R1234yf refrigerant (freon): characteristics (properties), tables, diagrams, studies

Topic of the article: refrigerant (freon) R1234yf, its characteristics and properties, compatibility with materials. In this publication you will find tables of temperature/pressure, thermodynamic characteristics, Mollier diagram (log(p)-h diagram) and a list of the main manufacturers.

Creation and application

Freon R1234yf was developed by Honeywell Corporation together with Chemours Company (DuPont). The purpose of his invention is to find an effective substitute for R134a refrigerant in automobile air conditioners. The possibility of its use in household and commercial air conditioners and heat pumps was also considered.

The feasibility of creating R1234yf refrigerant is due to the abandonment of R134a. Freon R134a has a high global warming potential (GWP) of 1430. The properties of R1234yf are better, its GWP is 4.

At the time of writing, R1234yf is used in almost all new cars with air conditioning. But alternatives to R134a are constantly being developed. Car air conditioning systems are being tested on R152a, the possibility of using R744 (carbon dioxide) is being studied.

Characteristics (properties) of R1234yf freon

Below is a summary table of the physical, chemical and performance properties of R1234yf refrigerant.

Properties	Value
Chemical name	2,3,3,3-tetrafluoropropene
Chemical formula	C3H2F4 (CH2CFCF3)
Molecular mass	114.0 g/mol
Melting point (experimental)	-152.24 °C
Boiling point (calculated)	-29.4 °C
Boiling point (experimental)	-28.3 °C
Flash point	26°C
Critical temperature	94.7 °C
Critical pressure	33.81 bar
Critical Density	475.55 kg/m3
Steam pressure at 21.1°C	6.07 bar
Steam pressure at 54.4°C	14.2 bar
Density at 25°C	1100 kg/m3
Relative vapor density (air = 1)	4
Solubility in water at 24°C	0.1982 g/l
Temperature glide	0 °C
ASHRAE safety class	A2L
Lower flammability limit	6.2% volume
Lower flammability limit	12.3% volume
Auto-ignition temperature	405 °C
Toxicity, limit value	0.95 g/m3
Ozone Depletion Potential ODP	0
Global Warming Potential GWP	4
Compressor oil type	POE, PAG, PVE

Research on R1234yf

Researchers from the College of Environmental and Energy Engineering, Beijing University of Technology and the College of Energy and Environment, Hebei University of Architecture conducted Experimental study of R1234yf heat pump at low ambient temperature and comparison with other refrigerants. Their conclusions:

Compared to other commonly used refrigerants, the R1234yf system has the lowest heating capacity and lowest discharge temperature when using the same compressor under the same conditions; the discharge temperature of R1234yf can be significantly lower, by 10–20 °C; and the system can operate safely for a long time even at an evaporation temperature of -20°C.

Under the same conditions, the heating performance of R1234yf is 28% and 3.9% lower than that of R22 and R134a systems; for heating, the COP of R1234yf is 5.9% lower than R134a.

R1234yf discharge temperature always increases as suction steam superheat increases, but does not exceed 95°C, even when steam suction superheat increases to 13°C at −20°C evaporation temperature. Suction steam superheat also affects heating performance and heating COP; In this study, the optimal suction steam superheat parameter is ts = 7 °C.

Researchers from the Department of Engineering Architecture of Doowon College of Engineering and Doowon Engineering Research Center conducted Development of an automotive refrigerant compressor performance analysis program and research on an alternative refrigerant R1234yf. Their results:

As a result of the performance analysis of R1234yf, the pressure loss in the suction/discharge valve increases due to the increase in refrigerant flow due to the higher suction density compared to R134a.

The increase in power required due to suction/discharge valve pressure loss when using R1234yf can be improved by increasing the suction/discharge valve flow area (valve volume or area).

R1234yf refrigerant temperature/pressure table in degrees Celsius (R1234yf p-t chart)

Below is a table of pressure versus temperature for freon R1234yf. The basis is degrees Celsius. For convenience, we have divided it into three parts:

1. -40…+4 degrees;
2. +5…+49 degrees;
3. +50…+94 degrees.

The R1234yf temperature/pressure table uses the following abbreviations:

• t,C – temperature in degrees Celsius;
• BarA – absolute pressure in bar;
• BarG – relative pressure in bar;
• kPaa – absolute pressure in kilopascals, kPa;
• kPag – relative pressure in kilopascals, kPa;
• PsiA – absolute pressure in pounds per square inch (psi);
• PsiG – relative pressure in pounds per square inch (psi).

