This chapter presents data for thermodynamic and transport propertiesof refrigerants, arranged for the occasional user. The refrigerants have athermodynamic property chart on pressure-enthalpy coordinates with an abbreviatedset of tabular data for saturated liquid and vapor on the facing page. Inaddition, tabular data in the superheated vapor region are given for R-134a toassist students working on compression cycle examples. Most CFC refrigerantshave been deleted. Tables for R-11, R-13, R-113, R-114, R-141b, R-142b, R-500,R-502, R-503, and R-720 (neon) may be found in the 1997 ASHRAE Handbook—Fundamentals. R-12 has been retained to assist inmaking comparisons. Hydrogen and parahydrogen (R-702 and R-702p) may be foundin the 2009 ASHRAE Handbook–Fundamentals.In 2017, a table and diagram for R-1233zd(E) was added, and the data forR-245fa and R-1234ze(E) were revised. Viscosity data for R-1234yf also were revised.The formulations conform to international standards, where applicable:thermodynamic properties of R-12, R-22, R-32, R-123, R-125, R-134a, R-143a,R-152a, R-717 (ammonia), and R-744 (carbon dioxide) and refrigerant blendsR-404A, R-407C, R-410A, and R-507 conform to ISO Standard 17584, Refrigerant Properties.

Halocarbon Refrigerants
Methane Series
R-12 (dichlorodifluoromethane)
R-22 (chlorodifluoromethane)
R-23 (trifluoromethane)
R-32 (difluoromethane)
Ethane Series
R-123 (2,2-dichloro-1,1,1-trifluoroethane)
R-124 (2-chloro-1,1,1,2-tetrafluoroethane)
R-125 (pentafluoroethane)
R-134a (1,1,1,2-tetrafluoroethane)
R-143a (1,1,1-trifluoroethane)
R-152a (1,1-difluoroethane)
Propane Series
R-245fa(1,1,1,3,3-pentafluoropropane)
Propylene Series
R-1233zd(E)(trans-1-chloro-3,3,3-trifluoroprop-1-ene)
R-1234yf (2,3,3,3-tetrafluoroprop-1-ene)
R-1234ze(E) (trans-1,3,3,3-tetrafluoropropene)
Zeotropic Blends (% by mass)
R-404A [R-125/143a/134a (44/52/4)]
R-407C [R-32/125/134a (23/25/52)]
R-410A [R-32/125 (50/50)]
Azeotropic Blends
R-507A [R-125/143a (50/50)]
Inorganic Refrigerants
R-717 (ammonia)
R-718 (water/steam)
R-744 (carbon dioxide)
Hydrocarbon Refrigerants
R-50 (methane)
R-170 (ethane)
R-290 (propane)
R-600 (n-butane)
R-600a (isobutane)
R-1150 (ethylene)
R-1270 (propylene)
Cryogenic Fluids
R-704 (helium)
R-728 (nitrogen)
R-729 (air)
R-732 (oxygen)
R-740 (argon)
Absorption Solutions
Ammonia/Water
Water/Lithium Bromide

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