R32 Thermodynamic properties

Saturation tables by temperature and by pressure, superheated vapor table, p–h and T–s diagrams and constants of R32 (CF₂H₂), computed with CoolProp. Any other state of R32, from any two properties, in the State Explorer or the Worksheet.

Calculate a state of R32 Open it in the Worksheet

Constants

Formula: CF₂H₂
CAS: 75-10-5
Molar mass: 52.024 g/mol
Normal boiling point (1 atm): -51.651 °C (221.5 K)
Critical temperature: 78.105 °C (351.26 K)
Critical pressure: 5.7827 MPa
Critical density: 424 kg/m³
Triple point: -136.81 °C, 0.048 kPa
Acentric factor: 0.2769
Valid up to: 161.85 °C, 70 MPa

Saturation table

By temperature: saturated liquid (f) and saturated vapor (g).

Saturated R32, by temperature
T °C	Psat kPa	vf m³/kg	vg m³/kg	hf kJ/kg	hfg kJ/kg	hg kJ/kg	sf kJ/(kg·K)	sg kJ/(kg·K)
-120	0.47765	0.00072028	51.184	7.5199	447.81	455.33	0.078975	3.003
-100	3.813	0.00074681	7.222	38.826	429.48	468.31	0.2711	2.7515
-80	18.654	0.00077616	1.6316	70.016	410.71	480.72	0.44151	2.5679
-60	64.955	0.00080924	0.50786	101.38	390.73	492.11	0.59581	2.4289
-40	177.41	0.00084734	0.19743	133.23	368.79	502.02	0.73819	2.32
-20	405.75	0.00089241	0.089628	165.94	344.03	509.97	0.87197	2.231
0	813.1	0.00094763	0.045267	200	315.3	515.3	1	2.1543
20	1474.6	0.001019	0.024476	236.12	280.78	516.9	1.1253	2.0831
40	2478.3	0.0011198	0.013649	275.61	237.1	512.71	1.252	2.0091
60	3933.2	0.0012931	0.0073957	321.93	175.51	497.44	1.3898	1.9166

Saturation table by pressure

By pressure: saturated liquid (f) and saturated vapor (g).

Saturated R32, by pressure
P kPa	Tsat °C	vf m³/kg	vg m³/kg	hf kJ/kg	hfg kJ/kg	hg kJ/kg	sf kJ/(kg·K)	sg kJ/(kg·K)
1	-113.52	0.00072861	25.462	17.691	441.88	459.57	0.14402	2.9122
2	-106.84	0.00073746	13.248	28.152	435.76	463.91	0.20821	2.8283
3	-102.62	0.0007432	9.0473	34.744	431.89	466.63	0.24735	2.7799
5	-96.93	0.00075112	5.5997	43.615	426.65	470.26	0.29851	2.7196
10	-88.467	0.00076334	2.9241	56.808	418.76	475.57	0.37162	2.6391
20	-78.997	0.00077773	1.5286	71.582	409.74	481.32	0.44959	2.56
30	-72.913	0.0007874	1.0463	81.094	403.81	484.9	0.49779	2.5144
50	-64.585	0.00080127	0.64884	94.156	395.46	489.61	0.56162	2.4577
100	-51.909	0.00082396	0.33885	114.18	382.14	496.32	0.65464	2.3819
200	-37.323	0.00085292	0.17625	137.55	365.66	503.21	0.75653	2.3071
300	-27.731	0.000874	0.11981	153.17	354	507.17	0.82109	2.2635
500	-14.331	0.00090685	0.073186	175.43	336.35	511.79	0.90872	2.2083
1000	6.624	0.00096905	0.036713	211.69	304.63	516.32	1.0416	2.1305
2000	31.431	0.0010715	0.017512	258.15	257.27	515.42	1.1971	2.0418
3000	48.015	0.0011755	0.010772	292.98	215.49	508.48	1.3049	1.9758
5000	71.183	0.0015008	0.0048191	356	120.27	476.27	1.4859	1.8352

Diagrams

p–h diagram of R32, with isotherms

T–s diagram of R32, with isobars

Superheated vapor table

At each pressure, from its saturated vapor (Sat.) to higher temperatures.