From -40 to +4 degrees Celsius

t,C	BarA	BarG	kPaa	kPag	PsiA	PsiG
-40	0.624	-0.376	62.4	-37.6	9.05	-5.45
-39	0.655	-0.345	65.5	-34.5	9.50	-5.00
-38	0.687	-0.313	68.7	-31.3	9.96	-4.54
-37	0.72	-0.28	72	-28	10.44	-4.06
-36	0.755	-0.245	75.5	-24.5	10.95	-3.55
-35	0.79	-0.21	79	-21	11.46	-3.05
-34	0.828	-0.172	82.8	-17.2	12.01	-2.49
-33	0.866	-0.134	86.6	-13.4	12.56	-1.94
-32	0.906	-0.094	90.6	-9.4	13.14	-1.36
-31	0.948	-0.052	94.8	-5.2	13.75	-0.75
-30	0.991	-0.009	99.1	-0.9	14.37	-0.13
-29	1.035	0.035	103.5	3.5	15.01	0.51
-28	1,081	0.081	108.1	8.1	15.67	1.17
-27	1.129	0.129	112.9	12.9	16.37	1.87
-26	1.178	0.178	117.8	17.8	17.08	2.58
-25	1.229	0.229	122.9	22.9	17.82	3.32
-24	1.281	0.281	128.1	28.1	18.57	4.07
-23	1.336	0.336	133.6	33.6	19.37	4.87
-22	1,392	0.392	139.2	39.2	20.18	5.68
-21	1,449	0.449	144.9	44.9	21.01	6.51
-20	1,509	0.509	150.9	50.9	21.88	7.38
-19	1.571	0.571	157.1	57.1	22.78	8.28
-18	1.634	0.634	163.4	63.4	23.69	9.19
-17	1.7	0.7	170	70	24.65	10.15
-16	1,768	0.768	176.8	76.8	25.64	11.14
-15	1.837	0.837	183.7	83.7	26.64	12.14
-14	1,909	0.909	190.9	90.9	27.68	13.18
-13	1,983	0.983	198.3	98.3	28.75	14.25
-12	2,059	1.059	205.9	105.9	29.86	15.36
-11	2.137	1.137	213.7	113.7	30.99	16.49
-10	2.218	1.218	221.8	121.8	32.16	17.66
-9	2,301	1,301	230.1	130.1	33.36	18.86
-8	2,386	1,386	238.6	138.6	34.60	20.10
-7	2,474	1.474	247.4	147.4	35.87	21.37
-6	2,564	1,564	256.4	156.4	37.18	22.68
-5	2.656	1.656	265.6	165.6	38.51	24.01
-4	2,751	1.751	275.1	175.1	39.89	25.39
-3	2,849	1,849	284.9	184.9	41.31	26.81
-2	2.95	1.95	295	195	42.78	28.28
-1	3,053	2,053	305.3	205.3	44.27	29.77
0	3.158	2,158	315.8	215.8	45.79	31.29
1	3,267	2,267	326.7	226.7	47.37	32.87
2	3,378	2,378	337.8	237.8	48.98	34.48
3	3,492	2,492	349.2	249.2	50.63	36.13
4	3,609	2,609	360.9	260.9	52.33	37.83

