Hydrochlorofluorocarbon azeotropic or azeotropic-like mixture

Abstract

A hydrochlorofluorocarbon azeotropic or azeotropic-like mixture comprising at least one member selected from the group consisting of hydrogen-containing fluoropropanes of the formula I:CH.sub.a Cl.sub.b F.sub.c CF.sub.2 CH.sub.x Cl.sub.y F.sub.z (I)wherein a+b+c=3, x+y+z=3, a+x.gtoreq.1, b+y.gtoreq.1, and 0.ltoreq.a,b,c,x,y,z.ltoreq.3, and at least one member selected from the group of compounds II consisting of halogenated hydrocarbons having a boiling point of from 20.degree. to 85.degree. C. other than said hydrochlorofluoropropanes, hydrocarbons having a boiling point of from 20.degree. to 85.degree. C. and alcohols having from 1 to 4 carbon atoms.

Description

TECHNICAL FIELD

The present invention relates to a novel hydrochlorofluorocarbon azeotropic or azeotropic-like mixture which can be used as a chlorofluorocarbon alternative and which has excellent properties as a solvent and so on.

BACKGROUND ART

Chlorofluorocarbon compounds (hereinafter referred simply as CFCs) have little toxicity and are, in many cases, non-flammable and chemically stable. Various CFCs having different boiling points are available. By virtue of such properties, 1,1,2-trichloro-1,2,2-trifluoroethane (R113) is used as a solvent or a blowing agent; trichloromonofluoromethane (R11) is used as a blowing agent or a propellant; and dichlorodifluoromethane (R12) is used as a propellant or a refrigerant.

Chemically stable R11, R12 and R113 have long lifetime in the troposphere and reach the stratosphere, where they will be dissociated by solar radiation to release chlorine radicals, which initiate a chain reaction with ozone and deplete the ozone layer. Accordingly, the regulations for limiting the use of such conventional CFCs have been implemented. Therefore, a research has been actively conducted to develop a CFC alternative which scarcely depletes the ozone layer.

DISCLOSURE OF THE INVENTION

It is an object of the present invention to provide a mixture containing a novel hydrochlorofluoropropane having 3 carbon atoms, which has various excellent properties equal to conventional CFCs and which is useful as a CFC alternative.

The present invention provides a hydrochlorofluorocarbon azeotropic or azeotropic-like mixture comprising at least one member selected from the group consisting of hydrochlorofluoropropanes of the formula I:

CH.sub.a Cl.sub.b F.sub.c CF.sub.2 CH.sub.x Cl.sub.y F.sub.z (I) wherein a+b+c=3, x+y+z=3, a+x.gtoreq.1, b+y.gtoreq.1, and 0.ltoreq.a,b,c,x,y,z.ltoreq.3, and at least one member selected from the group of compounds II consisting of halogenated hydrocarbons having a boiling point of from 20.degree. to 85.degree. C. other than the above hydrochlorofluoropropanes, hydrocarbons having a boiling point of from 20.degree. to 85.degree. C. and alcohols having from 1 to 4 carbon atoms.

The mixture of the present invention is non-flammable or hardly flammable and may take a form of an azeotropic composition or an azeotropic-like composition. Particularly when used as a solvent, it provides properties equal or superior to conventional 1,1,2-trichlorotrifluoroethane (R113). Therefore, it is very useful as an alternative for R113. Further, no substantial change in the composition was observed when boiling or evaporating. Therefore, it may be used in the same manner as a conventional single CFC, whereby it has a merit in that no substantial change in the conventional technique is required.

BEST MODE FOR CARRYING OUT THE INVENTION

The hydrochlorofluoropropanes of the formula I in the present invention contain a hydrogen atom and a fluorine atom as essential elements and may further contain a chlorine atom. Specifically, they include the following compounds:

CClF.sub.2 CF.sub.2 CHCl.sub.2 (R224ca) CCl.sub.2 FCF.sub.2 CHClF (R224cb) CF.sub.3 CF.sub.2 CHCl.sub.2 (R225ca) CClF.sub.2 CF.sub.2 CHClF (R225cb) CClF.sub.2 CF.sub.3 CH.sub.2 Cl (R234cc) CHF.sub.2 CF.sub.2 CHClF (R235ca) CH.sub.3 CF.sub.2 CCl.sub.2 F (R243cc) CHF.sub.2 CF.sub.2 CH.sub.2 Cl (R244ca) CH.sub.2 ClCF.sub.2 CH.sub.2 Cl (R252ca) CHCl.sub.2 CF.sub.2 CH.sub.3 (R252cb) CH.sub.3 CF.sub.2 CH.sub.2 Cl (R262ca) CHF.sub.2 CF.sub.2 CCl.sub.2 F (R225cc) CHClFCF.sub.2 CHCl.sub.2 F (R234ca) CHF.sub.2 CF.sub.2 CHCl.sub.2 (R234cb) CH.sub.2 FCF.sub.2 CCl.sub.2 F (R234cd) CF.sub.3 CF.sub.2 CH.sub.2 Cl (R235cb) CClF.sub.2 CF.sub.2 CF.sub.2 CH.sub.2 F (R235cc) CH.sub.2 ClCF.sub.2 CHClF (R243ca) CH.sub.2 FCF.sub.2 CHCl.sub.2 (R243cb) CH.sub.2 FCF.sub.2 CHClF (R244cb) CClF.sub.2 CF.sub.2 CH.sub.3 (R244cc) CH.sub.2 FCF.sub.2 CH.sub.2 Cl (R253ca) CF.sub.3 CF.sub.2 CHClF (R253cb) CF.sub.3 CF.sub.2 CHClF (R226ca) CClF.sub.2 CF.sub.2 CHF.sub.2 (R226cb) CCl.sub.3 CF.sub.2 CHCl.sub.2 (R222c) CCl.sub.2 FCF.sub.2 CHCl.sub.2 (R223ca) CCl.sub.3 CF.sub.2 CHClF (R223cb) CCl.sub.3 CF.sub.2 CHF.sub.2 (R224cc) CHCl.sub.2 CF.sub.2 CHCl.sub.2 (R232ca) CCl.sub.3 CF.sub.2 CH.sub.2 Cl (R232cb) CCl.sub.2 FCF.sub.2 CH.sub.2 Cl (R233cb) CHCl.sub.2 CF.sub.2 CHClF (R233ca) CCl.sub.3 CF.sub.2 CH.sub.2 F (R233cc) CCl.sub.3 CF.sub.2 CH.sub.3 (R242cb) CHCl.sub.2 CF.sub.2 CH.sub.2 Cl (R242ca)

Among them, preferred are R225ca, R225cb, R244ca, R244cb, R235ca and R243cc.

