Azeotropic or
azeotrope-like compositions are disclosed. The azeotropic or
azeotrope-like compositions are mixtures of E-1,1,1,4,4,4-hexafluoro-2-
butene with
methyl formate, n-
pentane, 2-methylbutane trans-1,2-dichloroethylene, 1,1,1,3,3-
pentafluoropropane, n-
butane or
isobutane. Also disclosed is a process of preparing a
thermoplastic or thermoset foam by using such azeotropic or
azeotrope-like compositions as blowing agents. Also disclosed is a process of producing
refrigeration by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as solvents. Also disclosed is a process of producing an
aerosol product by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as
heat transfer media. Also disclosed is a process of extinguishing or suppressing a fire by using such azeotropic or azeotrope-like compositions. Also disclosed is a process of using such azeotropic or azeotrope-like compositions as dielectrics.