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Eastman Therminol 66 Heat Transfer Fluid
Categories:
Fluid
Material Notes:
Therminol 66 is the world’s most popular high temperature, liquid phase heat transfer fluid. Therminol 66 is pumpable at low temperatures, and offers high temperature thermal stability.
Information provided by Eastman
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Physical Properties
Original Value
Comments
Density
1.005
g/cc
@Temperature 25.0 °C
Liquid; ASTM D4052
1.012
g/cc
@Temperature 15.0 °C
Liquid; ASTM D4052
Kinematic Viscosity at 40°C (104°F)
29.6
cSt
ASTM D445
Kinematic Viscosity at 100°C (212°F)
3.8
cSt
ASTM D445
Molecular Weight
252
g/mol
Chemical Properties
Original Value
Comments
Total Acid Number
<= 0.20
[mg KOH/g]; ASTM D664
Electrical Properties
Original Value
Comments
Dielectric Constant
2.61
ASTM D924
Thermal Properties
Original Value
Comments
CTE, linear
81.9
µm/m-°C
@Temperature 200 °C
Boiling Point
359
°C
Pour Point
-32.0
°C
ASTM D97
Flash Point
170
°C
PMCC; ASTM D93
184
°C
COC; ASTM D92
Descriptive Properties
Appearance
Clear, pale yellow liquid
Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's
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PEATM5614 / 222808
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