The halogenated hydrocarbons having a boiling point of from 20.degree. to 85.degree. C. other than the hydrochlorofluoropropanes of the formula I, include chlorinated hydrocarbons, fluorinated hydrocarbons and brominated hydrocarbons having from 1 to 4 carbon atoms.

The chlorinated hydrocarbons having from 1 to 4 carbon atoms, include dichloromethane, trichloromethane, trans-1,2-dichloroethylene, cis-1,2-dichloroethylene, 1-chloropropane, 2-chloro-2-methylpropane, 1,1,1-trichloroethane and 1,1-dichloroethane. The fluorinated hydrocarbons include 1,1,2-trichlorotrifluoroethane (R113), 1,1,2-trichloro-2,2-difluoroethane (R122), 1,2,2-trichloro-1,2-difluoroethane (R122a), 1,1,1-trichloro-2,2-difluoroethane (R122b), 1,1-dichloro-2,2,2-trifluoroethane (R123), 1,2-dichloro-1,1-difluoroethane (R132b), 1,2-dichloro-1-fluoroethane (R141), 1,1-dichloro-1-fluoroethane (R141b) and trichlorofluoromethane (R11). Likewise, the brominated hydrocarbons include 2-bromopropane as a preferred example.

The hydrocarbons having a boiling point of from 20.degree. to 85.degree. C., include aliphatic, alicyclic and aromatic hydrocarbons. Preferably, they include hydrocarbons having from 5 to 8 carbon atoms such as n-pentane, isopentane, n-hexane, 2,4-dimethylpentane, cyclopentane, 2,2-dimethylbutane, 2-methylpentane, methylcyclopentane, cyclohexane and 2,3-dimethylbutane. The hydrocarbons having from 5 to 8 carbon atoms may be a mixture obtained as a petroleum fraction and may preferably be a petroleum fraction containing as the main component at least one member selected from the group consisting of cyclopentane, 2,2-dimethylbutane, 2-methylpentane and 2,3-dimethylbutane.

The azeotropic or azeotropic-like composition of the mixture of the present invention may vary to an extent of .+-.1.0% by weight depending upon the purities of the compounds to be mixed or by the influence of measuring error, etc.

To the mixture of the present invention, other components may further be incorporated, as the case requires. For example, when the mixture is used as a solvent, it may contain at least one member selected from the group consisting of hydrocarbons such as neopentane, 3-methylpentane, neohexane, hexane, 3-methylhexane, heptane, isoheptane, 2,3-dimethylpentane, 2,4-dimethylpentane, octane, 2,2,3-trimethylpentane, 2,2,4-trimethylpentane, cyclopentane, methylcyclohexane and ethylcyclohexane; chlorinated hydrocarbons such as 1,1,2-trichloroethane, 1,2-dichloroethane, trichloroethylene and tetrachloroethylene; chlorofluorinated hydrocarbons other than those of the present invention, such as 1,1-dichloro-2,3,3,3-tetrafluoropropene-1, trans-3-chloro-1,1,1,2,4,4,5,5,5-nonafluoropentene-2, cis-3-chloro-1,1,1,2,4,4,5,5,5-nonafluoropentene-2, 1,1,1,2,2,5,5,6,6,6-decafluorohexane and tetrachloro-1,2,-difluoroethane; nitro compounds; phenols; amines; ethers; amylenes; esters; organic phosphites; epoxides; furans; alcohols; ketones; amides; and triazoles.

The content of such additional components in the mixture of the present invention is not particularly limited, but for the purpose of improving or controlling the solibility or obtaining a suitable boiling point or non-flammability, the content is usually from 0 to 50% by weight, preferably from 1 to 40% by weight. Preferably such incorporation will bring about an azeotropic or azeotropic-like composition. Further, to give the mixture a high level of stabilizing effect, it is effective to incorporate a stabilizer. The content of such additional components is usually from 1 ppm to 10% by weight, preferably from 10 ppm to 5% by weight. Further, the mixture of the present invention may further contain various cleaning assistants, surfactants, emulsifying agents, water, etc.

As the nitro compounds, those represented by the formula R--NO.sub.2 wherein R is a chain or cyclic hydrocarbon group having from 1 to 6 carbon atoms and containing a saturated or unsaturated bond, may be employed. Specifically, they include nitromethane, nitroethane, 1-nitropropane, 2-nitropropane and nitrobenzene. More preferred are nitromethane and nitroethane.

As the phenols, those represented by the following formulas are preferred: ##STR1## wherein each of R, R', R" and R"' is OH or a chain or cyclic hydrocarbon group having from 1 to 6 carbon atoms and containing a saturated or unsaturated bond.

Specifically, they include phenol, o-cresol, m-cresol, p-cresol, thymol, p-tert-butylphenol, tert-butylcatechol, catechol, isoeugenol, o-methoxyphenol, 4,4'-dihydroxyphenyl-2,2-propane, isoamyl salicylate, benzyl salicylate, methyl salicylate and 2,6-di-t-butyl-p-cresol. More preferred are phenol, 4,4-dihydroxyphenyl-2,2-propane and 2,6-di-t-butyl-p-cresol.

As the amines, those represented by the following formulas are preferred:

R--N(R').sub.2, (R).sub.2 --N(R').sub.2, (R).sub.2 --NR', (R).sub.3 N, RN, ##STR2## (R).sub.2 N--R'--N--(R").sub.2 R--CHN(R').sub.2 --R"--N--(R"').sub.2 (R).sub.2 N--R'--NH--R"--N--(R"').sub.2 (R).sub.2 N--(R'NH).sub.4 --R", R--NH--R', and (R).sub.2 --N--OR' wherein each of R, R', R" and R"' is a hydrogen atom or chain or cyclic hydrocarbon group having from 1 to 8 carbon atoms and containing a Saturated or unsaturated bond.

Specifically, they include pentylamine, hexylamine, diisopropylamine, diisobutylamine, di-n-propylamine, diallylamine, triethylamine, n-methylaniline, pyridine, picoline, morpholine, N-methylmorpholine, triallylamine, allylamine, .alpha.-methylbenzylamine, methylamine, dimethylamine, trimethylamine, ethylamine, diethylamine, propylamine, isopropylamine, sec-butylamine, tert-butylamine, dibutylamine, tributylamine, dipentylamine, tripentylamine, 2-ethylhexylamine, aniline, N,N-dimethylaniline, N,N-diethylaniline, ethylenediamine, propylenediamine, diethylenetriamine, tetraethylenepentamine, benzylamine, dibenzylamine, diphenylamine and diethylhydroxylamine. More preferred are diisopropylamine and diallylamine.

