RefProp is developed and maintained by the National Institute of Standard and Technologies and any specific information can be found in the original distribution package.
RefProp is not distributed together with the standard version of FluidProp because RefProp is owned and distributed by the National Institute of Standards and Technologies (NIST). To get access to RefProp via the common FluidProp interface you must own a valid license of RefProp 8 (or later). Once a valid a license has been obtained or if you have already a valid license, you can contact us about how to establish a link between FluidProp and RefProp.
RefProp implements reference equations of state as well as technical equations of state for pure fluids. Reference equations of state are able to describe all experimental thermodynamic property data available for a certain fluid within their experimental uncertainty. Technical equations of state are accurate enough for most technical applications.
Mixture properties can also be calculated using a generalized model described in the RefProp documentation. Mixtures can be composed from the list of available pure fluids. However, mixing of pure fluids is limited.
RefProp (version 9.0) provides thermodynamic and transport properties for the pure fluids listed in Table 1. The listed FluidProp names (either short or long) must be used to specify the fluid name in the SetFluid method. For a given fluid, the FluidProp name is the same in all thermodynamic libraries in which the fluid is available.
Table 1FluidProp Name (short) | FluidProp Name (long) | Tc[°C] | Pc[bar] | Tmin[°C] | Tmax[°C] |
C3H6O |
acetone |
234.95 |
47.00 |
-94.65 |
276.85 |
air |
air |
-140.33 |
38.50 |
-217.44 |
1720.58 |
amarillo |
Amarillo Gas |
-71.06 |
54.25 |
-187.53 |
368.60 |
NH3 |
ammonia |
132.25 |
113.33 |
-77.65 |
426.85 |
Ar |
argon |
-122.46 |
48.63 |
-189.34 |
1726.85 |
C6H6 |
benzene |
288.87 |
49.07 |
5.52 |
451.85 |
C4H10 |
butane |
151.98 |
37.96 |
-138.25 |
301.85 |
C4H8 |
butene |
146.14 |
40.05 |
-185.35 |
251.85 |
CO2 |
carbon dioxide |
30.98 |
73.77 |
-56.56 |
1726.85 |
CO |
carbon monoxide |
-140.29 |
34.94 |
-204.99 |
226.85 |
COS |
carbonyl sulfide |
105.62 |
63.70 |
-138.85 |
376.85 |
c-C4H8 |
cis-butene |
162.60 |
42.26 |
-138.85 |
251.85 |
C6H12 |
cyclohexane |
280.45 |
40.80 |
6.32 |
426.85 |
C3H6 |
cyclopropane |
125.15 |
55.80 |
-0.15 |
199.85 |
C5H10 |
cyclopentane |
238.57 |
45.71 |
-93.45 |
276.85 |
D4 |
D4 |
313.34 |
13.32 |
17.10 |
399.85 |
D5 |
D5 |
346.08 |
11.61 |
26.85 |
399.85 |
D6 |
D6 |
372.63 |
9.61 |
-2.95 |
399.85 |
C10H22 |
decane |
344.55 |
21.03 |
-29.65 |
401.85 |
D2 |
deuterium |
-234.81 |
16.80 |
-254.43 |
326.85 |
C2H5OC2H5 |
diethylether |
193.55 |
36.44 |
-3.15 |
226.85 |
C3H6O3 |
dimethyl carbonate |
283.85 |
49.09 |
3.91 |
326.85 |
CH3OCH3 |
