R404A Thermodynamic properties

Saturation tables by temperature and by pressure, superheated vapor table, p–h and T–s diagrams and constants of R404A, computed with CoolProp. Any other state of R404A, from any two properties, in the State Explorer or the Worksheet.

Calculate a state of R404A Open it in the Worksheet

Constants

Also known as: R404a
CAS: R404A.PPF
Molar mass: 97.604 g/mol
Bubble and dew points at 1 atm: -46.222 °C, -45.472 °C
Critical temperature: 72.12 °C (345.27 K)
Critical pressure: 3.7348 MPa
Critical density: 482.16 kg/m³
Triple point: -73.15 °C, 22.649 kPa
Acentric factor: 0.293
Valid up to: 226.85 °C, 50 MPa

Saturation table

R404A is a mixture: at a temperature, it starts boiling (bubble) and ends (dew) at different pressures.

Saturated R404A, by temperature
T °C	P bubble kPa	P dew kPa	vf m³/kg	vg m³/kg	hf kJ/kg	hfg kJ/kg	hg kJ/kg	sf kJ/(kg·K)	sg kJ/(kg·K)
-70	27.654	26.073	0.00072589	0.65079	109.93	215.29	325.22	0.62215	1.6852
-60	49.774	47.457	0.00074183	0.37157	122.18	209.16	331.34	0.68093	1.6648
-50	84.236	81.009	0.00075879	0.22506	134.56	202.88	337.45	0.73759	1.6488
-40	135.29	130.98	0.00077702	0.14315	147.13	196.35	343.48	0.7925	1.6363
-30	207.78	202.23	0.0007968	0.094797	159.92	189.48	349.4	0.84596	1.6266
-20	307.1	300.18	0.00081847	0.064903	172.96	182.18	355.14	0.8982	1.6189
-10	439.12	430.73	0.00084252	0.045662	186.3	174.34	360.64	0.94947	1.6129
0	610.18	600.27	0.00086958	0.032834	200	165.82	365.82	1	1.6078
10	827.08	815.69	0.00090059	0.024009	214.12	156.45	370.57	1.0501	1.6032
20	1097.2	1084.4	0.00093697	0.017766	228.74	146.01	374.75	1.1	1.5985
30	1428.4	1414.5	0.00098099	0.013229	244.02	134.14	378.16	1.1501	1.5929
40	1829.5	1815	0.0010367	0.009845	260.15	120.3	380.46	1.2012	1.5856
50	2310.9	2296.2	0.0011123	0.0072409	277.55	103.48	381.03	1.2542	1.5746
60	2885	2871.2	0.0012295	0.0051366	297.13	81.271	378.4	1.3118	1.5559
70	3572.1	3563.3	0.0015197	0.0031178	323.72	41.525	365.25	1.3876	1.5087

Saturation table by pressure

At a pressure, R404A starts boiling (bubble) and ends (dew) at different temperatures.

Saturated R404A, by pressure
P kPa	T bubble °C	T dew °C	vf m³/kg	vg m³/kg	hf kJ/kg	hfg kJ/kg	hg kJ/kg	sf kJ/(kg·K)	sg kJ/(kg·K)
30	-68.681	-67.761	0.00072794	0.57074	111.54	215.05	326.59	0.63004	1.6802
50	-59.918	-59.071	0.00074196	0.35385	122.28	209.63	331.91	0.6814	1.6632
100	-46.496	-45.744	0.00076502	0.18463	138.94	201.08	340.03	0.75701	1.6431
200	-30.93	-30.268	0.00079489	0.095806	158.72	190.53	349.24	0.84104	1.6268
300	-20.625	-20.016	0.00081705	0.064941	172.14	183	355.13	0.89497	1.619
500	-6.15	-5.608	0.00085254	0.03941	191.53	171.43	362.96	0.969	1.6105
1000	16.64	17.081	0.00092404	0.01938	223.76	149.83	373.6	1.0832	1.5999
2000	43.749	44.062	0.001062	0.0087101	266.5	114.45	380.95	1.2207	1.5817
3000	61.808	62.014	0.0012597	0.0047476	301.08	76.081	377.16	1.3232	1.5503

