Wide Temperature Silicone Heat Transfer Fluids provide consistent temperature at temps ranging from –50°C to 230°C.

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Wide Temperature Silicone Heat Transfer Fluids

PSF-20cSt Silicone Heat Transfer Fluid (-50°C to 220°C)
PSF-50cSt Silicone Heat Transfer Fluid (-40°C to 230°C)
PSF-100cSt Silicone Heat Transfer Fluid (-40°C to 230°C)

* all temperature ranges reflect a closed system.
* cSt is a measure of centistoke or mm2/sec.

Chemical Composition: Linear Polydimethylsiloxane (Dimethylpolysiloxane or PDMS)

Product Offsets: Dow Corning 200® fluid, 20cs Xiameter® PMX-200, 20cs, Xiameter PMX-200, 50cs, Xiameter® PMX-200, 100cs, Dow Corning 200® fluid, 50cs, Dow Corning 200® fluid, 100cs, Momentive SF96-20, Momentive SF95-50, Momentive SF96-100, GE SF96-20, GE SF96-50, GE SF96-100, Momentive Element 14® PDMS 20, Momentive Element 14® PDMS 50, Momentive Element 14® PDMS 100

Wide Temperature Silicone Heat Fluids are linear Polydimethylsiloxane fluids that are formulated for use as cold and heat transfer mediums in a wide range of applications. Silicone Heat Transfer Fluids are clear, colorless, odorless, and inert to virtually all metals, plastics and rubbers found in heat transfer systems.

The Wide Temperature Silicone Heat Transfer Fluids encompass a viscosity range from 20cSt to 100cSt (measures @ 25°C). They are characterized by their low pour points, high flash points, wide service temperature range, high dielectric strength, high resistance to oxidation, low viscosity change at temperature (low V.T.C.), long service life, and hydrophobic nature (insoluble in water).

Wide Temperature Silicone Heat Transfer Fluids have Thermal Conductivity values between 0.00034 to 0.00037 g/cal/cm/sec °C or 0.15 to 0.16 W/m °C. The Specific Heat values are 0.36 cal/g °C and 1.6 to 1.5 J/g °C .j

Silicone Heat Transfer Fluids have low Viscosity-Temperature Coefficients (V.T.C.), and will experience little viscosity increase even at extremely low temperatures. The Viscosity-temperature coefficient or V.T.C. is a measure of viscosity @ 99°C ÷viscosity @ 38°C. Thus, the lower the VTC #, the lower the viscosity change. This is critical for systems that cannot pump higher viscosity fluids. At extremely low temps, the fluids will still circulate and provide a consistent temperature.

Applications include: heat transfer systems, calibration bath fluids, silicone fluid for temperature control systems, closed system baths, constant temperature baths, low temperature circulating baths, calibration bath fluid, circulator baths, refrigerated baths, closed loop baths.

Properties

Clear, colorless, odorless fluids & inert fluids
Long service life @ recommended service temperatures
Low viscosity: will not put strain on pumps.
Low pour points: as low as -60°C
Thermal conductivity: 0.00034 to 0.00037 g/cal/cm/sec °C
Specific heat value: 0.36 cal/g °C
Excellent low temperature stability with little viscosity increase (low VTC)
Exhibit significantly less viscosity change than petroleum based oils.
Formulated from 100% synthetic sources.
Long service life when used for recommended temperature ranges.
Inert to virtually all bath instrumentation and plastics
Environmentally friendly: VOC Exempt & HAP Free
Hydrophobic- will not absorb water

Product Data

Property	PSF-20cSt	PSF-50cSt	PSF-100cSt
Chemical family	Polydimethylsiloxane	Polydimethylsiloxane	Polydimethylsiloxane
Chemical name	Polydimethylsiloxane	Polydimethylsiloxane	Polydimethylsiloxane
CAS #	63148-62-9	63148-62-9	63148-62-9
Appearance	clear, colorless	clear, colorless	clear, colorless
Odorless	Yes	Yes	Yes
Hydrophobic	Yes	Yes	Yes
Viscosity @ 25°C	20cSt	50cSt	100cSt
V.T.C.	0.59	0.59	0.59
Soluble in water	no	no	no
Pour point	-60°C	-55°C	-55°C
Flash point	232°C	285°C	315°C
Boiling point	>200°C	>250°C	>250°C
Vapor pressure @ 25°C	<1mmHg	<1mmHg	<1mmHg
Specific heat @ 25°C J/g °C	1.7	1.5	1.5
Thermal expansion cc/cc/°C	0.00107	0.00106	0.00096
Thermal conductivity g/cal/cm/sec °C	0.00034	0.00036	0.00037
Service temperature	-50°C to 220°C	-40°C to 230°C	-40°C to 230°C