From +5 to +49 degrees Celsius

t,C	BarA	BarG	kPaa	kPag	PsiA	PsiG
5	3,729	2,729	372.9	272.9	54.07	39.57
6	3.852	2.852	385.2	285.2	55.85	41.35
7	3,978	2,978	397.8	297.8	57.68	43.18
8	4.108	3.108	410.8	310.8	59.57	45.07
9	4.24	3.24	424	324	61.48	46.98
10	4.375	3.375	437.5	337.5	63.44	48.94
11	4,514	3,514	451.4	351.4	65.45	50.95
12	4.656	3.656	465.6	365.6	67.51	53.01
13	4,802	3,802	480.2	380.2	69.63	55.13
14	4.95	3.95	495	395	71.78	57.28
15	5.103	4.103	510.3	410.3	73.99	59.49
16	5,258	4,258	525.8	425.8	76.24	61.74
17	5.418	4,418	541.8	441.8	78.56	64.06
18	5.58	4.58	558	458	80.91	66.41
19	5,747	4,747	574.7	474.7	83.33	68.83
20	5,917	4,917	591.7	491.7	85.80	71.30
21	6,091	5,091	609.1	509.1	88.32	73.82
22	6,269	5,269	626.9	526.9	90.90	76.40
23	6,451	5,451	645.1	545.1	93.54	79.04
24	6,636	5.636	663.6	563.6	96.22	81.72
25	6,826	5.826	682.6	582.6	98.98	84.48
26	7,019	6,019	701.9	601.9	101.78	87.28
27	7,217	6,217	721.7	621.7	104.65	90.15
28	7,419	6,419	741.9	641.9	107.58	93.08
29	7.625	6.625	762.5	662.5	110.56	96.06
30	7.835	6.835	783.5	683.5	113.61	99.11
31	8.05	7.05	805	705	116.73	102.23
32	8,269	7,269	826.9	726.9	119.90	105.40
33	8,492	7,492	849.2	749.2	123.13	108.63
34	8.72	7.72	872	772	126.44	111.94
35	8,952	7,952	895.2	795.2	129.80	115.30
36	9,189	8,189	918.9	818.9	133.24	118.74
37	9.431	8,431	943.1	843.1	136.75	122.25
38	9,677	8,677	967.7	867.7	140.32	125.82
39	9,928	8,928	992.8	892.8	143.96	129.46
40	10.18	9.18	1018	918	147.61	133.11
41	10.45	9.45	1045	945	151.53	137.03
42	10.71	9.71	1071	971	155.30	140.80
43	10.98	9.98	1098	998	159.21	144.71
44	11.26	10.26	1126	1026	163.27	148.77
45	11.54	10.54	1154	1054	167.33	152.83
46	11.83	10.83	1183	1083	171.54	157.04
47	12.12	11.12	1212	1112	175.74	161.24
48	12.41	11.41	1241	1141	179.95	165.45
49	12.72	11.72	1272	1172	184.44	169.94

From +50 to +94 degrees Celsius

t,C	BarA	BarG	kPaa	kPag	PsiA	PsiG
50	13.02	12.02	1302	1202	188.79	174.29
51	13.34	12.34	1334	1234	193.43	178.93
52	13.66	12.66	1366	1266	198.07	183.57
53	13.98	12.98	1398	1298	202.71	188.21
54	14.31	13.31	1431	1331	207.50	193.00
55	14.65	13.65	1465	1365	212.43	197.93
56	14.99	13.99	1499	1399	217.36	202.86
57	15.34	14.34	1534	1434	222.43	207.93
58	15.69	14.69	1569	1469	227.51	213.01
59	16.05	15.05	1605	1505	232.73	218.23
60	16.42	15.42	1642	1542	238.09	223.59
61	16.79	15.79	1679	1579	243.46	228.96
62	17.17	16.17	1717	1617	248.97	234.47
63	17.56	16.56	1756	1656	254.62	240.12
64	17.95	16.95	1795	1695	260.28	245.78
65	18.35	17.35	1835	1735	266.08	251.58
66	18.75	17.75	1875	1775	271.88	257.38
67	19.17	18.17	1917	1817	277.97	263.47
68	19.59	18.59	1959	1859	284.06	269.56
69	20.01	19.01	2001	1901	290.15	275.65
70	20.45	19.45	2045	1945	296.53	282.03
71	20.89	19.89	2089	1989	302.91	288.41
72	21.33	20.33	2133	2033	309.29	294.79
73	21.79	20.79	2179	2079	315.96	301.46
74	22.25	21.25	2225	2125	322.63	308.13
75	22.72	21.72	2272	2172	329.44	314.94
76	23.2	22.2	2320	2220	336.40	321.90
77	23.69	22.69	2369	2269	343.51	329.01
78	24.18	23.18	2418	2318	350.61	336.11
79	24.68	23.68	2468	2368	357.86	343.36
80	25.19	24.19	2519	2419	365.26	350.76
81	25.71	24.71	2571	2471	372.80	358.30
82	26.24	25.24	2624	2524	380.48	365.98
83	26.78	25.78	2678	2578	388.31	373.81
84	27.32	26.32	2732	2632	396.14	381.64
85	27.88	26.88	2788	2688	404.26	389.76
86	28.44	27.44	2844	2744	412.38	397.88
87	29.02	28.02	2902	2802	420.79	406.29
88	29.6	28.6	2960	2860	429.20	414.70
89	30.2	29.2	3020	2920	437.90	423.40
90	30.8	29.8	3080	2980	446.60	432.10
91	31.42	30.42	3142	3042	455.59	441.09
92	32.05	31.05	3205	3105	464.73	450.23
93	32.69	31.69	3269	3169	474.01	459.51
94	33.35	32.35	3335	3235	483.58	469.08

R1234yf freon temperature/pressure table in degrees Fahrenheit (R1234yf p-t chart)

This section of the publication provides a table of pressure versus temperature for R1234yf refrigerant in degrees Fahrenheit. For ease of viewing, it is divided into four parts:

1. From -50 to 0 degrees;
2. From +1 to +50 degrees;
3. From +51 to 100 degrees;
4. From +101 to +150 degrees.

The R1234yf temperature/pressure table uses the following abbreviations:

• t,F – temperature in degrees Fahrenheit;
• PsiA – absolute pressure in pounds per square inch (psi);
• PsiG – relative pressure in pounds per square inch (psi);
• kPaa – absolute pressure in kilopascals, kPa;
• kPag – relative pressure in kilopascals, kPa.

