RefrigerantASHRAE R-236fa

R236fa PT Chart

Updated October 12, 2026

R-236fa

A1 Lower toxicity, no flame propagationHFC (pure) AIM Act HFC

Illustration of a refrigerant cylinder painted light green gray (RAL 7044), the color AHRI Guideline N-2017 calls for on all new refrigerant containers from 2020^{[1], section 4.8}. Label: R-236fa, safety class A1, GWP 9,810. No red band: AHRI Guideline N-2017 reserves it for flammable refrigerants^{[1], section 4.7}.

CF3CH2CF3

Pure HFC, 1,1,1,3,3,3-hexafluoropropane (CF₃CH₂CF₃). Branded as Chemours FE-36. ASHRAE A1 non-flammable. GWP 9,810 — extremely high for an HFC, driven by 242-year atmospheric lifetime. Primary use: clean-agent fire suppression in portable extinguishers and total-flooding systems. Limited refrigeration use.

R-236fa saturation pressure is 4.0 PSIG at 40°F, 19.9 PSIG at 70°F, and 44.5 PSIG at 100°F. These are the gauge readings on a static, fully-saturated system; a running system's high side sits well above them. The full table below runs from −40°F to 150°F in 1°F steps.

Not yet checked against an independent source.

Saturation @ 70°F

19.9 PSIG

GWP (100-yr)

9,810 AIM Act exchange value (IPCC AR4)

Boiling point

29.3°F

R-236fa PT calculator Superheat

R-236fa PT chart — printable saturation table

Looking for the R-236fa PT chart PDF for shop reference? The complete pressure-temperature saturation table is below: every 1° increment from −40°F to 150°F (or to the refrigerant's critical temperature). Use the Print / Save as PDF button in the table header to download a clean, table-only PDF (the rest of the page is hidden from the print output).

