Genetron® 500, a CFC azeotropic mixture, has slightly higher vapor pressures and provides higher capacities from the same compressor displacement. Contains CFC-12 and HFC-152a

 
 
 
Dichlorodifluoromehane and
Difluoroethane
CCI2F2
CH3CHF2
Substitutes
ASHRAE number
R-500
Molecular Weight
99.3
Boiling Point @ 1 Atm. (°F)
-28.3
Freezing Point @ 1 Atm. (°F)
-254
Critical Temperature (°F)
215.9
Critical Pressure (psi a)
605
Saturated Liquid Density @ 86°F (lb/ft³)
70.13
Specific Heat of Liquid @ 86°C (Btu/lb °F)
0.30
Specific Heat of Vapor @
Constant Pressure (Cp) @
86°F and 1 Atm (Btu/lb °F)
0.17
Flammable range, % vol. in air
(Based on ASHRAE standard 34
with Match Ignition)++
None
ANSI/ASHRAE Standard 34-1992
Safety Group Classification
A1
 
 
   
1:

@0.2 Atm pressure
 
':
 Preliminary information based on estimated properties
 
*:
 Bubble point temperature
 
+:
Upper and lower vapor flammability (Vol. %)
 
++:
 ASTM E681-85 Match ignition ambient conditions
 
+++: N.C. Not Classified
   
°:
 @ -30°F