-50 to 0 degrees

t,F	Psia	Psig	kPaa	kPag
-50	6.9	-7.8	47.3	-54.1
-49	7.1	-7.6	48.7	-52.7
-48	7.3	-7.4	50.0	-51.3
-47	7.5	-7.2	51.5	-49.9
-46	7.7	-7.0	52.9	-48.4
-45	7.9	-6.8	54.4	-46.9
-44	8.1	-6.6	55.9	-45.4
-43	8.3	-6.4	57.5	-43.8
-42	8.6	-6.1	59.1	-42.3
-41	8.8	-5.9	60.7	-40.6
-40	9.0	-5.7	62.4	-39.0
-39	9.3	-5.4	64.1	-37.3
-38	9.5	-5.2	65.8	-35.5
-37	9.8	-4.9	67.6	-33.7
-36	10.1	-4.6	69.4	-31.9
-35	10.3	-4.4	71.3	-30.1
-34	10.6	-4.1	73.2	-28.2
-33	10.9	-3.8	75.1	-26.3
-32	11.2	-3.5	77.1	-24.3
-31	11.5	-3.2	79.1	-22.3
-30	11.8	-2.9	81.1	-20.2
-29	12.1	-2.6	83.2	-18.1
-28	12.4	-2.3	85.3	-16.0
-27	12.7	-2.0	87.5	-13.8
-26	13.0	-1.7	89.7	-11.6
-25	13.3	-1.4	92.0	-9.3
-24	13.7	-1.0	94.3	-7.0
-23	14.0	-0.7	96.7	-4.7
-22	14.4	-0.3	99.1	-2.3
-21	14.7	0.0	101.5	0.2
-20	15.1	0.4	104.0	2.7
-19	15.5	0.8	106.6	5.2
-18	15.8	1.1	109.2	7.8
-17	16.2	1.5	111.8	10.5
-16	16.6	1.9	114.5	13.2
-15	17.0	2.3	117.2	15.9
-14	17.4	2.7	120.0	18.7
-13	17.8	3.1	122.9	21.5
-12	18.2	3.5	125.8	24.4
-11	18.7	4.0	128.7	27.4
-10	19.1	4.4	131.7	30.4
-9	19.6	4.9	134.8	33.5
-8	20.0	5.3	137.9	36.6
-7	20.5	5.8	141.1	39.7
-6	20.9	6.2	144.3	43.0
-5	21.4	6.7	147.6	46.3
-4	21.9	7.2	150.9	49.6
-3	22.4	7.7	154.3	53.0
-2	22.9	8.2	157.8	56.5
-1	23.4	8.7	161.3	60.0
0	23.9	9.2	164.9	63.6

From +1 to +50 degrees

t,F	Psia	Psig	kPaa	kPag
1	24.4	9.7	168.6	67.2
2	25.0	10.3	172.3	70.9
3	25.5	10.8	176.0	74.7
4	26.1	11.4	179.9	78.5
5	26.7	12.0	183.8	82.4
6	27.2	12.5	187.7	86.4
7	27.8	13.1	191.7	90.4
8	28.4	13.7	195.8	94.5
9	29.0	14.3	200.0	98.6
10	29.6	14.9	204.2	102.9
11	30.2	15.5	208.5	107.2
12	30.9	16.2	212.9	111.5
13	31.5	16.8	217.3	116.0
14	32.2	17.5	221.8	120.5
15	32.8	18.1	226.4	125.0
16	33.5	18.8	231.0	129.7
17	34.2	19.5	235.8	134.4
18	34.9	20.2	240.6	139.2
19	35.6	20.9	245.4	144.1
20	36.3	21.6	250.4	149.0
21	37.0	22.3	255.4	154.0
22	37.8	23.1	260.5	159.1
23	38.5	23.8	265.7	164.3
24	39.3	24.6	270.9	169.6
25	40.1	25.4	276.2	174.9
26	40.9	26.2	281.7	180.3
27	41.6	26.9	287.1	185.8
28	42.5	27.8	292.7	191.4
29	43.3	28.6	298.4	197.0
30	44.1	29.4	304.1	202.8
31	45.0	30.3	309.9	208.6
32	45.8	31.1	315.8	214.5
33	46.7	32.0	321.8	220.5
34	47.6	32.9	327.9	226.6
35	48.5	33.8	334.1	232.7
36	49.4	34.7	340.3	239.0
37	50.3	35.6	346.7	245.3
38	51.2	36.5	353.1	251.8
39	52.2	37.5	359.6	258.3
40	53.1	38.4	366.2	264.9
41	54.1	39.4	373.0	271.6
42	55.1	40.4	379.7	278.4
43	56.1	41.4	386.6	285.3
44	57.1	42.4	393.6	292.3
45	58.1	43.4	400.7	299.4
46	59.2	44.5	407.9	306.5
47	60.2	45.5	415.2	313.8
48	61.3	46.6	422.5	321.2
49	62.4	47.7	430.0	328.6
50	63.5	48.8	437.6	336.2