R-236fa PT Chart — Pressure-Temperature Saturation Table

Computed with CoolProp 7.2.0 in 1°F steps · hvacptcharts.com

R-236fa · 1° increments · °F / PSIG

Tinted rows: NBP atmospheric crossover · 32°F H₂O freeze

R-236fa pressure-temperature saturation table in Fahrenheit and PSIG
Temp (°F)	Pressure (PSIG)
−40°F	25.6 in. Hg vac.
−39°F	25.4 in. Hg vac.
−38°F	25.3 in. Hg vac.
−37°F	25.1 in. Hg vac.
−36°F	25.0 in. Hg vac.
−35°F	24.8 in. Hg vac.
−34°F	24.6 in. Hg vac.
−33°F	24.5 in. Hg vac.
−32°F	24.3 in. Hg vac.
−31°F	24.1 in. Hg vac.
−30°F	23.9 in. Hg vac.
−29°F	23.7 in. Hg vac.
−28°F	23.5 in. Hg vac.
−27°F	23.3 in. Hg vac.
−26°F	23.1 in. Hg vac.
−25°F	22.9 in. Hg vac.
−24°F	22.7 in. Hg vac.
−23°F	22.5 in. Hg vac.
−22°F	22.2 in. Hg vac.
−21°F	22.0 in. Hg vac.
−20°F	21.8 in. Hg vac.
−19°F	21.5 in. Hg vac.
−18°F	21.3 in. Hg vac.
−17°F	21.0 in. Hg vac.
−16°F	20.7 in. Hg vac.
−15°F	20.5 in. Hg vac.
−14°F	20.2 in. Hg vac.
−13°F	19.9 in. Hg vac.
−12°F	19.6 in. Hg vac.
−11°F	19.3 in. Hg vac.
−10°F	19.0 in. Hg vac.
−9°F	18.7 in. Hg vac.
−8°F	18.4 in. Hg vac.
−7°F	18.0 in. Hg vac.
−6°F	17.7 in. Hg vac.
−5°F	17.4 in. Hg vac.
−4°F	17.0 in. Hg vac.
−3°F	16.6 in. Hg vac.
−2°F	16.3 in. Hg vac.
−1°F	15.9 in. Hg vac.
0°F	15.5 in. Hg vac.
1°F	15.1 in. Hg vac.
2°F	14.7 in. Hg vac.
3°F	14.3 in. Hg vac.
4°F	13.9 in. Hg vac.
5°F	13.5 in. Hg vac.
6°F	13.0 in. Hg vac.
7°F	12.6 in. Hg vac.
8°F	12.1 in. Hg vac.
9°F	11.7 in. Hg vac.
10°F	11.2 in. Hg vac.
11°F	10.7 in. Hg vac.
12°F	10.2 in. Hg vac.
13°F	9.7 in. Hg vac.
14°F	9.2 in. Hg vac.
15°F	8.7 in. Hg vac.
16°F	8.2 in. Hg vac.
17°F	7.6 in. Hg vac.
18°F	7.1 in. Hg vac.
19°F	6.5 in. Hg vac.
20°F	5.9 in. Hg vac.
21°F	5.3 in. Hg vac.
22°F	4.7 in. Hg vac.
23°F	4.1 in. Hg vac.
24°F	3.5 in. Hg vac.
25°F	2.9 in. Hg vac.
26°F	2.2 in. Hg vac.
27°F	1.6 in. Hg vac.
28°F	0.9 in. Hg vac.
29°F NBP (atmospheric)	0.2 in. Hg vac.
30°F	0.2
31°F	0.6
32°F H₂O freeze	0.9
33°F	1.3
34°F	1.7
35°F	2.0
36°F	2.4
37°F	2.8
38°F	3.2
39°F	3.6
40°F	4.0
41°F	4.4
42°F	4.8
43°F	5.3
44°F	5.7
45°F	6.1
46°F	6.6
47°F	7.0
48°F	7.5
49°F	8.0
50°F	8.5
51°F	9.0
52°F	9.5
53°F	10.0
54°F	10.5
55°F	11.0
56°F	11.5
57°F	12.1
58°F	12.6
59°F	13.2
60°F	13.7
61°F	14.3
62°F	14.9
63°F	15.5
64°F	16.1
65°F	16.7
66°F	17.3
67°F	17.9
68°F	18.6
69°F	19.2
70°F	19.9
71°F	20.5
72°F	21.2
73°F	21.9
74°F	22.6
75°F	23.3
76°F	24.0
77°F	24.7
78°F	25.5
79°F	26.2
80°F	27.0
81°F	27.8
82°F	28.5
83°F	29.3
84°F	30.1
85°F	30.9
86°F	31.8
87°F	32.6
88°F	33.5
89°F	34.3
90°F	35.2
91°F	36.1
92°F	37.0
93°F	37.9
94°F	38.8
95°F	39.7
96°F	40.7
97°F	41.6
98°F	42.6
99°F	43.6
100°F	44.5
101°F	45.6
102°F	46.6
103°F	47.6
104°F	48.6
105°F	49.7
106°F	50.8
107°F	51.9
108°F	53.0
109°F	54.1
110°F	55.2
111°F	56.3
112°F	57.5
113°F	58.7
114°F	59.8
115°F	61.0
116°F	62.2
117°F	63.5
118°F	64.7
119°F	66.0
120°F	67.2
121°F	68.5
122°F	69.8
123°F	71.1
124°F	72.5
125°F	73.8
126°F	75.2
127°F	76.6
128°F	78.0
129°F	79.4
130°F	80.8
131°F	82.2
132°F	83.7
133°F	85.2
134°F	86.7
135°F	88.2
136°F	89.7
137°F	91.2
138°F	92.8
139°F	94.4
140°F	96.0
141°F	97.6
142°F	99.2
143°F	100.9
144°F	102.5
145°F	104.2
146°F	105.9
147°F	107.6
148°F	109.4
149°F	111.1
150°F	112.9