dimethylether |
127.23 |
53.37 |
-141.49 |
251.85 |
C12H26 |
dodecane |
384.95 |
18.17 |
-9.55 |
426.85 |
C6F12O |
Dodecafluoro2methylpentan3one |
168.66 |
18.69 |
-108.15 |
226.85 |
ekofisk |
Ekofisk Gas |
-56.95 |
60.25 |
-185.85 |
374.10 |
C2H6 |
ethane |
32.17 |
48.72 |
-182.78 |
401.85 |
C2H5OH |
ethanol |
241.56 |
62.68 |
-114.15 |
376.85 |
C8H10 |
ethylbenzene |
343.97 |
36.22 |
-94.95 |
426.85 |
C2H4 |
ethylene |
9.20 |
50.42 |
-169.16 |
176.85 |
F2 |
fluorine |
-128.74 |
51.72 |
-219.67 |
26.85 |
R161 |
fluoroethane |
102.10 |
50.10 |
-143.15 |
176.85 |
gulf |
Gulf Coast Gas |
-75.97 |
49.43 |
-186.69 |
358.85 |
D2O |
heavy water |
370.70 |
216.71 |
3.82 |
526.85 |
He |
helium |
-267.95 |
2.28 |
-270.97 |
1726.85 |
C7H16 |
heptane |
266.98 |
27.36 |
-90.60 |
326.85 |
C6H14 |
hexane |
234.67 |
30.34 |
-95.32 |
326.85 |
HighCO2N2 |
High CO2 and Nitrogen Gas |
-65.89 |
58.81 |
-183.56 |
419.87 |
HighN2 |
High Nitrogen Gas |
-79.63 |
55.00 |
-190.59 |
400.05 |
HCl |
hydrochloric acid |
51.40 |
82.63 |
-118.15 |
56.85 |
H2 |
hydrogen |
-240.00 |
12.96 |
-259.19 |
726.85 |
H2S |
hydrogen sulfide |
99.95 |
90.00 |
-85.45 |
486.85 |
i-C4H10 |
isobutane |
134.66 |
36.29 |
-159.42 |
301.85 |
i-C4H8 |
isobutene |
144.94 |
40.10 |
-140.75 |
276.85 |
i-C6H14 |
isohexane |
224.55 |
30.40 |
-153.55 |
276.85 |
i-C8H18 |
isooctane |
270.85 |
25.72 |
-107.38 |
326.85 |
i-C5H12 |
isopentane |
187.20 |
33.78 |
-160.50 |
226.85 |
Kr |
krypton |
-63.67 |
55.25 |
-157.37 |
476.85 |
MD2M |
MD2M |
326.25 |
12.27 |
-67.95 |
399.85 |
MD3M |
MD3M |
355.21 |
9.45 |
-81.15 |
399.85 |
MD4M |
MD4M |
380.05 |
8.77 |
26.85 |
399.85 |
MDM |
MDM |
290.94 |
14.15 |
-85.95 |
399.85 |
CH4 |
methane |
-82.59 |
45.99 |
-182.46 |
351.85 |
CH4O |
methanol |
240.23 |
82.16 |
-97.54 |
346.85 |
C19H34O2 |
methyl linoleate |
525.85 |
13.41 |
-35.05 |
726.85 |
C19H32O2 |
methyl linolenate |
498.85 |
13.69 |
-54.50 |
726.85 |
C19H36O2 |
methyl oleate |
508.85 |
12.46 |
-19.68 |
726.85 |
C17H34O2 |
methyl palmitate |
481.85 |
13.50 |
29.56 |
726.85 |
C19H38O2 |
methyl stearete |
501.85 |
12.39 |
38.69 |
726.85 |
C7H14 |
methylcyclohexane |
299.05 |
34.70 |
-126.45 |
326.85 |
MM |
MM |
245.55 |
19.39 |
-0.15 |
399.85 |
C8H10 |
m-xylene |
343.97 |
36.22 |
-94.95 |
426.85 |
Ne |
neon |
-228.66 |
26.79 |
-248.59 |
426.85 |
neo-C5H12 |
neopentane |
160.59 |
31.96 |
-16.55 |
276.85 |
N2 |
nitrogen |
-146.96 |
33.96 |
-210.00 |
1726.85 |
NF3 |
nitrogen trifluoride |
-39.15 |
44.61 |
-188.15 |
226.85 |
N2O |
nitrous oxide |
36.37 |
72.45 |
-90.82 |
251.85 |
C9H20 |
nonane |
321.40 |
22.81 |
-53.45 |
326.85 |
C8H18 |
octane |
296.17 |
24.97 |
-56.78 |
326.85 |
o-H2 |
orthohydrogen |
-239.93 |
13.11 |
-259.14 |
726.85 |
O2 |
oxygen |
-118.57 |
50.43 |
-218.79 |
1726.85 |
C8H10 |
o-xylene |
343.97 |
36.22 |
-94.95 |
426.85 |
p-H2 |
