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Genetron® MP66

An interim replacement for R-12 in low-temperature commercial refrigeration systems. For transport refrigeration, low temperature retrofits, retrofits including air conditioners and dehumidifiers.

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    General Information

    • ASHRAE #R-401B
    • ClassHCFC
    • Refrigerant TypeBlend
    • Typical LubricantAlkylbenzene
    • SubstitutesCFC-12
    • ContainsHCFC-22 (61%), HFC-152a (11%), HCFC-124 (28%)
    • GlideModerate
    • NotesIn most cases, no oil change is needed. Best for low temperature R-12 and R-500 retrofit appllications.

    Physical Properties

    • Chemical NameChlorodifluoromethane, Difluoroethane, Chlorotetrafluoroethane
    • Chemical NotationCHClF2, CHF2CH, CHClFCF3
    • Molecular Weight (lbm/lbmol)92.9
    • Boiling Point @ 1 Atm, (°F)-30.2
    • Critical Temperature (°F) (ASTM D-1321)222.02
    • Critical Pressure* (psia)681.66
    • Saturated Liquid Density @ 86°F, (lb/ft3)73.1
    • Specific Heat of Liquid @ 86°F, (Btu/lb•°F)0.31
    • Specific Heat of Vapor @ Constant Pressure* (Cp), @ 86° and 1 Atm, (Btu/lb•°F)0.15
    • Flammable range, %vol. in air (Based on ASHRAE Standard 34 with Match Ignition)None
    • ANSI/ASHRAE Standard 34-1992 Safety Group ClassificationA1