Propane (R290) Thermodynamic properties

Saturation tables by temperature and by pressure, superheated vapor table, p–h and T–s diagrams and constants of Propane (C₃H₈), computed with CoolProp. Any other state of Propane, from any two properties, in the State Explorer or the Worksheet.

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Constants

Formula: C₃H₈
Also known as: Propane, propane, R290, C3H8, PROPANE, N-PROPANE, NC3H8, n-C3H8
CAS: 74-98-6
Molar mass: 44.096 g/mol
Normal boiling point (1 atm): -42.114 °C (231.04 K)
Critical temperature: 96.74 °C (369.89 K)
Critical pressure: 4.2512 MPa
Critical density: 220.48 kg/m³
Triple point: -187.62 °C, 0.00000017185 kPa
Acentric factor: 0.1521
Valid up to: 376.85 °C, 1000 MPa

Saturation table

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

Saturated Propane, 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)
-180	0.0000029386	0.0013789	5976800	-182.01	555.09	373.08	-1.232	4.727
-160	0.00071368	0.001419	29894	-143.32	535.36	392.03	-0.85585	3.8755
-140	0.02904	0.0014609	864.49	-104.09	516.52	412.43	-0.53661	3.3426
-120	0.40774	0.0015054	70.784	-64.207	498.32	434.11	-0.25763	2.9962
-100	2.8994	0.0015534	11.231	-23.56	480.44	456.88	-0.0082558	2.7664
-80	13.049	0.0016058	2.7676	18.028	462.41	480.44	0.2189	2.613
-60	42.693	0.0016637	0.9225	60.811	443.63	504.44	0.42938	2.5107
-40	111.12	0.0017288	0.37985	105.12	423.36	528.48	0.62751	2.4433
-20	244.52	0.0018036	0.18167	151.36	400.77	552.13	0.81676	2.3999
0	474.46	0.0018918	0.096614	200	374.87	574.87	1	2.3724
20	836.46	0.0019998	0.055303	251.64	344.32	595.95	1.1799	2.3544
40	1369.4	0.0021392	0.033151	307.15	307.07	614.21	1.3593	2.3399
60	2116.8	0.0023366	0.020205	368.14	259.23	627.36	1.5429	2.321
80	3131.9	0.0026789	0.011847	438.93	189.8	628.73	1.7417	2.2791

Saturation table by pressure

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

Saturated Propane, 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	-111.54	0.0015253	30.438	-47.119	490.74	443.62	-0.14904	2.8876
2	-104.24	0.0015429	15.894	-32.24	484.22	451.98	-0.058998	2.8077
3	-99.599	0.0015544	10.879	-22.735	480.08	457.35	-0.0034989	2.7627
5	-93.323	0.0015704	6.7543	-9.7905	474.46	464.67	0.069752	2.7082
10	-83.919	0.0015951	3.5437	9.7933	465.98	475.78	0.17585	2.6384
20	-73.306	0.0016245	1.8624	32.2	456.24	488.44	0.29097	2.574
30	-66.436	0.0016444	1.2791	46.895	449.8	496.69	0.36319	2.5391
50	-56.967	0.001673	0.79691	67.423	440.67	508.09	0.46012	2.4985
100	-42.412	0.0017205	0.41898	99.686	425.91	525.59	0.60415	2.45
200	-25.451	0.0017821	0.21944	138.54	407.21	545.75	0.76589	2.4099
300	-14.176	0.0018277	0.14975	165.26	393.62	558.87	0.87062	2.3905
500	1.729	0.0019002	0.091836	204.34	372.43	576.77	1.0156	2.3705
1000	26.942	0.0020437	0.046123	270.41	332.28	602.69	1.242	2.3493
2000	57.262	0.0023043	0.021632	359.36	266.65	626.02	1.5173	2.3243
3000	77.712	0.0026247	0.012667	429.99	199.71	629.7	1.7173	2.2865

Diagrams

p–h diagram of Propane, with isotherms

T–s diagram of Propane, with isobars

Superheated vapor table

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

Superheated Propane at 50 kPa (Tsat -56.967 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.79691	468.24	508.09	2.4985
-50	0.82449	476.43	517.65	2.5421
0	1.0193	540.32	591.29	2.8392
50	1.2111	614.44	675	3.1201
100	1.4017	699.66	769.75	3.3923
150	1.5916	796.08	875.66	3.6584
200	1.7811	903.3	992.36	3.9189
250	1.9704	1020.7	1119.3	4.1736

Superheated Propane at 100 kPa (Tsat -42.412 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.41898	483.69	525.59	2.45
0	0.50413	539.13	589.54	2.7041
50	0.60179	613.63	673.81	2.9869
100	0.6981	699.06	768.87	3.26
150	0.79373	795.6	874.97	3.5266
200	0.88898	902.91	991.81	3.7873
250	0.98399	1020.4	1118.8	4.0423

Superheated Propane at 200 kPa (Tsat -25.451 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.21944	501.86	545.75	2.4099
0	0.24637	536.64	585.91	2.5641
50	0.29705	611.97	671.38	2.851
100	0.34627	697.84	767.1	3.1261
150	0.39478	794.64	873.6	3.3936
200	0.4429	902.12	990.7	3.655
250	0.49077	1019.7	1117.9	3.9103

Superheated Propane at 500 kPa (Tsat 1.729 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.091836	530.85	576.77	2.3705
50	0.114	606.7	663.7	2.6617
100	0.1351	694.07	761.63	2.9431
150	0.15539	791.72	869.41	3.2139
200	0.17525	899.72	987.34	3.4771
250	0.19485	1017.7	1115.1	3.7336

Superheated Propane at 1 MPa (Tsat 26.942 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.046123	556.57	602.69	2.3493
50	0.052523	596.67	649.2	2.4986
100	0.064577	687.36	751.93	2.7941
150	0.075548	786.65	862.2	3.0711
200	0.086019	895.63	981.65	3.3377
250	0.09621	1014.2	1110.4	3.5963

Superheated Propane at 2 MPa (Tsat 57.262 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.021632	582.75	626.02	2.3243
100	0.028969	671.72	729.66	2.6197
150	0.035533	775.71	846.77	2.9141
200	0.041387	887.08	969.85	3.1889
250	0.046901	1007.2	1101	3.4522

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