R-236fa pressure-temperature saturation table in Celsius and kPa
Temp (°C)	Pressure (kPa)
−40°C	−87
−39°C	−86
−38°C	−85
−37°C	−84
−36°C	−83
−35°C	−82
−34°C	−80
−33°C	−79
−32°C	−78
−31°C	−77
−30°C	−75
−29°C	−74
−28°C	−72
−27°C	−71
−26°C	−69
−25°C	−67
−24°C	−66
−23°C	−64
−22°C	−62
−21°C	−60
−20°C	−58
−19°C	−55
−18°C	−53
−17°C	−51
−16°C	−48
−15°C	−46
−14°C	−43
−13°C	−40
−12°C	−37
−11°C	−34
−10°C	−31
−9°C	−28
−8°C	−25
−7°C	−21
−6°C	−18
−5°C	−14
−4°C	−10
−3°C	−6
−2°C NBP (atmospheric)	−2
−1°C	2
0°C H₂O freeze	6
1°C	11
2°C	16
3°C	20
4°C	25
5°C	30
6°C	36
7°C	41
8°C	47
9°C	52
10°C	58
11°C	65
12°C	71
13°C	77
14°C	84
15°C	91
16°C	98
17°C	105
18°C	113
19°C	120
20°C	128
21°C	136
22°C	144
23°C	153
24°C	162
25°C	171
26°C	180
27°C	189
28°C	199
29°C	209
30°C	219
31°C	229
32°C	240
33°C	251
34°C	262
35°C	274
36°C	286
37°C	298
38°C	310
39°C	322
40°C	335
41°C	349
42°C	362
43°C	376
44°C	390
45°C	404
46°C	419
47°C	434
48°C	450
49°C	465
50°C	481
51°C	498
52°C	515
53°C	532
54°C	549
55°C	567
56°C	585
57°C	604
58°C	623
59°C	642
60°C	662
61°C	682
62°C	702
63°C	723
64°C	745
65°C	766
66°C	788

CoolProp 7.2.0 · PSIG/kPa = gauge · PSIA = PSIG + 14.6959 · kPa(abs) = kPa(gauge) + 101.325

Full saturation values at 1° increments. Toggle between °F / PSIG and °C / kPa. Use Print / Save as PDF for laminated shop reference, or download the CSV / JSON below for use in other tools. R-236fa PT chart data: CoolProp 7.2.0 (published Helmholtz equations of state / mixture models — see the source citations above).

Lower toxicity, no flame propagation

Lower toxicity (Occupational Exposure Limit ≥ 400 ppm). No flame propagation in air at standard atmospheric pressure and 60°C. R-134a, R-22, R-410A, R-404A, R-744 (CO2) are A1.

Flammability: None (no flame propagation)
Toxicity: Lower (OEL ≥ 400 ppm)

Classification per ANSI/ASHRAE Standard 34-2022. See full reference.

Saturation pressure-temperature curve

Pressure

Temperature

Highlight at°F

Quick lookup — R-236fa

Temp:°F

19.9PSIG(137 kPa)

Range: −40 to 150°F Open full PT calculator →

Common service temperatures

32°F

1PSIG

Freezing

45°F

6PSIG

Heat-pump heat

70°F

20PSIG

Standard

75°F

23PSIG

Test ref

80°F

27PSIG

Warm

95°F

40PSIG

Summer peak

Saturation values from CoolProp 7.2.0^[3]. Operating pressure on a running system differs — see the operating-pressure references for in-use values.

At a glance

Chemistry

CF3CH2CF3

1,1,1,3,3,3-Hexafluoropropane

Lubricant compatibility

POEMO

Primarily a fire suppression agent (FE-36). Limited refrigeration use due to high GWP.

Trade names

FE-36 — Chemours (fire suppression)

Common applications

Fire suppression (FE-36, total flooding systems)
Specialty refrigeration

Properties

Boiling point (1 atm)
29.3°F (−1.5°C)
Critical point
256.9°F (124.9°C) at 449 PSIG
Molar mass
152.04 g/mol
ODP
0
GWP (100-yr)
9,810 AIM Act exchange value (IPCC AR4) IPCC: AR4 9,810 · AR5 8,060 · AR6 8,690
Atmospheric lifetime
242 years
New-equipment status (US)
Restricted in 41 new-equipment categories — US new-equipment rules (40 CFR 84.54).

What is R-236fa?

R-236fa is the "fa" isomer of hexafluoropropane (CF₃-CH₂-CF₃). It shares its chemical formula with R-236ea but has a fundamentally different atmospheric profile: the -CH₂- group between two -CF₃ groups makes the central C-H bonds inert to OH-radical attack, giving R-236fa a 242-year atmospheric lifetime versus R-236ea's 11 years. The result is GWP 9,810 — one of the highest among commercial HFCs, approaching PFC territory.

Despite the extreme GWP, R-236fa has a useful commercial role as a clean-agent fire suppressant (Chemours FE-36, replacing the banned Halon 1211 in portable extinguishers).

Where R-236fa is used

Clean-agent fire suppression — Chemours FE-36 (Halon 1211 replacement, portable extinguishers, some total-flooding systems)
Specialty refrigeration in some industrial applications
Solvent applications in some precision-cleaning contexts
Not used in conventional HVAC

Regulatory & phase-down status

R-236fa's GWP of 9,810 places it well within AIM Act phase-down scope. However, fire-suppression applications are regulated differently from refrigeration applications — the urgency of fire protection often justifies continued use of high-GWP agents where alternatives are not yet available or proven.

