Mixtures of tetrafluoropropenes with bromofluoropropenes provide compositions that have boiling points within an acceptable range, have good chemical stability, low GWP and are essentially non-flammable.
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US Patent 07597818 Azeotrope-like compositions of tetrafluoropropenes and bromofluoropropenesUS Patent 7597818 Azeotrope-like compositions of tetrafluoropropenes and bromofluoropropenes