As the ethers, those represented by the following formulas are preferred:

R--O--R', ##STR3## R--OH--R'OH, HO--R--O--R', HO--R--O--R'--O--R", HO--R--OH, ##STR4## R--O--R'--O--R", ##STR5## R--O--R'--(OR").sub.2 wherein each of R, R' and R" is a chain or cyclic hydrocarbon group having from 1 to 10 carbon atoms and containing a saturated or unsaturated bond. Specifically, they include 1,4-dioxane, 1,2-butanediol, isopropyl ether, ethylene glycol monomethyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, dipropylene glycol methyl ether, ethyl isobutyl ether, ethyl isopentyl ether, ethyl naphthyl ether, ethyl vinyl ether, ethyl phenyl ether, anisole, anethole, ethyl propargyl ether, ethyl propyl ether, ethyl methyl ether, ethylene glycol, methyl glycidyl ether, ethylene glycol diethyl ether, ethylene glycol diphenyl ether, ethylene glycol dimethyl ether, ethylene glycol monophenyl ether, ethylene glycol monobutyl ether, ethylene glycol monobenzyl ether, dipentyl ether, allyl ethyl ether, diisopentyl ether, diallyl ether, butyl glycidyl ether, allyl glycidyl ether, dipropyl ether, ethyl glycidyl ether, vinyl glycidyl ether, dimethyl ether, diethyl ether, di-n-propyl ether, dibutyl ether, 1,2-dimethoxyethane, trimethoxyethane, and triethoxyethane. More preferred are 1,4-dioxane, butyl glycidyl ether and 1,2-dimethoxyethane.

As the amylenes, .alpha.-amylene, .beta.-amylene, .gamma.-amylene, .alpha.-isoamylene and .beta.-isoamylene are preferred. More preferred is .beta.-amylene.

As the esters, those represented by the following formulas are preferred: ##STR6##

(R').sub.2 --N--COO--R', and RO--R'--COOR" wherein each of R, R' and R" is a hydrogen atom or a chain or cyclic hydrocarbon group having from 1 to 6 carbon atoms and containing a saturated or unsaturated bond.

Specifically, they include methyl acetate, ethyl acetate, propyl acetate, n-butyl acetate, isobutyl acetate, isopropyl acetate, ethyl acrylate, 2-hydroxyethyl methacrylate, methyl acrylate, butyl acrylate, phenyl acrylate, allyl acrylate, caprolactam, ethyl carbamate, methyl carbamate, and methyl salicylate. More preferred are methyl acetate and methyl salicylate.

As the organic phosphites, those represented by the following formula are preferred: ##STR7## wherein each of R, R', R" and R"' is a hydrogen atom or saturated or unsaturated chain or cyclic hydrocarbon group having from 1 to 18 carbon atoms. Specifically, they include triphenolphosphite, tris(nonylphenyl)phosphite, triethylphosphite, tris(2-ethylhexyl)phosphite, tridecylphosphite, tributylphosphite, diphenylmono(2-ethylhexyl)phosphite, diphenylmonodecylphosphite, diphenylmonotridecylphosphite, dilaurylhydrogen phosphite, diphenylhydrogen phosphite, tetraphenyldipropylene glycol pentaerythritol tetraphosphite, trilauryltrithiophosphite, bis(tridecyl)pentaerythritol diphosphite, bis(nonylphenyl)pentaerythritol diphosphite, tristearyl phosphite, distearyl pentaerythritol diphosphite, and tris(2,4-di-tert-butylphenyl)phosphite. More preferred are triphenylphosphite and tributylphosphite.

As the epoxides, those represented by the following formulas are preferred:

RO and XRO wherein R is a saturated or unsaturated chain or cyclic hydrocarbon group having from 1 to 8 carbon atoms, and X is a halogen atom.

Specifically, they include 1,2-butylene oxide, epichlorohydrin, propylene oxide, 2,3-butylene oxide and styrene oxide. More preferred are 1,2-butylene oxide and epichlorohydrin.

As the furans, those represented by the following formulas are preferred: ##STR8## wherein each of R, R' and R" is a saturated or unsaturated hydrocarbon group having from 1 to 2 carbon atoms. Specifically they include tetrahydrofuran, n-methylpyrrole, 2-methylpyrrole and 3-methylpyrrole. More preferred is N-methylpyrrole.

As the alcohols which are mainly used as stabilizers, those presented by the following formulas are preferred:

R--OH, NH.sub.2 --R--OH, R--O--R'--OH and R--R'--OH wherein each of R and R' is a saturated or unsaturated chain or cyclic hydrocarbon group having from 1 to 6 carbon atoms.

Specifically, they include, methanol, ethanol, sec-butanol, tert-butanol, allylalcohol, benzylalcohol, propanol, isopropanol, tert-amylalcohol, 1-amino-2-propanol, propargylalcohol, isobutanol, butanol, 3-methyl-pentyn-3-ol, 1-methoxy-2-propanol, 3-methyl-1-butyn-3-ol, 2-methyl-3-butyn-3-ol, pentyl alcohol, hexanol, heptanol and octanol. More preferred are sec-butanol and propargyl alcohol.

As the ketones and amides, those represented by the following formulas are preferred:

(R).sub.2 CO, R--CO--R', (RNCO).sub.2, ##STR9## R--CO--NH--R', R--CON--(R').sub.2, (R).sub.2 NCON(R').sub.2, ##STR10## wherein each of R, R', R" and R"' is a hydrogen atom or a saturated or unsaturated hydrocarbon group having from 1 to 4 carbon atoms. Specifically, they include acetone, methyl ethyl ketone, methyl isobutyl ketone, azodicarbonamide, maleic acid hydrazine, phthalic acid hydrazine, formamide, N-methylformamide, N,N-dimethylformamide, N-methylpropropioneamide, 2-pyrrolidone, N,N,N',N'-tetramethylurea and N-methylpyrrolidone. More preferred are methyl isobutyl ketone and 2-pyrrolidone.

As the triazoles, those presented by the following formulas are preferred: ##STR11## wherein each of R, R', R" and R"' is a hydrogen atom or saturated or unsaturated chain or cyclic hydrocarbon group having from 1 to 16 carbon atoms, and X is a halogen atom.

Specifically, they include 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 1,2,3-benzotriazole, and 1-[(N,N-bis-2-ethylhexyl)aminomethyl]benzotriazole. More preferred is 1,2,3-benzotriazole.