From +51 to 100 degrees

t,F	Psia	Psig	kPaa	kPag
51	64.6	49.9	445.2	343.9
52	65.7	51.0	453.0	351.6
53	66.8	52.1	460.9	359.5
54	68.0	53.3	468.8	367.5
55	69.2	54.5	476.9	375.6
56	70.4	55.7	485.1	383.7
57	71.6	56.9	493.4	392.0
58	72.8	58.1	501.8	400.4
59	74.0	59.3	510.3	408.9
60	75.3	60.6	518.9	417.5
61	76.5	61.8	527.6	426.3
62	77.8	63.1	536.4	435.1
63	79.1	64.4	545.4	444.0
64	80.4	65.7	554.4	453.1
65	81.7	67.0	563.6	462.2
66	83.1	68.4	572.9	471.5
67	84.4	69.7	582.2	480.9
68	85.8	71.1	591.7	490.4
69	87.2	72.5	601.4	500.0
70	88.6	73.9	611.1	509.8
71	90.1	75.4	621.0	519.6
72	91.5	76.8	630.9	529.6
73	93.0	78.3	641.0	539.7
74	94.5	79.8	651.2	549.9
75	96.0	81.3	661.6	560.2
76	97.5	82.8	672.0	570.7
77	99.0	84.3	682.6	581.3
78	100.6	85.9	693.3	592.0
79	102.1	87.4	704.1	602.8
80	103.7	89.0	715.1	613.7
81	105.3	90.6	726.2	624.8
82	107.0	92.3	737.4	636.0
83	108.6	93.9	748.7	647.4
84	110.3	95.6	760.2	658.9
85	111.9	97.2	771.8	670.5
86	113.6	98.9	783.5	682.2
87	115.4	100.7	795.4	694.1
88	117.1	102.4	807.4	706.1
89	118.9	104.2	819.5	718.2
90	120.6	105.9	831.8	730.5
91	122.4	107.7	844.2	742.9
92	124.3	109.6	856.8	755.4
93	126.1	111.4	869.4	768.1
94	128.0	113.3	882.3	780.9
95	129.8	115.1	895.2	793.9
96	131.7	117.0	908.3	807.0
97	133.7	119.0	921.6	820.2
98	135.6	120.9	935.0	833.6
99	137.6	122.9	948.5	847.2
100	139.6	124.9	962.2	860.9

