R143a Thermodynamic properties

Saturation tables by temperature and by pressure, superheated vapor table, p–h and T–s diagrams and constants of R143a (C₂F₃H₃), computed with CoolProp. Any other state of R143a, from any two properties, in the State Explorer or the Worksheet.

Calculate a state of R143a Open it in the Worksheet

Constants

Formula: C₂F₃H₃
Also known as: R143A
CAS: 420-46-2
Molar mass: 84.041 g/mol
Normal boiling point (1 atm): -47.241 °C (225.91 K)
Critical temperature: 72.707 °C (345.86 K)
Critical pressure: 3.7618 MPa
Critical density: 431 kg/m³
Triple point: -111.81 °C, 1.0749 kPa
Acentric factor: 0.26149
Valid up to: 376.85 °C, 150 MPa

Saturation table

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

Saturated R143a, 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)
-100	3.3313	0.00076811	5.1127	66.868	259.94	326.81	0.39998	1.9012
-80	15.722	0.0007986	1.1971	91.552	247.85	339.4	0.53481	1.818
-60	53.066	0.00083291	0.38446	116.99	235.23	352.21	0.65992	1.7635
-40	141.09	0.0008723	0.1535	143.38	221.48	364.86	0.77791	1.7279
-20	315.36	0.00091887	0.071246	170.95	205.96	376.91	0.8907	1.7043
0	619.67	0.00097629	0.036622	200	187.81	387.81	1	1.6876
20	1105.2	0.0010517	0.020054	231.03	165.73	396.76	1.1078	1.6732
40	1831.4	0.0011624	0.011234	265.04	137.15	402.19	1.2174	1.6553
60	2874.4	0.001372	0.005944	305.09	94.15	399.24	1.3372	1.6198

Saturation table by pressure

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

Saturated R143a, 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)
2	-105.57	0.00076019	8.2549	60.088	263.29	323.38	0.36019	1.9313
3	-101.18	0.00076642	5.6407	65.43	260.65	326.08	0.39166	1.9073
5	-95.245	0.00077507	3.4941	72.682	257.08	329.77	0.4331	1.8782
10	-86.376	0.00078851	1.8268	83.613	251.74	335.35	0.49304	1.8408
20	-76.395	0.00080447	0.95621	96.074	245.63	341.71	0.55799	1.8064
30	-69.951	0.00081529	0.65493	104.22	241.61	345.83	0.5987	1.7877
50	-61.091	0.00083092	0.40645	115.58	235.94	351.52	0.6533	1.7659
100	-47.518	0.00085679	0.21232	133.33	226.82	360.15	0.73427	1.7395
200	-31.774	0.00089042	0.11026	154.56	215.35	369.92	0.82483	1.717
300	-21.353	0.00091543	0.074766	169.05	207.08	376.12	0.8832	1.7056
500	-6.714	0.00095547	0.045385	190.06	194.26	384.32	0.96358	1.6927
1000	16.332	0.001036	0.022328	225.15	170.16	395.32	1.0881	1.6759
2000	43.748	0.0011903	0.010056	271.92	130.63	402.55	1.2386	1.6508
3000	61.996	0.0014077	0.0055101	309.81	88.05	397.86	1.3507	1.6135

Diagrams

p–h diagram of R143a, with isotherms

T–s diagram of R143a, with isobars

Superheated vapor table

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

Superheated R143a at 20 kPa (Tsat -76.395 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.95621	322.58	341.71	1.8064
-50	1.0927	339.91	361.77	1.902
0	1.345	376.45	403.35	2.0698
50	1.5945	418.08	449.97	2.2263
100	1.8431	464.58	501.44	2.3743
150	2.0912	515.6	557.42	2.5149
200	2.3391	570.7	617.48	2.649

Superheated R143a at 50 kPa (Tsat -61.091 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.40645	331.19	351.52	1.7659
-50	0.43034	338.85	360.37	1.8066
0	0.53428	375.95	402.67	1.9774
50	0.6354	417.78	449.55	2.1347
100	0.73555	464.37	501.15	2.283
150	0.83526	515.43	557.19	2.4239
200	0.93475	570.56	617.3	2.5581

Superheated R143a at 100 kPa (Tsat -47.518 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.21232	338.92	360.15	1.7395
0	0.26399	375.11	401.51	1.9057
50	0.31568	417.27	448.84	2.0646
100	0.36637	464.01	500.65	2.2135
150	0.41663	515.16	556.82	2.3547
200	0.46664	570.34	617.01	2.489

Superheated R143a at 200 kPa (Tsat -31.774 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.11026	347.87	369.92	1.717
0	0.12877	373.39	399.14	1.8307
50	0.15579	416.24	447.4	1.9928
100	0.18178	463.3	499.65	2.143
150	0.2073	514.61	556.07	2.2848
200	0.23259	569.9	616.42	2.4195

Superheated R143a at 500 kPa (Tsat -6.714 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.045385	361.62	384.32	1.6927
0	0.047286	367.72	391.36	1.7188
50	0.059779	413.04	442.92	1.8921
100	0.070992	461.1	496.59	2.0464
150	0.081703	512.94	553.79	2.1902
200	0.092159	568.55	614.63	2.326

Superheated R143a at 1 MPa (Tsat 16.332 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.022328	372.99	395.32	1.6759
50	0.027598	407.13	434.73	1.8048
100	0.034018	457.26	491.27	1.9675
150	0.039824	510.08	549.91	2.1148
200	0.045348	566.28	611.63	2.2526

Superheated R143a at 2 MPa (Tsat 43.748 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.010056	382.44	402.55	1.6508
50	0.010897	391.16	412.95	1.6833
100	0.015428	448.75	479.6	1.8755
150	0.018863	504.09	541.82	2.032
200	0.021943	561.63	605.51	2.1742

Enthalpy and entropy are measured from R143a's own reference state (CoolProp's default). The textbooks' refrigerant tables use ASHRAE's: in the Worksheet, write reference ASHRAE.