The hydrochlorofluorocarbon azeotropic or azeotropic-like mixture of the present invention is useful for various purposes, for example, as a blowing agent and so on, like conventional CFCs. It is particularly useful as a solvent, since it provides a solvency equivalent or superior to conventional R113. Specific applications as the solvent include a removing agent for flux, grease, oil, wax or ink, a coating solvent, an extracting agent, a cleaning or water-removing agent for various articles made of glass, ceramics, plastic, rubber or metal,. particularly for semiconductor devices, electronic components, electronic circuit boards, electrical devices, precision machine parts or optical lenses. Further, it is useful as a resist developer, a resist-removing agent or a buff polishing and cleaning agent. As a cleaning method, manual wiping, dipping, spraying, shaking, ultrasonic cleaning or vapor cleaning may be employed.

Now, the present invention will be described in further detail with reference to Examples. However, it should be understood that the present invention is by no means restricted by such specific Examples.

EXAMPLES 1 TO 152

1,000 g of a mixture as identified in Table 1 was charged in a distillation flask, and using a packed distillation column which contained approximately 20 theoretical plates, distillation was conducted under atmospheric pressure. The fractions thereby obtained were measured by gas chromatography, whereby the presence of an azeotropic composition was found.

On the other hand, the azeotropic-like composition was obtained from the composition after repeating the evaporation and condensation of a mixture as identified in Table 1 for 3 days by an open system cleaning sump.

TEST FOR CLEANING MACHINE OIL

A SUS-304 test piece (25 mm.times.30 mm.times.2 mm in thickness) was immersed in machine oil (CQ-30, manufactured by Nippon Sekiyu K.K.) and then immersed in the azeotropic mixture of the present invention for 5 minutes. The results are shown in Table 1, wherein symbol A-.circleincircle. indicates that the machine oil can be removed satisfactorily at the same level as R113.

TEST FOR CLEANING FLUX

A single sided printed circuit board (50 mm.times.100 mm.times.1.6 mm in thickness) was coated with a flux (Tamura F-AL-4, manufactured by Tamura Seisakusho) and heated at 200.degree. C. for 2 minutes in a convection oven. Then, it was immersed in the azeotropic mixture of the present invention for one minute. The results are shown in Table 1, in which symbol B-.circleincircle. indicates that the flux can be removed satisfactorily at the same level as R113/ethanol=96.2 wt %/3.8 wt %.

TEST FOR REMOVING WATER

A glass plate (30 mm.times.18 mm.times.5 mm in thickness) was immersed in deionized water and then immersed in the azeotropic mixture of the present invention for 20 seconds for removal of water. The glass plate withdrawn, was immersed in dry methanol, whereby the removal of water was determined from the increase of the water content in methanol. The results are shown in Table 1, in which symbol C-.circleincircle. indicates that the water can be removed satisfactorily at the same level as R113/methanol=93.6 wt %/6.4 wt %.

