Genetron® AZ-20 (R410a) is an HFC azeotropic mixture of HFC-32 and HFC-125. It is designed to replace R-22 in air conditioning and refrigeration applications.

 
 
 
Diflucromethane and Pentafluorethane
Substitutes
R-22
ASHRAE number
R-410a
Molecular Weight
72.6
Boiling Point @ 1 Atm. (°F)
-62.9
Freezing Point @ 1 Atm. (°F)
-247
Critical Temperature (°F)
163
Critical Pressure (psi a)
720
Saturated Liquid Density @ 86°F (lb/ft³)
64.64
Specific Heat of Liquid @ 86°C (Btu/lb °F)
0.42
Specific Heat of Vapor @
Constant Pressure (Cp) @
86°F and 1 Atm (Btu/lb °F)
0.21
Flammable range, % vol. in air
(Based on ASHRAE standard 34
with Match Ignition)++
None
ANSI/ASHRAE Standard 34-1992
Safety Group Classification
A1/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