From +101 to +150 degrees

t,F	Psia	Psig	kPaa	kPag
101	141.6	126.9	976.0	874.7
102	143.6	128.9	990.0	888.7
103	145.6	130.9	1004.1	902.8
104	147.7	133.0	1018.4	917.1
105	149.8	135.1	1032.8	931.5
106	151.9	137.2	1047.4	946.1
107	154.1	139.4	1062.2	960.8
108	156.2	141.5	1077.1	975.7
109	158.4	143.7	1092.1	990.7
110	160.6	145.9	1107.3	1006.0
111	162.8	148.1	1122.7	1021.3
112	165.1	150.4	1138.2	1036.8
113	167.4	152.7	1153.9	1052.5
114	169.7	155.0	1169.7	1068.3
115	172.0	157.3	1185.7	1084.4
116	174.3	159.6	1201.9	1100.5
117	176.7	162.0	1218.2	1116.8
118	179.1	164.4	1234.7	1133.3
119	181.5	166.8	1251.4	1150.0
120	183.9	169.2	1268.2	1166.8
121	186.4	171.7	1285.2	1183.8
122	188.9	174.2	1302.4	1201.0
123	191.4	176.7	1319.7	1218.3
124	193.9	179.2	1337.2	1235.9
125	196.5	181.8	1354.9	1253.5
126	199.1	184.4	1372.8	1271.4
127	201.7	187.0	1390.8	1289.4
128	204.4	189.7	1409.0	1307.7
129	207.0	192.3	1427.4	1326.1
130	209.7	195.0	1446.0	1344.6
131	212.4	197.7	1464.7	1363.4
132	215.2	200.5	1483.7	1382.3
133	218.0	203.3	1502.8	1401.4
134	220.8	206.1	1522.1	1420.8
135	223.6	208.9	1541.6	1440.2
136	226.4	211.7	1561.3	1459.9
137	229.3	214.6	1581.2	1479.8
138	232.2	217.5	1601.2	1499.9
139	235.2	220.5	1621.5	1520.1
140	238.1	223.4	1641.9	1540.6
141	241.1	226.4	1662.5	1561.2
142	244.2	229.5	1683.4	1582.0
143	247.2	232.5	1704.4	1603.1
144	250.3	235.6	1725.6	1624.3
145	253.4	238.7	1747.1	1645.7
146	256.5	241.8	1768.7	1667.4
147	259.7	245.0	1790.5	1689.2
148	262.9	248.2	1812.6	1711.2
149	266.1	251.4	1834.8	1733.5
150	269.4	254.7	1857.3	1755.9

Thermodynamic properties of R1234yf, table

Below are the thermodynamic properties of R1234yf refrigerant. For your convenience, we have divided the table into three parts depending on temperature:

1. -40…0 degrees Celsius;
2. +1…+40 degrees Celsius;
3. +41…+80 degrees Celsius.

In the tables of thermodynamic characteristics of R1234yf freon, the following designations are used:

• T,C – temperature in degrees Celsius;
• P – pressure in bar;
• DL – liquid density in kg/m3 (kilogram per cubic meter);
• DV – steam density in kg/m3 (kilogram per cubic meter);
• EL – enthalpy of liquid in kJ/kg (kilojoule per kilogram);
• EV – steam enthalpy in kJ/kg (kilojoule per kilogram);
• ErL – entropy of liquid in kJ/(kg*K) (kilojoule per kilogram per degree Kelvin);
• ErV – steam entropy in kJ/(kg*K) (kilojoule per kilogram per degree Kelvin).

Thermodynamic properties of R1234yf at temperatures from -40 to 0 degrees

T,C	P	DL	DV	EL	EV	ErL	ErV
-40	0.624	1291.9	3.795	151.07	336.58	0.8074	1.6031
-39	0.655	1289.2	3.97	152.23	337.25	0.8124	1.6025
-38	0.687	1286.5	4.152	153.39	337.93	0.8173	1.602
-37	0.72	1283.8	4.34	154.56	338.6	0.8222	1.6016
-36	0.755	1281	4.535	155.73	339.27	0.8272	1.6011
-35	0.79	1278.3	4,737	156.9	339.95	0.8321	1.6007
-34	0.828	1275.6	4,946	158.08	340.62	0.837	1.6003
-33	0.866	1272.8	5,162	159.26	341.3	0.8419	1.5999
-32	0.906	1270.1	5,386	160.44	341.97	0.8468	1.5996
-31	0.948	1267.3	5.617	161.62	342.65	0.8517	1.5993
-30	0.991	1264.5	5.855	162.81	343.32	0.8566	1,599
-29	1.035	1261.8	6.102	164	344	0.8615	1.5987
-28	1,081	1259	6,357	165.2	344.67	0.8663	1.5984
-27	1.129	1256.2	6.62	166.39	345.34	0.8712	1.5982
-26	1.178	1253.4	6,891	167.6	346.02	0.876	1,598
-25	1.229	1250.5	7,171	168.8	346.69	0.8809	1.5977
-24	1.281	1247.7	7.46	170.01	347.36	0.8857	1.5976
-23	1.336	1244.9	7,758	171.22	348.04	0.8906	1.5974
-22	1,392	1242	8,066	172.43	348.71	0.8954	1.5973
-21	1,449	1239.2	8,383	173.65	349.38	0.9002	1.5971
-20	1,509	1236.3	8,709	174.87	350.05	0.905	1,597
-19	1.571	1233.4	9,046	176.09	350.72	0.9098	1.5969
-18	1.634	1230.5	9,393	177.32	351.39	0.9146	1.5968
-17	1.7	1227.6	9.75	178.55	352.06	0.9194	1.5968
-16	1,768	1224.7	10.12	179.79	352.73	0.9242	1.5967
-15	1.837	1221.8	10.5	181.02	353.4	0.929	1.5967
-14	1,909	1218.8	10.89	182.27	354.06	0.9338	1.5967
-13	1,983	1215.9	11.29	183.51	354.73	0.9385	1.5967
-12	2,059	1212.9	11.7	184.76	355.39	0.9433	1.5967
-11	2.137	1209.9	12.12	186.01	356.06	0.948	1.5967
-10	2.218	1207	12.56	187.26	356.72	0.9528	1.5968
-9	2,301	1203.9	13.01	188.52	357.38	0.9575	1.5968
-8	2,386	1200.9	13.47	189.78	358.04	0.9623	1.5969
-7	2,474	1197.9	13.94	191.05	358.7	0.967	1.5969
-6	2,564	1194.9	14.43	192.31	359.36	0.9717	1,597
-5	2.656	1191.8	14.93	193.59	360.02	0.9765	1.5971
-4	2,751	1188.7	15.45	194.86	360.68	0.9812	1.5973
-3	2,849	1185.6	15.97	196.14	361.33	0.9859	1.5974
-2	2.95	1182.5	16.52	197.42	361.99	0.9906	1.5975
-1	3,053	1179.4	17.07	198.71	362.64	0.9953	1.5977
0	3.158	1176.3	17.65	200	363.29	1	1.5978