TABLE 1__________________________________________________________________________ Charged Boiling point Azeotropic Azeotropic like B.P. composition of Azeotrope composition composition TestExamples Mixtures (.degree.C.) (wt %) (.degree.C.) (wt %) (wt %) results__________________________________________________________________________1 R225 ca 51.1 30 31 25 5-45 A-.circleincircle. R141b 32 70 75 55-952 R225ca 51.1 40 44 42 22-62 A-.circleincircle. R113 47.6 60 58 38-783 R225ca 51.1 80 52 78 58-98 A-.circleincircle. R122 71.9 20 22 2-424 R225ca 51.1 52 42 50 30-70 A-.circleincircle. R132b 46.8 48 50 30-705 R225ca 51.1 50 34 47 27-67 B-.circleincircle. Dichloromethane 39.8 50 53 33-736 R225cb 56.1 20 32 16 1-36 A-.circleincircle. R141b 32 80 84 64-997 R225cb 56.1 50 36 43 33-53 B-.circleincircle. Dichloromethane 39.8 50 57 47-678 R225cb 56.1 42 43 39 19-59 A-.circleincircle. R132b 46.8 58 61 41-819 R225cb 56.1 80 55 78 58-98 A-.circleincircle. R122 71.9 20 22 2-4210 R225cb 56.1 30 46 32 12-52 A-.circleincircle. R113 47.6 70 68 48-8811 R244ca 54 15 32 13 1-33 A-.circleincircle. R141b 32 85 87 67-9912 R244ca 54 50 35 38 18-58 A-.circleincircle. Dichloromethane 39.8 50 62 42-82 B-.circleincircle.13 R244ca 54 80 55 83 63-99 A-.circleincircle. R122 71.9 20 17 1-3714 R244ca 54 42 44 38 18-58 A-.circleincircle. R132b 46.8 58 62 42-8215 R244ca 54 20 47 26 6-46 A-.circleincircle. R113 47.6 80 74 54-9416 R225ca 51.1 70 45 66 46-98 A-.circleincircle. Cyclopentane 49.3 30 34 2-5417 R225cb 56.1 58 47 55 35-98 A-.circleincircle. Cyclopentane 49.3 42 45 2-6518 R244ca 54 50 50 48 28-98 A-.circleincircle. 2,2-dimethylbutane 49.7 50 52 2-7219 R225cb 56.1 25 50 21 11-98 A-.circleincircle. 2,2-dimethylbutane 49.7 75 79 2-8920 R244ca 54 55 47 50 30-98 A-.circleincircle. Cyclopentane 49.3 45 50 2-7021 R225cb 51.1 60 49 56 36-98 A-.circleincircle. 2,2-dimethylbutane 49.7 40 44 2-6422 R225ca 51.1 60 47 66 46-86 A-.circleincircle. 2-bromopropane 59.4 40 34 14-5423 R225cb 56.1 60 49 58 38-78 A-.circleincircle. 2-bromopropane 59.4 40 42 22-6224 R244ca 54 50 48 55 35-75 A-.circleincircle. 2-bromopropane 59.4 50 45 25-6525 R244cb 58 60 50 50 30-70 A-.circleincircle. 2-bromopropane 59.4 40 50 30-7026 R235ca 43.9 70 42 74 54-94 A-.circleincircle. 2-bromopropane 59.4 30 26 6-4627 R243cc 60.2 40 52 50 30-70 A-.circleincircle. 2-bromopropane 59.4 60 50 30-7028 R225cb 56.1 90 -- -- 50-99 A-.circleincircle. 2-methylpentane 60.3 10 -- 1-5029 R244ca 54 90 55 91 71-99 A-.circleincircle. 2-methylpentane 60.3 10 9 1-2930 R244cb 58 70 55 72 52-98 A-.circleincircle. 2-methylpentane 60.3 30 28 2-4831 R243cc 60.2 70 61 74 54-99 A-.circleincircle. 2-methylpentane 60.3 30 26 1-4632 R225cb 56.1 80 56 78 58-98 A-.circleincircle. 2,3-dimethylbutane 58.0 20 22 2-4233 R244ca 54 80 53 76 56-96 A-.circleincircle. 2,3-dimethylbutane 58.0 20 24 4-4434 R244cb 58 60 55 63 43-95 A-.circleincircle. 2,3-dimethylbutane 58.0 40 37 5-5735 R225ca 51.1 90 -- -- 85-99 A-.circleincircle. 2,3-dimethylbutane 58.0 10 -- 1-1536 R243cc 60.2 90 -- -- 50-95 A-.circleincircle. 2,3-dimethylbutane 58.0 10 -- 5-5037 R225ca 51.1 60 44 57 37-77 A-.circleincircle. trans-1,2- 47.7 40 43 23-63 dichloroethylene38 R225cb 56.1 50 46 47 27-67 A-.circleincircle. trans-1,2- 47.7 50 53 33-73 dichloroethylene39 R244ca 54 50 45 46 27-66 A-.circleincircle. trans-1,2- 47.7 50 54 34-74 dichloroethylene40 R244cb 58 45 46 40 20-60 A-.circleincircle. trans-1,2- 47.7 55 60 40-80 dichloroethylene41 R235ca 43.9 70 41 66 46-86 A-.circleincircle. trans-1,2- 47.7 30 34 14-54 dichloroethylene42 R243cc 60.2 40 45 42 22-62 A-.circleincircle. trans-1,2- 47.7 60 58 38-78 dichloroethylene43 R225ca 51.1 80 50 78 58-98 A-.circleincircle. cis-1,2- 60.6 20 22 2-42 dichloroethylene44 R225cb 56.1 70 53 69 59-79 A-.circleincircle. cis-1,2- 60.6 30 31 21-41 dichloroethylene45 R244ca 54 70 51 67 47-87 A-.circleincircle. cis-1,2- 60.6 30 33 13-53 dichloroethylene46 R244cb 58 60 54 59 39-79 A-.circleincircle. cis-1,2- 60.6 40 41 21-61 dichloroethylene47 R235ca 43.9 90 45 94 74-99 A-.circleincircle. cis-1,2- 60.6 10 6 1-26 dichloroethylene48 R243cc 60.2 60 52 58 38-78 A-.circleincircle. cis-1,2- 60.6 40 42 22-62 dichloroethylene49 R244cb 58 10 48 12 2-32 A-.circleincircle. R113 47.6 90 88 68-9850 R235ca 43.9 60 42 56 36-76 A-.circleincircle. R113 47.6 40 44 24-6451 R244cb 58 30 36 33 13-53 A-.circleincircle. Dichloromethane 39.8 70 67 47-8752 R235ca 43.9 50 32 53 33-73 A-.circleincircle. Dichloromethane 39.8 50 47 27-6753 R243cc 60.2 50 38 30 10-50 A-.circleincircle. Dichloromethane 39.8 50 70 50-9054 R244cb 58 40 48 43 23-99 A-.circleincircle. Cyclopentane 49.3 60 57 1-7755 R235ca 43.9 80 42 77 67-99 A-.circleincircle. Cyclopentane 49.3 20 23 1-3356 R243cc 60.2 25 49 30 10-99 A-.circleincircle. Cyclopentane 49.3 75 70 1-9057 R244cb 58 40 50 34 14-99 A-.circleincircle. 2,2-dimethylbutane 49.7 60 66 1-8658 R235ca 43.9 80 43 81 61-99 A-.circleincircle. 