parahydrogen |
-240.21 |
12.86 |
-259.35 |
726.85 |
C5H12 |
pentane |
196.55 |
33.70 |
-129.68 |
326.85 |
C4F10 |
perfluoro butane |
113.18 |
23.23 |
-84.15 |
226.85 |
C5F12 |
perfluoro pentane |
147.41 |
20.45 |
-124.79 |
226.85 |
C3H8 |
propane |
96.74 |
42.51 |
-187.62 |
376.85 |
C9H18 |
propylcyclohexane |
357.65 |
28.60 |
-94.95 |
376.85 |
C3H6 |
propylene |
125.15 |
55.80 |
-0.15 |
199.85 |
C3H4 |
propyne |
129.23 |
56.26 |
-0.15 |
200.85 |
C8H10 |
p-xylene |
343.97 |
36.22 |
-94.95 |
426.85 |
R11 |
R11 |
197.96 |
44.08 |
-110.47 |
351.85 |
R113 |
R113 |
214.06 |
33.92 |
-36.22 |
251.85 |
R114 |
R114 |
145.68 |
32.57 |
0.00 |
233.85 |
R115 |
R115 |
79.95 |
31.29 |
-99.40 |
276.85 |
R116 |
R116 |
19.88 |
30.48 |
-100.05 |
151.85 |
R12 |
R12 |
111.97 |
41.36 |
-157.05 |
251.85 |
R1216 |
R1216 |
85.75 |
31.50 |
-155.50 |
126.85 |
R123 |
R123 |
183.68 |
36.62 |
-107.15 |
326.85 |
R1233ZD |
R1233zd |
165.60 |
35.73 |
-78.00 |
276.85 |
R1234YF |
R1234yf |
94.70 |
33.82 |
-53.15 |
136.85 |
R1234ZE |
R1234ze |
109.36 |
36.35 |
-104.53 |
146.85 |
R124 |
R124 |
122.28 |
36.24 |
-153.15 |
196.85 |
R125 |
R125 |
66.02 |
36.18 |
-100.63 |
226.85 |
R13 |
R13 |
28.85 |
38.79 |
-181.15 |
129.85 |
R134a |
R134a |
101.06 |
40.59 |
-103.30 |
181.85 |
R14 |
R14 |
-45.64 |
37.50 |
-153.15 |
349.85 |
R141b |
R141b |
204.35 |
42.12 |
-103.47 |
226.85 |
R142b |
R142b |
137.11 |
40.55 |
-130.43 |
196.85 |
R143a |
R143a |
72.71 |
37.61 |
-111.81 |
376.85 |
R152a |
R152a |
113.26 |
45.17 |
-118.59 |
226.85 |
R21 |
R21 |
178.33 |
51.81 |
-73.15 |
199.85 |
R218 |
R218 |
71.87 |
26.40 |
-147.70 |
166.85 |
R22 |
R22 |
96.15 |
49.90 |
-157.42 |
276.85 |
R227ea |
R227ea |
101.75 |
29.25 |
-126.80 |
201.85 |
R23 |
R23 |
26.14 |
48.32 |
-155.13 |
201.85 |
R236ea |
R236ea |
139.29 |
34.20 |
-33.15 |
138.85 |
R236fa |
R236fa |
124.92 |
32.00 |
-93.55 |
126.85 |
R245ca |
R245ca |
174.42 |
39.41 |
-81.65 |
176.85 |
R245fa |
R245fa |
154.01 |
36.51 |
-102.10 |
166.85 |
R32 |
R32 |
78.11 |
57.82 |
-136.81 |
161.85 |
C4H5F5 |
R365mfc |
186.85 |
32.66 |
-34.15 |
226.85 |
C4F8 |
RC318 |
115.23 |
27.77 |
-39.80 |
349.85 |
C2H3F3O |
RE143a |
104.77 |
36.35 |
-33.15 |
146.85 |
C3H3F5O |
RE245cb2 |
133.66 |
28.86 |
-23.15 |
226.85 |
C3H3F5O |
RE245fa2 |
133.66 |
28.86 |
-23.15 |
226.85 |
C4H3F7O |
RE347mcc |
164.55 |
24.76 |
-23.15 |
226.85 |
SO2 |
sulfur dioxide |
157.49 |
78.84 |
-75.45 |
251.85 |
SF6 |
sulfur hexafluoride |
45.57 |
37.55 |
-49.59 |
351.85 |
C7H8 |
toluene |
318.60 |
41.26 |
-95.15 |
426.85 |
t-C4H8 |
trans-butene |
155.46 |
40.27 |
-105.55 |
251.85 |
CF3I |
trifluoroiodomethane |
123.29 |
39.53 |
-153.15 |
146.85 |
C11H24 |
undecane |
365.65 |
19.90 |
-25.61 |
426.85 |
H2O |
water |
373.95 |
220.64 |
-21.98 |
1726.85 |
Xe |
xenon |
16.58 |
58.42 |
-111.74 |
476.85 |
Product Name |
