Opteon™ XL20
Refrigerant (R-454C)

Product Information
Opteon™ XL20 (R-454C) is a lower flammability, low global
warming potential (GWP), hydrofluoro-olefin (HFO) – based
refrigerant for new equipment. For positive displacement,
direct expansion low- and medium temperature refrigeration
applications, XL20 is an alternative to legacy HFC refrigerants such as R-404A, R-507, and R-407 series fluids.
Opteon™ XL20 also provides an optimal balance of sustainability, performance, and safety for many heat pump applications.
With a GWP of 148(AR4), Opteon™ XL20 meets many of theapplication specific regulations requiring new system designs
to utilize < 150 GWP refrigerants, such as the proposal insubsection (i) of the American Innovation and Manufacturing(AIM) act or F-Gas Regulation 517/2014.
Since Opteon™ XL20 is classified as a lower flammability(ISO/ASHRAE Class 2L) refrigerant, it allows for larger
charge sizes compared to flammable and higher flammability
ASHRAE/ISO Class 2 and 3 refrigerants. Users should
always check relevant regulations and standards to verify theallowable charge, new equipment design and safe handlingrequirements for the intended application.

Applications

••••
•
•

Low and medium temperature commercial and industrial
refrigeration systems formerly designed for high GWP
HFC and HCFC refrigerants such as R-22, R-404A,
R-507, and R-407 series
Supermarkets
Distributed system
Walk in cooler/freezer, prep rooms, etc.
Condensing units (e.g. in food service)
Cold Storage Refrigeration
Self-Contained refrigeration systems (e.g. ice makers, ice
cream machines, etc.)
Residential and commercial heat pumps (air to water,brine to water, etc.)

Benefits•••••••

AR4 GWP of 148 (96 % reduction versus R-404A)
Zero ozone depletion
Better energy efficiency ratio relative to R-404A
Minimal equipment sizing differences relative to legacy
HFC/HCFC designs
Can be topped-off after leaks
ASHRAE Safety classification of A2L enables higher
charge sizes than ASHRAE A2 or A3 refrigerants in mostapplications
Miscible with POE lubricantsOpteon™ XL20 properties
ASHRAE NumberComposition
Weight %Molecular Weight
Normal Boiling Point¹
Critical Pressure
Critical Temperature
Liquid Density at 21.1 °C (70 °F)

R-454CR-32/R-1234yf
21.5/78.5
90.8 g/mol-45.6 °C (-50.0 °F)
4318.9 kPa (626.4 psia)
85.7 °C (186.2 °F)
1058.2 kg/m³ (66.1 lb/ft³)

Ozone Depletion Potential(CFC-11 = 1.0)0AR4 (AR5) GWP (CO₂ = 1.0)

146 (148)

ASHRAE Safety Classification
Temperature GlideLower Flammability Limit²¹ Normal bubble point² ASHRAE Standard 34 - 2022 Addendum A

A2L~6 K (~10.8 R)
7.7 vol%Opteon™ XL20

Refrigerant

Thermodynamic Performance
The tables below summarize the thermodynamic cycle performance of R-454C relative to R-404A at standard low andmedium temperature refrigeration conditions.
*Low Temperature Model Conditions:40.5 °C (105 °F) Cond, -28.8 °C (-20 °F) Evap, 16.6 K (30 R) Superheat, 5.5 K (10 R) Subcool, 75% efficiency
Refrigerant

Relative Capacity

Relative COP

Relative Mass
Flow Rate

Suction PressurekPa (psia)

Discharge PressurekPa (psia)

Discharge Temperature°C (°F)

R-404A

1.00

1.00

R-454C

0.89

1.06

1.00

213.1 (30.9)

1846.4 (267.8)

78.4 (173.1)

0.80

167.5 (24.3)

1612.0 (233.8)

88.9 (192.1)*Evap and Cond temp are in mid-point

Medium temperature Model Conditions:40.5 °C (105 °F) Cond, -6.7 °C (20 °F) Evap, 16.6 K (30 R) Superheat, 5.5 K (10 R) Subcool, 75% efficiency
Suction PressurekPa (psia)

Discharge PressurekPa (psia)

Discharge Temperature°C (°F)

1.00

486.1 (70.5)

1846.4 (267.8)

69.3 (156.8)

0.81

397.8 (57.7)

1612.0 (233.8)

76.8 (170.2)

Refrigerant

Relative Capacity

Relative COP

Relative Mass
Flow Rate

R-404A

1.00

1.00R-454C

0.91

1.04

*Evap and Cond temp are in mid-point

For more information on the Opteon™ family of refrigerants or otherrefrigerants from Chemours, visit opteon.com
For refrigerant related support, contact our Tech2Tech Support Team

866-433-TECH (8324), or email tech2tech@chemours.com
For more information on the Opteon™ family of refrigerants or other refrigerants from Chemours, visit opteon.com
The information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It isintended for use by persons having technical skill, at their own risk. Since conditions of use are outside our control, we make no warranties,
expressed or implied and assume no liability in connection with any use of this information. Nothing herein is to be taken as a license tooperate under, or a recommendation to infringe any patents or patent applications.
© 2024 The Chemours Company FC, LLC. Opteon™ and any associated logos are trademarks or copyrights of The Chemours Company FC, LLC. Chemours™ and the Chemours Logo aretrademarks of The Chemours Company.
C-10999 (1/2024)