Superheated R32 at 50 kPa (Tsat -64.585 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.64884	457.17	489.61	2.4577
-60	0.66494	460.06	493.31	2.4752
-40	0.73327	472.4	509.07	2.5459
-20	0.79993	484.78	524.77	2.6105
0	0.8657	497.45	540.73	2.6712
20	0.93094	510.55	557.09	2.729
40	0.99586	524.16	573.95	2.7846
60	1.0605	538.34	591.37	2.8385
80	1.1251	553.12	609.38	2.891
100	1.1895	568.53	628.01	2.9423
120	1.2539	584.58	647.27	2.9926
140	1.3181	601.26	667.17	3.042
160	1.3824	618.59	687.7	3.0905

Superheated R32 at 100 kPa (Tsat -51.909 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.33885	462.44	496.32	2.3819
-40	0.36044	470.39	506.44	2.4265
-20	0.39525	483.37	522.89	2.4942
0	0.4291	496.39	539.3	2.5566
20	0.4624	509.72	555.96	2.6154
40	0.49536	523.48	573.02	2.6717
60	0.52809	537.78	590.58	2.7261
80	0.56067	552.64	608.71	2.7789
100	0.59314	568.11	627.43	2.8304
120	0.62552	584.21	646.76	2.8809
140	0.65783	600.93	666.71	2.9304
160	0.6901	618.28	687.29	2.979

Superheated R32 at 200 kPa (Tsat -37.323 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.17625	467.96	503.21	2.3071
-20	0.19276	480.43	518.98	2.3717
0	0.21073	494.22	536.37	2.4378
20	0.22809	508.03	553.65	2.4988
40	0.24509	522.12	571.14	2.5565
60	0.26186	536.63	589.01	2.6118
80	0.27846	551.67	607.36	2.6653
100	0.29494	567.26	626.25	2.7174
120	0.31135	583.45	645.72	2.7682
140	0.32768	600.26	665.79	2.818
160	0.34397	617.67	686.47	2.8668

Superheated R32 at 500 kPa (Tsat -14.331 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.073186	475.19	511.79	2.2083
0	0.079401	487.18	526.88	2.2651
20	0.08735	502.7	546.38	2.334
40	0.094842	517.87	565.29	2.3964
60	0.10206	533.12	584.15	2.4548
80	0.1091	548.68	603.23	2.5104
100	0.11601	564.68	622.68	2.564
120	0.12283	581.18	642.59	2.6159
140	0.12958	598.22	663.02	2.6666
160	0.13628	615.84	683.98	2.7162

Superheated R32 at 1 MPa (Tsat 6.624 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.036713	479.6	516.32	2.1305
20	0.040102	492.64	532.74	2.1879
40	0.044588	510.19	554.78	2.2606
60	0.048699	526.93	575.63	2.3252
80	0.052589	543.5	596.09	2.3848
100	0.056333	560.24	616.57	2.4412
120	0.059974	577.29	637.27	2.4952
140	0.06354	594.78	658.32	2.5475
160	0.067048	612.75	679.8	2.5982

Superheated R32 at 2 MPa (Tsat 31.431 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.017512	480.4	515.42	2.0418
40	0.018961	491.28	529.2	2.0864
60	0.021781	512.82	556.38	2.1707
80	0.024208	532.19	580.6	2.2413
100	0.026423	550.78	603.62	2.3047
120	0.028505	569.17	626.18	2.3636
140	0.030495	587.66	648.65	2.4193
160	0.032419	606.41	671.25	2.4728

Enthalpy and entropy are measured from R32's own reference state (CoolProp's default). The textbooks' refrigerant tables use ASHRAE's: in the Worksheet, write reference ASHRAE.