Thermodynamic properties of R1234yf at temperatures from +1 to +40 degrees

T,C	P	DL	DV	EL	EV	ErL	ErV
1	3,267	1173.1	18.23	201.29	363.94	1.0047	1,598
2	3,378	1170	18.84	202.59	364.59	1.0094	1.5981
3	3,492	1166.8	19.46	203.89	365.23	1.0141	1.5983
4	3,609	1163.6	20.09	205.2	365.88	1.0187	1.5985
5	3,729	1160.4	20.74	206.5	366.52	1.0234	1.5987
6	3.852	1157.2	21.41	207.82	367.16	1.0281	1.5989
7	3,978	1153.9	22.1	209.13	367.8	1.0328	1.5991
8	4.108	1150.6	22.8	210.45	368.44	1.0374	1.5993
9	4.24	1147.3	23.53	211.78	369.07	1.0421	1.5996
10	4.375	1144	24.27	213.1	369.7	1.0467	1.5998
11	4,514	1140.7	25.03	214.43	370.33	1.0514	1.6
12	4.656	1137.4	25.81	215.77	370.96	1.056	1.6003
13	4,802	1134	26.61	217.11	371.59	1.0607	1.6005
14	4.95	1130.6	27.43	218.45	372.21	1.0653	1.6008
15	5.103	1127.2	28.27	219.8	372.83	1.0699	1.601
16	5,258	1123.8	29.13	221.15	373.45	1.0746	1.6013
17	5.418	1120.3	30.01	222.51	374.06	1.0792	1.6016
18	5.58	1116.9	30.92	223.87	374.67	1.0838	1.6018
19	5,747	1113.4	31.85	225.23	375.28	1.0885	1.6021
20	5,917	1109.9	32.8	226.6	375.89	1.0931	1.6024
21	6,091	1106.3	33.77	227.97	376.49	1.0977	1.6026
22	6,269	1102.8	34.77	229.34	377.09	1.1023	1.6029
23	6,451	1099.2	35.8	230.73	377.69	1.1069	1.6032
24	6,636	1095.5	36.85	232.11	378.28	1.1115	1.6034
25	6,826	1091.9	37.93	233.5	378.87	1.1162	1.6037
26	7,019	1088.2	39.03	234.89	379.45	1.1208	1.604
27	7,217	1084.5	40.16	236.29	380.03	1.1254	1.6043
28	7,419	1080.8	41.32	237.69	380.61	1.13	1.6045
29	7.625	1077.1	42.51	239.1	381.18	1.1346	1.6048
30	7.835	1073.3	43.73	240.51	381.75	1.1392	1.6051
31	8.05	1069.5	44.98	241.93	382.31	1.1438	1.6053
32	8,269	1065.7	46.26	243.35	382.87	1.1484	1.6056
33	8,492	1061.8	47.57	244.78	383.43	1.153	1.6059
34	8.72	1057.9	48.92	246.21	383.98	1.1576	1.6061
35	8,952	1054	50.3	247.64	384.52	1.1622	1.6064
36	9,189	1050	51.72	249.09	385.06	1.1668	1.6066
37	9.431	1046	53.17	250.53	385.6	1.1714	1.6068
38	9,677	1042	54.66	251.98	386.13	1.1759	1.6071
39	9,928	1037.9	56.19	253.44	386.65	1.1805	1.6073
40	10.18	1033.8	57.75	254.9	387.17	1.1851	1.6075