For new fire-suppression installations, lower-GWP alternatives are being developed and deployed: FK-5-1-12 (Novec 1230, a fluorinated ketone with very short atmospheric lifetime), water mist systems, inert gas systems (Inergen, Argonite). R-236fa retains use in applications where its specific properties (clean discharge, very low corrosivity, electrical non-conductivity) are difficult to replace.

Service notes

POE oil is the standard lubricant for refrigeration applications. Mineral oil is not used. Fire-suppression applications don't use lubricant — the agent is stored in pressurized cylinders without separation.

EPA Section 608 covers R-236fa for refrigeration applications. Fire-suppression handling is governed by NFPA standards (NFPA 2001 for clean-agent systems) and local fire-protection regulations. The very high GWP makes recovery especially important — venting is both regulatory non-compliance and significant climate impact per pound.

Operating cycle

Phase-down timeline

R-236fa is a regulated substance under the AIM Act. Its GWP under 40 CFR 84.64 is 9,810, at or above the limit in 41 of the categories 40 CFR 84.54 restricts (listed under “All 84.54 categories restricting R-236fa”).

HFC production & consumption allowances step down to 30% of baseline in 2029–2033, 20% of baseline in 2034–2035, and 15% of baseline in 2036 and later (42 U.S.C. 7675(e)(2)(C)).

Full 40 CFR 84.54 new-equipment rules for R-236fa →

US new-equipment rules (40 CFR 84.54)

R-236fa is a regulated substance under the AIM Act. Under 40 CFR 84.64(a) its GWP is 9,810, the AIM Act exchange value. That value is compared against each 40 CFR 84.54 subsector limit below.

All 84.54 categories restricting R-236fa (41)