2,2-dimethylbutane 49.7 20 19 1-3959 R244cb 58 80 58 75 55-95 A-.circleincircle. R122 71.9 20 25 5-4560 R244cb 58 30 45 29 9-49 A-.circleincircle. R132b 46.8 70 71 51-9161 R235ca 43.9 20 28 14 1-34 A-.circleincircle. R123 27.1 80 86 66-9962 R235ca 43.9 20 39 57 37-77 A-.circleincircle. R132b 46.8 80 43 23-6363 R235ca 43.9 30 30 34 14-54 A-.circleincircle. R141b 32 70 66 46-8664 R243cc 60.2 80 60 77 57-97 A-.circleincircle. R122 71.9 20 23 3-4365 R243cc 60.2 20 46 24 4-44 A-.circleincircle. R132b 46.8 80 76 56-9666 R225ca 51.1 90 52 95 75-99 A-.circleincircle. R141 75.7 10 5 1-2567 R225cb 56.1 90 56 89 69-99 A-.circleincircle. R141 75.7 10 11 1-3168 R244cb 58 85 59 90 70-99 A-.circleincircle. R141 75.7 15 10 1-3069 R225ca 51.1 97 46 94.6 75-99 A-.circleincircle. Methanol 64.5 3 5.4 1-25 B-.circleincircle. C-.circleincircle.70 R225cb 56.1 97 53.8 95.6 74-99.5 A-.circleincircle. Ethanol 78.3 3 4.4 0.5-26 B-.circleincircle. C-.circleincircle.71 R225cb 56.1 97 54.9 97.9 77-99 A-.circleincircle. Isopropanol 82.4 3 2.1 1-23 B-.circleincircle. C-.circleincircle.72 R225cb 56.1 95 47.2 93.3 74-99 A-.circleincircle. Methanol 64.5 5 6.7 1-26 B-.circleincircle. C-.circleincircle.73 R225ca 51.1 90 50 94.8 14-98 A-.circleincircle. R225cb 56.1 5 2.7 1-85 B-.circleincircle. Ethanol 78.3 5 2.5 1-16 C-.circleincircle.74 R225ca 51.1 89 46 89.8 14-98 A-.circleincircle. R225cb 56.1 6 5.6 1-85 B-.circleincircle. Methanol 64.7 5 4.6 1-16 C-.circleincircle.75 R225ca 51.1 98.5 50 97.3 75-99.5 A-.circleincircle. Ethanol 78.3 1.5 2.7 0.5-25 B-.circleincircle. C-.circleincircle.76 R225ca 51.1 -- -- -- 76-99 A-.circleincircle. Iso-propanol 82.4 1-24 B-.circleincircle. C-.circleincircle.77 R225ca 51.1 35 -- 38 15-61 A-.circleincircle. R113 47.6 15 15 8-44 B-.circleincircle. Dichloromethane 39.8 50 47 34-7078 R225cb 56.1 25 -- 26 6-27 A-.circleincircle. R113 47.6 35 35 22-52 R132b 46.8 40 39 27-5179 R225ca 51.1 35 -- 32 22-55 A-.circleincircle. R113 47.6 25 29 10-46 R132b 46.8 40 39 21-5580 R225cb 56.1 25 -- 26 8-38 A-.circleincircle. R113 47.6 25 24 8-47 B-.circleincircle. Dichloromethane 39.8 50 50 34-6381 R244ca 54 25 -- 25 6-33 A-.circleincircle. R113 47.6 20 19 9-41 B-.circleincircle. Dichloromethane 39.8 55 56 43-6882 R244ca 54 20 -- 19 4-39 A-.circleincircle. R113 47.6 30 32 6-53 R132b 46.8 50 49 30-6783 R225ca 51.1 40 -- 41 28-52 A-.circleincircle. R113 47.6 20 22 7-39 B-.circleincircle. trans-1,2- 47.7 40 37 25-48 dichloroethylene84 R244ca 54 30 -- 25 8-36 A-.circleincircle. R113 47.6 60 62 48-85 B-.circleincircle. 2-bromopropane 59.4 10 13 3-2885 R225ca 51.1 40 -- 42 29-60 A-.circleincircle. R113 47.6 50 47 11-61 B-.circleincircle. 2-bromopropane 59.4 10 11 3-2986 R244ca 54 20 -- 22 4-38 A-.circleincircle. R113 47.6 60 58 40-77 B-.circleincircle. cis-1,2- 60.6 20 20 9-32 dichloroethylene87 R225ca 56.1 35 -- 32 19-43 A-.circleincircle. R113 47.6 50 53 39-60 B-.circleincircle. cis-1,2- 60.6 15 15 8-22 dichloroethylene88 R225ca 51.1 40 -- 42 25-54 A-.circleincircle. R113 47.6 45 45 38-58 B-.circleincircle. cis-1,2- 60.6 15 13 8-22 dichloroethylene89 R244ca 54 35 -- 34 5-45 A-.circleincircle. R113 47.6 22 20 4-60 B-.circleincircle. trans-1,2- 47.7 48 46 26-59 dichloroethylene90 R225cb 56.1 35 -- 36 27-51 A-.circleincircle. R113 47.6 25 27 6-44 B-.circleincircle. trans-1,2- 47.7 40 37 29-48 dichloroethylene91 R225cb 56.1 35 -- 34 22-43 A-.circleincircle. R113 47.6 55 56 38-68 B-.circleincircle. 2-bromopropane 59.4 10 10 3-2692 R225cb 56.1 35 -- 34 20-53 A-.circleincircle. R113 47.6 55 55 8-72 Cyclopentane 49.3 10 11 1-4093 R225ca 51.1 40 -- 41 28-65 A-.circleincircle. R113 47.6 50 52 13-68 Cyclopentane 49.3 10 7 2-3594 R225ca 54 25 -- 23 17-46 A-.circleincircle. R113 47.6 70 71 8-77 2,2-dimethylbutane 49.7 5 6 2-5695 R225ca 51.1 50 -- 52 42-61 A-.circleincircle. R113 47.6 20 16 7-55 B-.circleincircle. 1-chloropropane 46.6 30 32 2-4396 R225cb 56.1 40 -- 42 23-44 A-.circleincircle. R113 47.6 30 27 8-70 B-.circleincircle. 1-chloropropane 46.6 30 31 2-4797 R244ca 54 20 -- 22 4-33 A-.circleincircle. R113 47.6 60 57 41.78 B-.circleincircle. 2-chloro-2-methyl- 50.7 20 21 8-31 propane98 R244ca 54 30 -- 27 5-45 A-.circleincircle. R113 47.6 50 50 9-74 Cyclopentane 49.3 20 23 12-4699 R225ca 51.1 45 -- 40 28-56 A-.circleincircle. R113 47.6 50 55 12-64 B-.circleincircle. 2-chloro-2-methyl- 50.7 5 5 2-32 propane100 R225cb 56.1 30 -- 31 17-38 A-.circleincircle. R113 47.6 60 58 41-75 B-.circleincircle. 2-chloro-2-methyl- 50.7 10 11 2-21 propane101 R244ca 54 35 -- 36 9-39 A-.circleincircle. R113 47.6 20 19 9-84 B-.circleincircle. 1-chloropropane 46.6 45 45 2-60102 R225ca 51.1 90 -- 90 36-97 A-.circleincircle. R225cb 56.1 5 7 1-51 2-methylpentane 60.3 5 3 1-16103 R225ca 51.1 85 -- 88 6-94 A-.circleincircle. R225cb 56.1 10 8 1-83 2,3-dimethylbutane 58.0 5 4 1-26104 R225ca 51.1 50 -- 50 6-67 A-.circleincircle. R225cb 56.1 10 12 4-67 B-.circleincircle. 2-chloro-2-methyl- 50.7 40 38 1-58 propane105 R225ca 51.1 40 -- 41 7-56 A-.circleincircle. R225cb 56.1 15 14 7-61 B-.circleincircle. 1-chloropropane 46.6 45 45 1-54106 R225ca 51.1 55 -- 54 6-66 A-.circleincircle. R225cb 56.1 10 10 5-64 B-.circleincircle. 