Genetron® 23 is a HFC and is a specialty low temperature refrigerant that may be used to replace R-13 and R-503 in the low stage of cascade systems.

 
 
 
Trifluoromethane
CHF3
Substitutes
R-13 and R-503
ASHRAE number
R-23
Molecular Weight
70.0
Boiling Point @ 1 Atm. (°F)
-115.7
Freezing Point @ 1 Atm. (°F)
-247
Critical Temperature (°F)
78.2
Critical Pressure (psi a)
70.1
Saturated Liquid Density @ 86°F (lb/ft³)
74.7
Specific Heat of Liquid @ 86°C (Btu/lb °F)
0.34
Specific Heat of Vapor @
Constant Pressure (Cp) @
86°F and 1 Atm (Btu/lb °F)
Flammable range, % vol. in air
(Based on ASHRAE standard 34
with Match Ignition)++
None
ANSI/ASHRAE Standard 34-1992
Safety Group Classification
N.C. +++
 
 
   
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