Components | FluidProp Name (short and long) | MW [g/mol] | Tc[°C] | Pc[bar] | Tmin[°C] | Tmax[°C] |
AIR | NITROGEN/ ARGON/ OXYGEN | AIR | 28.9586 | -140.33 | 38.50 | -217.44 | 1720.58 |
AMARILLO | METHANE/ NITROGEN/ CO2/ ETHANE/ PROPANE/ ISOBUTAN/ BUTANE/ IPENTANE/ PENTANE/ HEXANE | AMARILLO | 17.5953 | -71.06 | 54.25 | -187.53 | 368.60 |
EKOFISK | METHANE/ NITROGEN/ CO2/ ETHANE/ PROPANE/ ISOBUTAN/ BUTANE/ IPENTANE/ PENTANE | EKOFISK | 18.7680 | -56.95 | 60.25 | -185.85 | 374.10 |
GLFCOAST | METHANE/ NITROGEN/ CO2/ ETHANE/ PROPANE/ ISOBUTAN/ BUTANE/ IPENTANE/ PENTANE/ HEXANE | GLFCOAST | 16.7992 | -75.97 | 49.43 | -186.69 | 358.85 |
HIGHCO2 | METHANE/ NITROGEN/ CO2/ ETHANE/ PROPANE/ ISOBUTAN/ BUTANE | HIGHCO2 | 19.8288 | -65.89 | 58.81 | -183.56 | 419.87 |
HIGHN2 | METHANE/ NITROGEN/ CO2/ ETHANE/ PROPANE/ ISOBUTAN/ BUTANE | HIGHN2 | 18.6486 | -79.63 | 55.00 | -190.59 | 400.05 |
R401A | R22/ R152A/ R124 | R401A | 94.4384 | 107.34 | 46.08 | -155.18 | 246.70 |
R401B | R22/ R152A/ R124 | R401B | 92.8361 | 105.57 | 46.86 | -156.39 | 252.16 |
R401C | R22/ R152A/ R124 | R401C | 101.0342 | 111.73 | 43.73 | -153.27 | 231.67 |
R402A | R125/ PROPANE/ R22 | R402A | 101.5501 | 75.81 | 42.19 | -145.50 | 245.64 |
R402B | R125/ PROPANE/ R22 | R402B | 94.7091 | 82.89 | 45.16 | -154.60 | 257.22 |
R403A | PROPANE/ R22/ R218 | R403A | 91.9849 | 86.96 | 47.04 | -168.91 | 257.94 |
R403B | PROPANE/ R22/ R218 | R403B | 103.2574 | 79.66 | 43.29 | -170.22 | 236.70 |
R404A | R125/ R134A/ R143A | R404A | 97.6038 | 72.04 | 37.29 | -112.09 | 307.50 |
R405A | R22/ R152A/ R142B/ RC318 | R405A | 111.9083 | 106.14 | 42.85 | -140.07 | 276.98 |
R406A | R22/ ISOBUTAN/ R142B | R406A | 89.8574 | 116.84 | 48.55 | -153.88 | 242.03 |
R407A | R32/ R125/ R134A | R407A | 90.1107 | 82.26 | 45.15 | -119.09 | 191.55 |
R407B | R32/ R125/ R134A | R407B | 102.9373 | 74.97 | 41.30 | -113.09 | 207.54 |
R407C | R32/ R125/ R134A | R407C | 86.2036 | 86.03 | 46.29 | -120.76 | 185.13 |
R407D | R32/ R125/ R134A | R407D | 90.9616 | 91.37 | 44.68 | -117.06 | 183.55 |
R407E | R32/ R125/ R134A | R407E | 83.7818 | 88.46 | 47.02 | -121.80 | 181.18 |
R408A | R125/ R143A/ R22 | R408A | 87.0149 | 83.14 | 42.95 | -142.75 | 315.03 |
R409A | R22/ R124/ R142B | R409A | 97.4333 | 109.27 | 46.99 | -157.96 | 246.96 |
R409B | R22/ R124/ R142B | R409B | 96.6731 | 106.93 | 47.35 | -159.22 | 251.30 |
R410A | R32/ R125 | R410A | 72.5854 | 71.34 | 49.01 | -130.26 | 187.15 |
R410B | R32/ R125 | R410B | 75.5723 | 70.81 | 48.12 | -128.62 | 190.46 |
R411A | PROPYLEN/ R22/ R152A | R411A | 82.3642 | 99.10 | 49.52 | -158.96 | 271.07 |
R411B | PROPYLEN/ R22/ R152A | R411B | 83.0689 | 95.92 | 49.44 | -163.56 | 275.32 |
R412A | R22/ R218/ R142B | R412A | 92.1736 | 107.19 | 49.06 | -156.82 | 250.23 |
R413A | R218/ R134A/ ISOBUTAN | R413A | 103.9547 | 96.55 | 40.19 | -118.59 | 178.35 |
