Clearco Products PSF-50cSt Silicone Heat Transfer Fluid

Identification & Functionality

Base Oil Type: Polydimethyl Siloxane
Chemical Family: Silicones
Heat Transfer Fluid Type: Low Temperature Fluids
Product Type: Heat Transfer Fluid
CAS No.: 63148‐62‐9
Technologies: Ready-to-Use Products
Product Families: Ready-to-Use Products — Fluids & Lubricants
Heat Transfer Fluids

Features & Benefits

Labeling Claims: Low Pour Point
Ready-to-Use Product Features: High Dielectric Strength,
High Flash Point,
Hydrophobic,
Low Viscosity,
Odorless,
Service Life Extension,
Wide Temperature Operating Range
Product Highlights: PSF‐50cSt Silicone Heat Transfer Fluid is characterized by its low pour point, wide service temperature range, high flash point, low viscosity change at temperature (low V.T.C.), high dielectric strength, inertness to virtually all components and hydrophobic nature (insoluble in water).

PSF‐50cSt has a low viscosity‐temperature coefficient or V.T.C. (viscosity at 99°C ÷viscosity at 38°C). Thus, it will not exhibit a wide viscosity increase at lower temperatures. For example, at –40°C, its viscosity increases to approx. 320cSt. This is critical for baths that have pumping systems that cannot operate with higher viscosity fluids. However, if lower viscosities are required at low temps, we provide a line of low temperature fluids.
Features: 100% PDMS silicone fluid.

Wide service temperature range.

Hydrophobic: Insoluble with water.

Compatible with virtually all o‐rings, gaskets, hoses, valves and seals.

Applications & Uses

Markets: Industrial
Applications: Industrial — Chemical & Industrial Manufacturing
Equipment & Parts
Applications: Heat transfer systems, closed system baths, constant temperature baths, circulating baths, low temperature refrigerated baths, closed loop baths, heat transfer baths.

Properties

	Value	Units	Test Method / Conditions
Thermal Conductivity (25°C)	0.00036	g cal/cm.sec.°C	-
Coefficient of Thermal Expansion	0.00106	cc/cc °C	-
Specific Heat (25°C)	1.5	J/g °C	-

	Value	Units	Test Method / Conditions
Dielectric Strength	400.0	volts/mil	-
Dielectric Constant (50Hz, 25°C)	2.75	-	-
Dielectric Constant (100Hz, 25°C)	2.71	-	-
Dielectric Constant (100Hz, 150°C)	2.35	-	-
Volume Resistivity (25°C)	1.0 x 10¹⁵	ohm‐cm	-
Volume Resistivity (150°C)	5.0 x 10¹³	ohm‐cm	-
Dielectric breakdown strength (2.5mm)	50.0	kV	-
Dissipation Factor (100Hz, 25°C)	0.0002	-	-
Dissipation Factor (100Hz,150°C)	0.00016	-	-

Packaging & Availability

Packaging Type: Drums,
Pails
Packaging: 1‐gallon (3.78 liters) 3.6kg / 8lbs net wt.

5‐gallon pail (18.9 liters) 18kg / 40lbs net wt.

55‐gallon drum (208 liters) 200kg / 440lbs net wt.

Knowde Enhanced TDS