such as Halons which are used for fire-extinguishing purposes. Several low-molecular-weight halocarbons are flammable gases or liquids. Many Ci and C2 fluorocarbons are flammable gases. These include tri-fluoromethane [75-46-7], 1,1-difluoroethane [75-37-6], chlorodifluoroethane [25497-29-4], chlorotrifluoroethylene [79-38-9],... 

PVDF is correctly named poly(l,l-difluoroethylene) and represented by (-CF2CH2-)n- It is a hard, tough thermoplastic fluoropolymer. PVDF is prepared by free-radical initiated polymerization, either in suspension or (usually) in emulsion systems. The basic raw material for PVDF is vinylidene fluoride (CH2=CF2), a preferred synthesis of which is dehydrochlorination of chlorodifluoroethane. 

Synonyms Chlorodifluoroethane 1-Chloro-1,1-difluoroethane Chlorodifluoroethanes Chloroethylidene fluoride a-Chloroethylidene fluoride... 

Chloro-1,1-difluoroethane Chlorodifluoroethanes. See 1,1,1-Chlorodifluoroethane Chlorodifluoromethane CAS 75-45-6 EINECS/ELINCS 200-871-9 UN 1018 (DOT)... 

Chlorofenvinphos. See Chlorfenvinphos Chloroflo 40, Chloroflo 40L, Chloroflo 42, Chloroflo 42-L. See Paraffin, chlorinated Chlorofluorocarbon 22. See Chlorodifluoromethane Chlorofluorocarbon 113. See Trichlorotrifluoroethane Chlorofluorocarbon 142b. See 1,1,1-Chlorodifluoroethane Chlorofluoromethane CAS 593-70-4... 

Chlorodifluoroethane Difluorochloromethane. See Chlorodifluoromethane Difluorodibromomethane. See Dibromodifluoromethane Difluorodichloromethane. See Dichlorodifluoromethane 4,4 -Difluorodiphenyl sulfone CAS 383-29-9 EINECS/ELINCS 206-847-4 Synonyms Bis (4-fluorophenyl) sulfone 4-Fluorophenyl sulfone... 

Difluoromethoxy)-a-(1-methylethyl) benzeneacetic acid cyano (3-phenoxyphenyl) methyl ester. See Flucythrinate Difluoromonochloroethane. See 1,1,1-Chlorodifluoroethane Difluoromonochloromethane. See Chlorodifluoromethane 1,1 -DifIuoro-1,2,2,2-tetrachloroethane. See... 

Ethane, bromo-. See Ethyl bromide Ethanecarboxylic acid. See Propionic acid Ethane, 1-chloro-1,1-difluoro-. See 1,1,1-Chlorodifluoroethane Ethane, compressed. See Ethane Ethanedial 1,2-Ethanedial. SeeGlyoxal Ethanediamide. See Oxamide Ethanediamide, n-(2-ethoxyphenyl)-n -(4-ethylphenyl). See 2-Ethyl, 2 -ethoxy-oxalanilide... 

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