Thermodynamic properties of R1234yf at temperatures from +41 to +80 degrees

T,C	P	DL	DV	EL	EV	ErL	ErV
41	10.45	1029.6	59.36	256.37	387.68	1.1897	1.6077
42	10.71	1025.5	61.01	257.84	388.19	1.1943	1.6079
43	10.98	1021.2	62.7	259.32	388.69	1.1989	1.6081
44	11.26	1017	64.44	260.81	389.18	1.2035	1.6083
45	11.54	1012.6	66.22	262.3	389.66	1.2082	1.6085
46	11.83	1008.3	68.05	263.8	390.14	1.2128	1.6086
47	12.12	1003.9	69.93	265.3	390.61	1.2174	1.6088
48	12.41	999.44	71.86	266.81	391.08	1.222	1.6089
49	12.72	994.94	73.85	268.33	391.53	1.2266	1.6091
50	13.02	990.38	75.88	269.85	391.98	1.2312	1.6092
51	13.34	985.77	77.98	271.38	392.42	1.2359	1.6093
52	13.66	981.1	80.13	272.92	392.85	1.2405	1.6094
53	13.98	976.38	82.34	274.47	393.27	1.2452	1.6094
54	14.31	971.59	84.62	276.02	393.68	1.2498	1.6095
55	14.65	966.73	86.96	277.58	394.08	1.2545	1.6095
56	14.99	961.8	89.37	279.15	394.48	1.2592	1.6095
57	15.34	956.81	91.85	280.73	394.86	1.2638	1.6095
58	15.69	951.73	94.41	282.32	395.23	1.2685	1.6095
59	16.05	946.58	97.04	283.92	395.58	1.2732	1.6094
60	16.42	941.34	99.75	285.53	395.93	1.2779	1.6093
61	16.79	936.02	102.6	287.14	396.26	1.2827	1.6092
62	17.17	930.6	105.4	288.77	396.58	1.2874	1.6091
63	17.56	925.08	108.4	290.41	396.89	1.2922	1.6089
64	17.95	919.46	111.5	292.06	397.18	1.2969	1.6087
65	18.35	913.73	114.7	293.72	397.46	1.3017	1.6085
66	18.75	907.89	118	295.39	397.71	1.3065	1.6082
67	19.17	901.93	121.4	297.08	397.96	1.3114	1.6079
68	19.59	895.83	124.9	298.78	398.18	1.3162	1.6076
69	20.01	889.6	128.5	300.49	398.38	1.3211	1.6072
70	20.45	883.23	132.3	302.22	398.57	1.326	1.6068
71	20.89	876.7	136.3	303.96	398.73	1.3309	1.6063
72	21.33	870.01	140.4	305.72	398.87	1.3359	1.6058
73	21.79	863.15	144.6	307.5	398.98	1.3409	1.6052
74	22.25	856.1	149	309.3	399.07	1.3459	1.6045
75	22.72	848.85	153.7	311.11	399.13	1.351	1.6038
76	23.2	841.38	158.5	312.95	399.16	1.3561	1.603
77	23.69	833.68	163.6	314.81	399.15	1.3612	1.6021
78	24.18	825.73	168.9	316.69	399.11	1.3664	1.6011
79	24.68	817.51	174.5	318.6	399.03	1.3717	1.6001
80	25.19	808.98	180.3	320.54	398.9	1.377	1.5989

Mollier diagram (Log(p)-h diagram) for R1234yf

Compatibility of R1234yf with materials

Below is a table of compatibility between R1234yf and O-ring and gasket materials. For clarity, the following notations are used:

• “+” – fully compatible; 
• “0” – compatible to the point of acceptable;
• “–” – not compatible.

Polypropylene	+
Polystyrene	0
Chlorinated PVC	+
PTFE (Teflon)	0
ETFE (tefzel)	0
Polyvinylidene fluoride	0
Ionomer resin	+
ABS	+
Cellulose material (Ethocel®)	—
Epoxy resins	+
Polyacytamine	+
Polycarbonate	+
Polybutylene terephthalate	+
Polyarylate	+
Polyamide	+
Polysulfide	+
Nitrile butadiene rubber	—
Ethylene propylene rubber	+
Fluoroelastomers	—

Manufacturers R1234yf

• Honeywell.
• Opteon.
• Zhejiang Guomao Industrial Co., Ltd.
• Jinhua Slihe Chemical Co., Limited.

Find more information about refrigerants on the website Freons.Info.