Refrigeration, air conditioning & heat pumps (34)
January 1, 2025	Self-contained residential & light-commercial AC and heat pump products	GWP ≥ 700	(a)(1)
January 1, 2025	Chillers for comfort cooling	GWP ≥ 700	(a)(10)(i)
January 1, 2025	Chillers for ice rinks	GWP ≥ 700	(a)(10)(ii)
January 1, 2025	Residential dehumidifiers	GWP ≥ 700	(a)(2)
January 1, 2025	Household refrigerators and freezers	GWP ≥ 150	(a)(3)
January 1, 2025	Retail food refrigeration — stand-alone units	GWP ≥ 150	(a)(4)
January 1, 2025	Vending machines	GWP ≥ 150	(a)(5)
January 1, 2025	Residential & light-commercial AC and heat pump systems (except VRF)	GWP ≥ 700	(c)(1)
January 1, 2025	Chillers for comfort cooling	GWP ≥ 700	(c)(3)
January 1, 2025	Ice rinks	GWP ≥ 700	(c)(4)
January 1, 2026	Chillers for industrial process refrigeration, fluid exiting the chiller warmer than −22°F (−30°C)	GWP ≥ 700	(a)(10)(iii)
January 1, 2026	Industrial process refrigeration products (non-chiller), charge 200 lb or greater, refrigerant entering the evaporator warmer than −22°F (−30°C)	GWP ≥ 150	(a)(12)(i)
January 1, 2026	Industrial process refrigeration products (non-chiller), charge less than 200 lb, refrigerant entering the evaporator warmer than −22°F (−30°C)	GWP ≥ 300	(a)(12)(ii)
January 1, 2026	Ice makers — batch type up to 1,000 lb of ice per 24 h and continuous type up to 1,200 lb per 24 h	GWP ≥ 150	(a)(8)(i)
January 1, 2026	Industrial process refrigeration systems (non-chiller), charge 200 lb or greater, evaporator inlet warmer than −22°F (−30°C), not the high-temperature side of a cascade	GWP ≥ 150	(c)(10)(i)
January 1, 2026	Industrial process refrigeration systems (non-chiller), charge less than 200 lb, evaporator inlet warmer than −22°F (−30°C)	GWP ≥ 300	(c)(10)(ii)
January 1, 2026	Industrial process refrigeration — high-temperature side of cascade systems, evaporator inlet warmer than −22°F (−30°C)	GWP ≥ 300	(c)(10)(iii)
January 1, 2026	Variable refrigerant flow (VRF) residential & light-commercial AC and heat pump systems	GWP ≥ 700	(c)(2)
January 1, 2026	Chillers for industrial process refrigeration, fluid exiting the chiller warmer than −22°F (−30°C)	GWP ≥ 700	(c)(5)(i)
July 27, 2026	Refrigerated transport — intermodal containers with a box temperature of −31°F (−35°C) or higher	GWP ≥ 700	(a)(6)
July 27, 2026	Retail food refrigeration — remote condensing units	GWP ≥ 1,400	(c)(11)(i)
July 27, 2026	Refrigerated transport — intermodal containers with a box temperature of −31°F (−35°C) or higher	GWP ≥ 700	(c)(7)
July 27, 2026	Cold storage warehouse systems	GWP ≥ 700	(c)(9)(i)
January 1, 2027	Self-contained products in data center, information technology equipment facility, and computer room cooling	GWP ≥ 700	(a)(11)
January 1, 2027	Refrigerated food processing and dispensing products outside the scope of UL 621, charge 500 g or less	GWP ≥ 150	(a)(9)(i)
January 1, 2027	Supermarket systems	GWP ≥ 1,400	(c)(12)(i)
January 1, 2027	Data center, information technology equipment facility, and computer room cooling systems	GWP ≥ 700	(c)(13)
January 1, 2028	Chillers for industrial process refrigeration, fluid exiting the chiller from −58°F to −22°F (−50°C to −30°C)	GWP ≥ 700	(a)(10)(iv)
January 1, 2028	Industrial process refrigeration products (non-chiller), refrigerant entering the evaporator from −58°F to −22°F (−50°C to −30°C)	GWP ≥ 700	(a)(12)(iii)
January 1, 2028	Industrial process refrigeration systems (non-chiller), evaporator inlet from −58°F to −22°F (−50°C to −30°C)	GWP ≥ 700	(c)(10)(iv)
January 1, 2028	Chillers for industrial process refrigeration, fluid exiting the chiller from −58°F to −22°F (−50°C to −30°C)	GWP ≥ 700	(c)(6)(i)
January 1, 2032	Retail food refrigeration — remote condensing units	GWP ≥ 150 (200 lb or greater, not the cascade high side); GWP ≥ 300 (less than 200 lb); GWP ≥ 300 (cascade high side)	(c)(11)(ii)
January 1, 2032	Supermarket systems	GWP ≥ 150 (200 lb or greater, not the cascade high side); GWP ≥ 300 (less than 200 lb); GWP ≥ 300 (cascade high side)	(c)(12)(ii)
January 1, 2032	Cold storage warehouse systems	GWP ≥ 150 (200 lb or greater, not the cascade high side); GWP ≥ 300 (less than 200 lb); GWP ≥ 300 (cascade high side)	(c)(9)(ii)
Motor vehicle air conditioning (3)
October 24, 2024	Motor vehicle air-conditioning in Model Year 2025 and later light-duty passenger cars and trucks (gross vehicle weight rating under 8,500 lb)	GWP ≥ 150	(a)(13)(i)
Model Year 2028	Motor vehicle air-conditioning in medium-duty passenger vehicles, heavy-duty pickup trucks and complete heavy-duty vans whose air-conditioning will not be modified by upfitters	GWP ≥ 150	(a)(13)(ii)
January 1, 2028	Motor vehicle air-conditioning in certain nonroad vehicles (agricultural tractors over 40 horsepower; self-propelled agricultural machinery; compact equipment; construction, forestry and mining equipment; and commercial utility vehicles)	GWP ≥ 150	(a)(13)(iii)
Foam blowing agents (2)
January 1, 2025	Foam products: rigid polyurethane appliance foam, commercial refrigeration foam, laminated boardstock, marine flotation foam, sandwich panels, slabstock; flexible polyurethane; integral skin polyurethane; polystyrene (extruded boardstock, billet, extruded sheet); phenolic insulation board and bunstock; polyisocyanurate laminated boardstock; polyolefin; rigid polyurethane spray foam	GWP ≥ 150	(a)(14)
January 1, 2026	Foam products in the (a)(14) formulations for use in space and military applications	GWP ≥ 150	(a)(15)
Aerosol propellants / solvents (2)
January 1, 2025	Aerosol products	GWP ≥ 150	(a)(16)(i)
January 1, 2028	Aerosol products (all, except defense sprays as defined in 84.3)	GWP ≥ 150	(a)(16)(ii)

Servicing. 40 CFR 84.54 restricts new manufacture/import, later sale/distribution, and installation. "Installation" is defined in 84.54(e); repairing or servicing existing R-236fa equipment is not an installation unless it meets 84.54(e), so existing systems can keep being serviced. From January 1, 2029, servicing or repairing R-236fa equipment in supermarket systems, refrigerated transport or automatic commercial ice makers must be done with reclaimed refrigerant^[2].