Diagrams

p–h diagram of R404A, with isotherms

T–s diagram of R404A, with isobars

Superheated vapor table

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

Superheated R404A at 50 kPa (Tsat -59.071 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.35385	314.22	331.91	1.6632
-50	0.37066	320.14	338.67	1.6941
-25	0.41587	337.07	357.86	1.7756
0	0.4601	355.01	378.01	1.8529
25	0.50378	374.03	399.22	1.9272
50	0.54716	394.15	421.5	1.9989
75	0.59034	415.34	444.85	2.0685
100	0.63338	437.57	469.23	2.1361
125	0.67634	460.79	494.61	2.2019
150	0.71924	484.97	520.93	2.266
175	0.76208	510.05	548.15	2.3285
200	0.80489	535.98	576.22	2.3895
225	0.84766	562.72	605.1	2.4489

Superheated R404A at 100 kPa (Tsat -45.744 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.18463	321.56	340.03	1.6431
-25	0.20441	336.06	356.5	1.7125
0	0.22737	354.29	377.03	1.7912
25	0.24978	373.48	398.46	1.8663
50	0.27186	393.71	420.9	1.9385
75	0.29375	414.98	444.35	2.0084
100	0.31551	437.26	468.81	2.0763
125	0.33717	460.53	494.25	2.1422
150	0.35877	484.74	520.61	2.2064
175	0.38032	509.84	547.87	2.269
200	0.40183	535.79	575.97	2.33
225	0.42331	562.55	604.88	2.3895

Superheated R404A at 200 kPa (Tsat -30.268 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.095806	330.08	349.24	1.6268
-25	0.098536	333.99	353.69	1.6449
0	0.11093	352.81	375	1.7267
25	0.12274	372.37	396.92	1.8035
50	0.1342	392.83	419.67	1.8768
75	0.14545	414.25	443.34	1.9473
100	0.15656	436.65	467.96	2.0156
125	0.16758	460	493.52	2.0818
150	0.17854	484.27	519.98	2.1463
175	0.18944	509.42	547.31	2.209
200	0.2003	535.42	575.48	2.2702
225	0.21113	562.21	604.43	2.3298

Superheated R404A at 500 kPa (Tsat -5.608 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.03941	343.26	362.96	1.6105
0	0.040768	347.95	368.34	1.6304
25	0.046368	368.83	392.01	1.7133
50	0.051522	390.07	415.83	1.7901
75	0.056426	412.01	440.23	1.8628
100	0.061174	434.77	465.36	1.9325
125	0.065818	458.38	491.29	1.9997
150	0.070389	482.86	518.05	2.0649
175	0.074906	508.17	545.62	2.1282
200	0.079383	534.29	573.98	2.1898
225	0.083827	561.18	603.1	2.2497

Superheated R404A at 1 MPa (Tsat 17.081 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.01938	354.22	373.6	1.5999
25	0.020561	361.82	382.38	1.6297
50	0.023808	384.98	408.79	1.7148
75	0.026673	408.01	434.68	1.792
100	0.029337	431.48	460.81	1.8645
125	0.031876	455.59	487.47	1.9336
150	0.034331	480.43	514.76	2.0001
175	0.036727	506.03	542.76	2.0644
200	0.039078	532.38	571.46	2.1267
225	0.041396	559.46	600.85	2.1872

Superheated R404A at 2 MPa (Tsat 44.062 °C)
T °C	v m³/kg	u kJ/kg	h kJ/kg	s kJ/(kg·K)
Sat.	0.0087101	363.53	380.95	1.5817
50	0.0094057	371.08	389.89	1.6097
75	0.011596	398.55	421.75	1.7047
100	0.013329	424.15	450.81	1.7853
125	0.014864	449.58	479.3	1.8593
150	0.016286	475.32	507.9	1.9289
175	0.017634	501.59	536.85	1.9954
200	0.01893	528.45	566.31	2.0593
225	0.020189	555.93	596.31	2.1211

Enthalpy and entropy are measured from R404A's own reference state (CoolProp's default). The textbooks' refrigerant tables use ASHRAE's: in the Worksheet, write reference ASHRAE.