Azeotrope-like compositions of dichloropentafluoropropane and 1,2-dichloroethylene

Azeotrope-like compositions consisting essentially of from about 77 to about 93 weight percent 1,1-dichloro-2,2,3,3,3-pentafluoropropane and from about 7 to about 23 weight percent cis-1,2-dichloroethylene which boil at about 50.0.degree. C. at 753 mm Hg;

• or from about 77 to about 93 weight percent 1,1-dichloro-2,2,3,3,3-pentafluoropropane and from about 7 to about 23 weight percent of a mixture consisting of cis-1,2-dichloroethylene and trans-1,2-dichloroethylene wherein said trans-1,2-dichloroethylene is present in an amount of from about 0.1 to about 25 weight percent of said mixture which boil at about 50.0.degree. C. at 753 mm Hg;
• or from about 62 to about 82 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from about 18 to about 38 weight percent cis-1,2-dichloroethylene which boil at about 53.5.degree. C. at 751 mm Hg;
• or from about 62 to about 82 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from about 18 to about 38 weight percent of a mixture consisting of cis-1,2-dichloroethylene and trans-1,2-dichloroethylene wherein said trans-1,2-dichloroethylene is present in an amount of from about 0.1 to about 25 weight percent of said mixture which boil at about 53.5.degree. C. at 751 mm Hg;
• or from about 35 to about 60 weight percent 1,1-dichloro-2,2,3,3,3-pentafluoropropane and from about 40 to about 65 weight percent trans-1,2-dichloroethylene which boil at about 44.2.degree. C. at 745 mm Hg;
• or from about 35 to about 60 weight percent 1,1-dichloro-2,2,3,3,3-pentafluoropropane and from about 40 to about 65 weight percent of a mixture consisting of cis-1,2-dichloroethylene and trans-1,2-dichloroethylene wherein said cis-1,2-dichloroethylene is present in an amount of from about 0.1 to about 25 weight percent of said mixture which boil at about 44.2.degree. C. at 745 mm Hg;
• or from about 23 to about 49 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from about 51 to about 77 weight percent trans-1,2-dichloroethylene which boil at about 45.5.degree. C. at 743 mm Hg;
• or from about 23 to about 49 weight percent 1,3-dichloro-1,1,2,2,3-pentafluoropropane and from about 51 to about 77 weight percent of a mixture consisting of trans-1,2-dichloroethylene and cis-1,2-dichloroethylene wherein said cis-1,2-dichloroethylene is present in an amount of from about 0.1 to about 25 weight percent of said mixture which boil at about 45.5.degree. C. at 743 mm Hg;
• wherein the components of each azeotrope-like composition consist of 1,1-dichloro-2,2,3,3,3-pentafluoropropane or 1,3-dichloro-1,1,2,2,3-pentafluoropropane and cis-1,2-dichloroethylene, trans-1,2-dichloroethylene or a mixture of cis-1,2-dichloroethylene and trans-1,2-dichloroethylene.