Source: 40 CFR 84.54, current through 91 FR 31329 (May 26, 2026). Installation defined at 40 CFR 84.54(e).

Global warming potential, in context

Frequently asked

›Why is R-236fa's GWP so much higher than R-236ea's despite the same chemical formula?

Atmospheric lifetime difference. R-236fa is 242 years; R-236ea is 11 years. The structural difference — R-236fa has a -CH₂- group between two -CF₃ groups — makes its C-H bonds essentially inert to atmospheric OH-radical attack, which is the primary removal mechanism for HFCs. R-236ea has C-H bonds adjacent to less-fluorinated carbon environments, allowing normal OH-radical attack and removal within a decade. The 22× longer lifetime of R-236fa drives its 7× higher GWP (9,810 vs 1,370).

›What is FE-36?

FE-36 is the trade name for R-236fa used as a clean-agent fire suppressant by Chemours. It was developed in the 1990s as a Halon 1211 replacement for portable fire extinguishers and some total-flooding fire suppression systems. Halon 1211 had been banned for production due to extreme ozone-depletion (ODP 3); R-236fa had zero ODP and met the suppression efficacy requirements. The high GWP was an accepted trade-off given the suppression-quality and the relatively small total annual emissions from fire-suppression applications.

›Is R-236fa used in HVAC equipment?

Rarely. Some specialty refrigeration applications use R-236fa, primarily where its A1 safety class, chemical stability, and specific boiling point (+29°F) are needed. The very high GWP makes it a poor choice for any new HVAC application where alternatives exist. R-134a (GWP 1,430) is roughly 7× lower GWP and serves similar pressure envelopes for chiller and refrigeration use.

›What's the GWP and atmospheric lifetime of R-236fa?

GWP 9,810; atmospheric lifetime 242 years. This combination places R-236fa among the highest-impact commercial HFCs. The IPCC AR6 figures are slightly different but in the same range. For comparison: R-410A is GWP 2,088; R-404A is 3,922; R-13 (CFC) is 14,400; R-218 (PFC) is 8,830.

›What's replacing FE-36 in fire suppression?

For new fire-suppression installations: FK-5-1-12 (Novec 1230, a fluorinated ketone with 5-day atmospheric lifetime and GWP <1) is the primary modern alternative; water mist systems for some applications; inert gas systems (Inergen, Argonite, Nitrogen) for total-flooding applications where the displacement-based suppression mechanism is acceptable. FM-200 (HFC-227ea, R-227ea, GWP 3,220) remains in use but faces similar AIM Act pressure to FE-36. The transition is gradual; FE-36 remains in use in portable extinguishers where its specific properties make alternatives more difficult.

Download this dataset

Full PT chart for R-236fa · CC BY 4.0 · attribute the source

CSV JSON

Sources & citations

[1]
2017 Guideline for Assignment of Refrigerant Container Colors (AHRI Guideline N-2017). AHRI. 2017. https://www.ahrinet.org/system/files/2023-06/AHRI_Guideline_N_2017.pdf (accessed October 2, 2026)
[2]
40 CFR 84.112 — Reclamation. eCFR (Office of the Federal Register). up to date as of 9/25/2026. https://www.ecfr.gov/current/title-40/chapter-I/subchapter-C/part-84/subpart-C/section-84.112 (accessed October 2, 2026). 89 FR 82859, Oct. 11, 2024
[3]
CoolProp 7.2.0. CoolProp (I. H. Bell, J. Wronski, S. Quoilin, V. Lemort). https://coolprop.org/ (accessed October 2, 2026). Bell, I. H.; Wronski, J.; Quoilin, S.; Lemort, V. Pure and Pseudo-pure Fluid Thermophysical Property Evaluation and the Open-Source Thermophysical Property Library CoolProp. Ind. Eng. Chem. Res. 53, 2498–2508 (2014). https://doi.org/10.1021/ie4033999