2-bromopropane 59.4 35 36 10-48107 R225ca 51.1 60 -- 58 6-70 A-.circleincircle. R225cb 56.1 10 12 4-74 B-.circleincircle. cis-1,2-dichloro- 60.6 30 30 10-38 ethylene108 R225ca 51.1 40 -- 42 8-57 A-.circleincircle. R225cb 56.1 15 13 6-54 B-.circleincircle. trans-1,2-dichloro- 47.7 45 45 10-59 ethylene109 R225ca 51.1 80 -- 80 40-89 A-.circleincircle. R225cb 56.1 10 8 2-37 B-.circleincircle. R122 71.9 10 12 3-23110 R225ca 51.1 80 -- 84 44-92 A-.circleincircle. R225cb 56.1 10 8 2-41 B-.circleincircle. R141 75.7 10 8 1-17111 R225ca 51.1 35 -- 36 6-44 A-.circleincircle. R225cb 56.1 10 11 4-44 B-.circleincircle. R132b 46.8 55 53 44-73112 R225ca 56.1 25 -- 20 8-31 A-.circleincircle. R141b 32 65 67 36-88 B-.circleincircle. Dichloromethane 39.8 10 13 3-38113 R225ca 51.1 30 -- 26 8-41 A-.circleincircle. R141b 32 60 62 32-84 B-.circleincircle. Dichloromethane 39.8 10 12 3-31114 R225ca 51.1 15 -- 12 6-33 A-.circleincircle. R141b 32 5 7 2-33 B-.circleincircle. R123 27.1 80 81 44-86115 R225ca 51.1 30 -- 33 5-47 A-.circleincircle. R225cb 56.1 10 9 3-42 R113 47.6 60 58 5-79116 R225ca 51.1 25 -- 25 9-49 A-.circleincircle. R225cb 56.1 21 21 8-39 B-.circleincircle. Dichloromethane 39.8 55 54 5-70117 R244ca 54 15 -- 16 6-31 A-.circleincircle. R141b 32 70 68 38-90 B-.circleincircle. Dichloromethane 39.8 15 16 3-40118 244ca 54 20 -- 21 5-58 A-.circleincircle. R225cb 56.1 40 42 7-66 B-.circleincircle. 2-bromopropane 59.4 40 37 5-54119 R244ca 54 30 -- 31 4-58 A-.circleincircle. R225cb 56.1 40 35 7-71 B-.circleincircle. cis-1,2-dichloro- 60.6 30 34 4-43 ethylene120 R244ca 54 15 -- 15 8-58 A-.circleincircle. R225cb 56.1 40 39 9-65 B-.circleincircle. 1-chloropropane 46.6 45 46 5-71121 R244ca 54 20 -- 22 7-55 A-.circleincircle. R225cb 56.1 30 32 8-56 B-.circleincircle. 2-chloro-2-methyl- 50.7 50 46 5-74 propane122 R244ca 54 60 -- 62 29-87 A-.circleincircle. R225cb 56.1 20 20 6-68 2,3-dimethylbutane 58 20 18 2-29123 R244ca 54 20 -- 18 5-42 A-.circleincircle. R225cb 56.1 20 24 7-50 B-.circleincircle. R132b 46.8 60 58 41-80124 R244ca 54 30 -- 30 5-55 A-.circleincircle. R225cb 56.1 25 26 8-57 B-.circleincircle. trans-1,2-dichloro- 47.7 45 44 5-61 ethylene125 R244ca 54 25 -- 25 8-56 A-.circleincircle. R225cb 56.1 30 32 9-55 Cyclopentane 49.3 45 45 5-69126 R244ca 54 20 -- 17 7-35 A-.circleincircle. R225cb 56.1 20 24 9-42 B-.circleincircle. Dichloromethane 39.8 60 59 45-73127 R244ca 54 40 -- 39 7-61 A-.circleincircle. R225ca 51.1 20 19 8-71 2,2-dimethylbutane 49.7 40 42 5-72128 R244ca 54 10 -- 12 5-41 A-.circleincircle. R225ca 51.1 30 34 9-48 B-.circleincircle. Dichloromethane 39.8 60 54 40-73129 R244ca 54 10 -- 9 2-37 A-.circleincircle. R225ca 51.1 40 40 7-50 B-.circleincircle. R132b 46.8 50 51 35-72130 R244ca 54 25 -- 24 3-49 A-.circleincircle. R225ca 51.1 70 70 47-95 B-.circleincircle. R141 75.7 5 6 0.1-17131 R244ca 54 10 -- 11 5-55 A-.circleincircle. R225ca 51.1 55 55 9-67 Cyclopentane 49.3 35 34 3-53132 R244ca 54 20 -- 21 3-59 A-.circleincircle. R225ca 51.1 70 70 36-93 B-.circleincircle. R122 71.9 10 9 1-22133 R244ca 54 10 -- 11 3-69 A-.circleincircle. R225ca 51.1 50 47 8-78 B-.circleincircle. trans-1,2-dichloro- 47.7 40 42 3-54 ethylene134 R244ca 54 8 -- 10 3-59 A-.circleincircle. R225ca 51.1 62 60 7-75 B-.circleincircle. cis-1,2-dichloro- 60.6 30 30 3-38 ethylene135 R244ca 54 10 -- 8 3-58 A-.circleincircle. R225ca 51.1 60 58 6-71 B-.circleincircle. 2-bromopropane 59.4 30 34 3-44136 R244ca 54 45 -- 47 22-86 A-.circleincircle. R225cb 56.1 45 47 6-72 A-.circleincircle. R141 75.7 10 6 1-21137 R225ca 51.1 50 -- 48 10-88 A-.circleincircle. R225cb 56.1 10 15 8-70 Cyclopentane 49.3 40 37 3-58138 R244ca 54 50 -- 45 8-83 A-.circleincircle. R225cb 56.1 40 45 6-84 B-.circleincircle. R122 71.9 10 10 3-28139 R244ca 54 30 -- 29 3-84 A-.circleincircle. R225ca 51.1 65 67 13-94 2,3-dimethylbutane 58 5 4 0.1-19140 R244ca 54 10 -- 11 3-48 A-.circleincircle. R225ca 51.1 50 48 7-62 B-.circleincircle. 1-chloropropane 46.6 40 41 3-56141 R244ca 54 10 -- 10 3-56 A-.circleincircle. R225ca 51.1 60 54 6-72 B-.circleincircle. 2-chloro-2-methyl- 50.7 30 36 3-54 propane142 R244ca 54 45 -- 42 7-76 A-.circleincircle. R225cb 56.1 10 14 8-62 2,2-dimethylbutane 49.7 45 44 3-73143 R244ca 54 -- -- -- 76-99 A-.circleincircle. Methanol 64.7 1-24 B-.circleincircle.144 R244ca 54 -- -- -- 77-99 A-.circleincircle. Ethanol 78.3 1-23 B-.circleincircle.145 R244ca 54 -- -- -- 79-99 A-.circleincircle. Isopropanol 82.4 1-21 B-.circleincircle.146 R225ca 51.1 -- -- -- 50-80 R244ca 54 10-40 A-.circleincircle. Ethanol 78.3 1-10 B-.circleincircle.147 R225cb 56.1 -- -- -- 40-80 R224ca 54 10-50 A-.circleincircle. Ethanol 78.3 1-10 B-.circleincircle.148 R225ca 51.1 -- -- -- 5-99 R225cb 56.1 3-99 A-.circleincircle. R244ca 54 1-69 B-.circleincircle. Ethanol 78.3 1-35149 R225ca 51.1 -- -- -- 50-80 A-.circleincircle. R244ca 54 10-40 B-.circleincircle. Methanol 64.7 1-10150 R225cb 56.1 -- -- -- 40-80 A-.circleincircle. R244ca 54 10-50 B-.circleincircle. Methanol 64.7 1-10151 R225ca 51.1 -- -- -- 5-99 A-.circleincircle. R225cb 56.1 3-99 B-.circleincircle. R244ca 54 1-69 Methanol 64.7 1-35152 R225ca 51.1 -- -- -- 1-98 A-.circleincircle. R225cb 56.1 1-98 B-.circleincircle. Isopropanol 82.4 1-16__________________________________________________________________________