R414A | R22/ R124/ ISOBUTAN/ R142B | R414A | 96.9320 | 112.68 | 46.79 | -158.46 | 242.19 |
R414B | R22/ R124/ ISOBUTAN/ R142B | R414B | 101.5894 | 111.00 | 45.92 | -159.13 | 240.97 |
R415A | R22/ R152A | R415A | 81.9105 | 101.97 | 49.59 | -154.57 | 267.53 |
R415B | R22/ R152A | R415B | 70.1946 | 111.37 | 46.54 | -132.35 | 238.58 |
R416A | R134A/ R124/ BUTANE | R416A | 111.9209 | 107.09 | 39.76 | -131.65 | 185.11 |
R417A | R125/ R134A/ BUTANE | R417A | 106.7459 | 87.13 | 40.35 | -112.78 | 199.26 |
R418A | PROPANE/ R22/ R152A | R418A | 84.5949 | 96.21 | 49.82 | -162.89 | 276.18 |
R419A | R125/ R134A/ DME | R419A | 109.3379 | 82.12 | 39.43 | -110.56 | 222.43 |
R420A | R134A/ R142B | R420A | 101.8451 | 104.76 | 40.86 | -112.97 | 182.34 |
R421A | R125/ R134A | R421A | 111.7465 | 82.78 | 39.19 | -106.99 | 203.84 |
R421B | R125/ R134A | R421B | 116.9290 | 72.41 | 37.49 | -106.16 | 217.71 |
R422A | R125/ R134A/ ISOBUTAN | R422A | 113.6044 | 71.71 | 37.45 | -114.88 | 218.41 |
R422B | R125/ R134A/ ISOBUTAN | R422B | 108.5184 | 83.21 | 39.58 | -114.27 | 202.95 |
R422C | R125/ R134A/ ISOBUTAN | R422C | 113.3993 | 73.06 | 37.75 | -113.98 | 216.53 |
R422D | R125/ R134A/ ISOBUTAN | R422D | 109.9351 | 79.57 | 39.05 | -115.06 | 207.82 |
R423A | R134A/ R227EA | R423A | 125.9591 | 99.14 | 35.63 | -118.45 | 185.66 |
R424A | R125/ R134A/ ISOBUTAN/ BUTANE/ IPENTANE | R424A | 108.4124 | 85.89 | 40.03 | -112.34 | 200.18 |
R425A | R32/ R134A/ R227EA | R425A | 90.3065 | 93.89 | 45.01 | -121.54 | 177.33 |
R426A | R125/ R134A/ BUTANE/ IPENTANE | R426A | 101.5585 | 99.89 | 40.92 | -111.39 | 183.13 |
R427A | R32/ R125/ R143A/ R134A | R427A | 90.4440 | 85.32 | 43.92 | -117.84 | 201.24 |
R428A | R125/ R143A/ PROPANE/ ISOBUTAN | R428A | 107.5276 | 69.00 | 37.25 | -115.78 | 260.02 |
R435A | DME/ R152A | R435A | 49.0354 | 125.15 | 53.84 | -144.38 | 245.16 |
R436A | PROPANE/ ISOBUTAN | R436A | 49.3342 | 115.88 | 42.73 | -183.09 | 346.22 |
R436B | PROPANE/ ISOBUTAN | R436B | 49.8728 | 117.42 | 42.50 | -182.06 | 343.22 |
R437A | R125/ R134A/ BUTANE/ PENTANE | R437A | 103.7085 | 96.27 | 40.87 | -110.62 | 189.20 |
R500 | R12/ R152A | R500 | 99.3030 | 102.09 | 41.68 | -152.94 | 227.57 |
R501 | R22/ R12 | R501 | 93.0983 | 95.87 | 47.61 | -163.44 | 266.53 |
R502 | R22/ R115 | R502 | 111.6278 | 81.51 | 40.17 | -149.97 | 262.85 |
R503 | R23/ R13 | R503 | 87.2467 | 18.43 | 42.81 | -178.17 | 148.57 |
R504 | R32/ R115 | R504 | 79.2491 | 62.09 | 44.24 | -140.24 | 166.09 |
R507A | R125/ R143A | R507A | 98.8592 | 70.62 | 37.05 | -111.79 | 308.37 |
R508A | R23/ R116 | R508A | 100.0977 | 10.19 | 36.51 | -147.21 | 158.36 |
R508B | R23/ R116 | R508B | 95.3940 | 11.20 | 37.72 | -150.14 | 162.79 |
R509A | R22/ R218 | R509A | 123.9617 | 68.48 | 36.02 | -165.41 | 205.63 |
R510A | DME/ ISOBUTAN | R510A | 47.2442 | 125.67 | 51.18 | -149.27 | 253.32 |