Opteon™ 2P50
Developmental Dielectric
Heat Transfer Fluid

Physical, Dielectric, and Environmental Properties

Technical Information
Introduction
In response to the growing need for highperformance products with a low global warming
potential (GWP), Chemours has developed a
new heat transfer solution, Opteon™ 2P50, adevelopmental dielectric fluid for use in immersion
cooling applications.
Opteon™ 2P50 is a developmental proprietaryhydrofluoroolefin fluid with zero ozone depletion
potential (ODP) and a very low GWP of 10 (AR6).
Opteon™ 2P50 provides excellent physicalproperties and performance characteristics as animmersion fluid: it is colorless, nonflammable, andsafe to use in the intended application.
Opteon™ 2P50 has no flash point, an auto-ignition
temperature of 554°C (1029.2°F), and a boilingpoint of 48.9°C (120.0°F), making it appropriate
for replacing PFPEs, HFEs, and HFKs in immersion
cooling applications.

PropertyUnits

Opteon™
2P50

Boiling Point°C (°F)

48.9 (120.0)

Liquid Density at 25°C

g/cm3

1.456

Vapor Pressure at 25°C

MPa

0.040

Vapor Flammability, ASTM E-681% volnone

Solubility of H2O at 25°C

ppm

145

Liquid Viscosity at 25°C

cP

0.62

Critical Temperature°C (°F)

176 (348.8)

Critical Pressure

MPa

2.7

Surface Tension at 25°C

N/m

0.011

Heat of Vaporization at Boiling Pt.

kJ/kg·K

115

Liquid Thermal Conductivity at 25°C

W/m·K

0.073

Liquid Specific Heat at 25°C

kJ/kg·K

1.09

Global Warming Potential (AR6)100-yr ITH

10Ozone Depletion Potential (ODP)—none

Dielectric Constant (ASTM D924)

N/A

1.82

Volume Resistivity (ASTM D1169)

Ohms-cm5.1x1014

Breakdown Voltage (ASTM D877)kV/0.1 in

41.3(IEC 60156)

kV/2.5mm

59Flash Point (ASTM D93)

°C

none

Auto-Ignition Temp (ASTM E659)

°C

554

Opteon™ 2P50 | Developmental Dielectric Heat Transfer FluidMaterial Compatibility
MetalsElastomers

Opteon 2P50 developmental heat transfer fluid iscompatible with most metals. Exposures to stainlesssteel, copper, brass, and aluminum up to 175°C (347 °F)
for 1 week showed good stability as summarized below.
Opteon™ 2P50 is not compatible with strong bases;
therefore, contact with highly basic process materials
is not recommended. Contact with strong Lewis acids,
such as aluminum trichloride, alkali and alkaline earth
metals, powdered metals, and powdered metal salts, isalso not recommended.

Exposures to elastomers at 80ºC for 2 weeks areshown. Some reversible swelling is expected withpartially fluorinated elastomers. Consult with yourlocal Chemours thermal management representative
to help answer questions about specific materials
compatibility in your application.

™

Elastomer

WeightChange (%)

VolumeChange (%)

Hardness
ChangeNeoprene
C1276 -70-0.2

0.40Neoprene
C0873-70

0.20.00Epichlorohydrin-0.1-0.2-1

Butyl rubber

1.90.5-3

Metal

WeightChange (%)

SolventAppearance

Fluoride IC(ppm)

Aluminum< 0.01

Clear,
colorless< 0.2 ppm*

< 0.01

Clear,
colorless< 0.2 ppm*

EPDM

1.2

0.4-2

Brass

< 0.01

Clear,
colorless< 0.2 ppm*

Fluorosilicone

16.9

12.6-15

Zn-plated steel< 0.01

Clear,
colorless< 0.2 ppm*

HNBR nitrile

1.1

1.3-2

<-0.1

3.3

0-0.27

Clear,
colorless

NBR nitrile

Indium foil

< 0.2 ppm*

Fluorocarbon FKM

14.0

16.3-12Natural Rubber

1.4

2.60Silicone Rubber

4.3

3.3-4

CopperPlastics
Opteon™ 2P50 is compatible with most plastics.
Exposures to plastics at 80ºC for 2 weeks showed goodcompatibility. Consult with your local Chemours thermal
management representative to help answer questions
about specific materials compatibility in your application.
Plastic

WeightChange (%)

VolumeChange (%)

Hardness
ChangeNylon resin Zytel® 330

-0.3

2.4

0.8

Nylon 6,6 Zytel® 101-0.3

-0.1

0.1

Torlon® polymer

-0.3

0.0

<-0.1

Ryton® polymer<-0.1

0.00.2

Teflon™

4.1

4.8-1.1

HDPE

0.5-0.9-0.9

Polyurethane-1.0-0.3

1.6

Polypropylene

1.5

0.2

0.7

Polycarbonate<-0.1

0.0-0.5

PEEK

<-0.1

0.8

<-0.1

Bakelite

-0.7

0.8

1.0

Additional material compatibility data obtained by theSoxhlet extraction method—as per Open Compute
Project (OCP) guidelines—are available upon request.

Storage and HandlingOpteon™ 2P50 is thermally stable and does not oxidize
or degrade during storage. It exhibits no flash point
and is designated as a nonflammable liquid (ASTMD56). Refer to Safety Data Sheet (SDS) for additionalsafety information.

*Minimum detection limit

Opteon™ 2P50 | Developmental Dielectric Heat Transfer FluidTemperature-Dependent Properties
Liquid Specific Heat & Thermal Conductivity

Liquid Viscosity & Density

The temperature dependence of liquid thermal
conductivity and of liquid specific heat for
Opteon™ 2P50 developmental heat transfer fluid.

The temperature dependence of liquid viscosity and ofliquid density for Opteon™ 2P50 developmental heattransfer fluid.

Dissipation Factor

Dielectric Constant

The frequency dependence of dissipation factor forOpteon™ 2P50 developmental heat transfer fluid.

The frequency dependence of dielectric constant for
Opteon™ 2P50 developmental heat transfer fluid.

Vapor Pressure
The temperature dependence of vapor pressure
for Opteon™ 2P50 developmental heat transfer fluid.

For more information on the Opteon™ family of refrigerants, or otherrefrigerants products, visit opteon.com or call (800) 235-7882.
The information set forth herein is furnished free of charge and based ontechnical data that Chemours believes to be reliable. It is intended for use bypersons having technical skill, at their own risk. Because conditions of use areoutside our control, Chemours makes no warranties, expressed or implied, andassumes no liability in connection with any use of this information. Nothingherein is to be taken as a license to operate under, or a recommendation toinfringe, any patents or patent applications.
© 2023 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 are trademarks of The Chemours Company.

Opteon™ 2P50 | Developmental Dielectric Heat Transfer Fluid