REFERENCE EXAMPLES

For the purpose of ascertaining the effects of the azeotropic-like mixture of the present invention for stabilization, the following test was applied to the mixture as identified in Table 2.

In accordance with JIS K1600, a metal test piece was placed in both the liquid phase portion and the gas phase portion of the stabilized mixture as identified in Table 2, and after 48 hours, the state of corrosion of the test piece was inspected. The results are shown in Table 2.

Azeotropic-like Mixture

AA: R225ca/R225cb/methanol=47 wt %/47 wt %/6 wt %

______________________________________StabilizerNM: Nitromethane PH: PhenolDIPA: Diisopropylamine DO: 1,4-DioxaneAm: .beta.-Amylene MeA: Methyl acetateTPH: Triphenylphosphite BO: 1,2-ButhyleneoxideDME: 1,2-Dimethoxyethane MP: N-methylpyrroles-Bu: sec-Butanol MIBK: Methyl isobutyl ketoneECH: Epichlorohydrin i-Bu: IsobutanolBHT: 2,6-Di-t-butyl-o-cresolBTA: 1,2,3-BenzotriazoleAppearance of test piece.circleincircle.: No corrosion .largecircle.: No substantial corrosion.DELTA.: Corrosion slightly observedX: Substantial corrosion observed.______________________________________ TABLE 2______________________________________Reference Corrosion of test pieceExamples Stabilized mixture (wt %) Fe Cu Ag______________________________________AA01 AA(99.5)/PH(0.5) .circleincircle. .largecircle. .largecircle.AA02 AA(99.5)/DIPA(0.5) .circleincircle. .largecircle. .largecircle.AA03 AA(99.5)/Am(0.5) .circleincircle. .largecircle. .largecircle.AA04 AA(99.5)/TPH(0.5) .circleincircle. .largecircle. .largecircle.AA05 AA(99.5)/MP(0.5) .circleincircle. .largecircle. .largecircle.AA06 AA(99.5)/BTA(0.5) .largecircle. .circleincircle. .largecircle.AA07 AA(99)/NM(1) .circleincircle. .largecircle. .largecircle.AA08 AA(99)/DO(1) .circleincircle. .largecircle. .largecircle.AA09 AA(99)/MeA(1) .circleincircle. .largecircle. .largecircle.AA10 AA(99)/BO(1) .circleincircle. .largecircle. .largecircle.AA11 AA(99)/DME(1) .circleincircle. .largecircle. .largecircle.AA12 AA(99)/s-Bu(1) .circleincircle. .largecircle. .largecircle.AA13 AA(99)/MIBK(1) .circleincircle. .largecircle. .largecircle.AA14 AA(99)/ECH(1) .circleincircle. .largecircle. .largecircle.AA15 AA(98.5)/NM(1)/BTA(0.5) .circleincircle. .circleincircle. .circleincircle.AA16 AA(97.5)/NM(1)/BO(1)/ .circleincircle. .circleincircle. .largecircle. BHT(0.5)AA17 AA(97)/NM(1)/BO(1)/ .circleincircle. .circleincircle. .circleincircle. BHT(0.5/BTA(0.5)AA18 AA(96)/NM(1)/BTA(0.5) .circleincircle. .circleincircle. .circleincircle. BO(1)/i-Bu(1)/BHT(0.5)Compara- AA(100) .circleincircle. .DELTA. .DELTA.tiveExample______________________________________

INDUSTRIAL APPLICABILITY

The hydrochlorofluorocarbon azeotropic or azeotropic-like mixture of the present invention is non-flammable or hardly flammable and has excellent properties equal or superior to conventional CFCs. Further, the mixture shows no substantial change in the composition during boiling and evaporating, since it has an azeotropic composition or an azeotropic-like composition, and it can be used in the same manner as a conventional single CFC and thus has a merit that it requires no substantial change of the conventional technique. Further, it is excellent in the properties for dissolving and removing a flux or oil like R113 which is commonly used as a solvent, and thus it is useful as a cleaning agent which may be an alternative for R113.

Claims

1. A hydrochlorofluorocarbon azeotropic like mixture consisting essentially of

from 75 to 99 weight percent 1,1-dichloro-2,2,3,3,3-pentafluoropropane and from 1 to 25 weight percent methanol which boils at about 46.degree. C. at atmospheric pressure; or

from 75 to 99.5 weight percent 1,1-dichloro-2,2,3,3,3-pentafluoropropane and from 0.5 to 25 weight percent ethanol which boils at about 50.degree. C. at atmospheric pressure; or

from 74 to 99 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from 1 to 26 weight percent methanol which boils at about 47.2.degree. C. at atmospheric pressure; or

from 74 to 99.5 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from 0.5 to 26 weight percent ethanol which boils at about 53.8.degree. C. at atmospheric pressure; or

from 77 to 99 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from 1 to 23 weight percent isopropanol which boils at about 54.9.degree. C. at atmospheric pressure;

wherein the components of each azeotropic like composition consists of either 1,1-dichloro-2,2,3,3,3-pentafluoropropane or 1,3-dichloro-1,1,2,2,3-pentafluoropropane and either methanol, ethanol or isopropanol.

2. A hydrochlorofluorocarbon azeotropic mixture consisting essentially of 94.6 weight percent 1,1-dichloro-2,2,3,3,3-pentafluoropropane and 5.4 weight percent methanol which boils at 46.degree. C. at atmospheric pressure; or 97.3 weight percent 1,1-dichloro-2,2,3,3,3-pentafluoropropane and 2.7 weight percent ethanol which boils at 50.degree. C. at atmospheric pressure; or 93.3 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and 6.7 weight percent methanol which boils at 47.2.degree. C. at atmospheric pressure; or 95.6 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and 4.4 weight percent ethanol which boils at 53.8.degree. C. at atmospheric pressure; or 97.9 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and 2.1 weight percent isopropanol which boils at 54.9.degree. C. at atmospheric pressure; wherein the components of each azeotropic composition consists of either 1,1-dichloro-2,2,3,3,3-pentafluoropropane or 1,3-dichloro-1,1,2,2,3-pentafluoropropane and either methanol, ethanol or isopropanol.

3. An azeotropic composition consisting essentially of CF.sub.3 CF.sub.2 CHCl.sub.2 (225ca), CClF.sub.2 CF.sub.2 CHClF (225cb) and methanol, in amounts, by weight of 89.8 percent, 5.6 percent and 4.6 percent, respectively which boils at about 46.degree. C. at atmospheric pressure.

4. An azeotropic composition consisting essentially of CF.sub.2 CF.sub.2 CHCl.sub.2 (225ca), CClF.sub.2 CF.sub.2 CHClF (225cb) and ethanol, in amounts, by weight of 94.8 percent, 2.7 percent and 2.5 percent, respectively which boils at about 50.degree. C. at atmospheric pressure.