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Paratherm Corporation Paratherm™ LR Heat Transfer Fluid
Categories: Fluid
Material Notes: Paratherm LR™ heat transfer fluid is an aliphatic-hydrocarbon based heat transfer fluid designed for use in closed-loop, liquid phase heating and cooling systems up to 450°F in electric and steam heaters and down to a -58°F surface temperature in direct-expansion exchangers.

Information provided by Paratherm Corporation.
Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesOriginal ValueComments
Density 5.10 lb/gal
@Temperature 232 °C
 5.40 lb/gal
@Temperature 177 °C
 5.80 lb/gal
@Temperature 121 °C
 6.10 lb/gal
@Temperature 65.6 °C
 6.30 lb/gal
@Temperature 23.9 °C
 6.40 lb/gal
@Temperature 15.6 °C
 6.60 lb/gal
@Temperature -17.8 °C
 6.80 lb/gal
@Temperature -45.6 °C
 6.90 lb/gal
@Temperature -73.3 °C
Viscosity 0.18 cP
@Temperature 232 °C
 0.26 cP
@Temperature 177 °C
 0.42 cP
@Temperature 121 °C
 0.80 cP
@Temperature 65.6 °C
 1.5 cP
@Temperature 23.9 °C
 5.0 cP
@Temperature -17.8 °C
 16 cP
@Temperature -45.6 °C
 154 cP
@Temperature -73.3 °C
Viscosity Measure 0.30 cSt
@Temperature 232 °C
 0.40 cSt
@Temperature 177 °C
 0.61 cSt
@Temperature 121 °C
 1.0 cSt
@Temperature 65.6 °C
 2.0 cSt
@Temperature 23.9 °C
 5.9 cSt
@Temperature -17.8 °C
 19 cSt
@Temperature -45.6 °C
 185 cSt
@Temperature -73.3 °C
Molecular Weight 160 g/molaverage
Vapor Pressure 30.0 torr
@Temperature 107 °C
 50.0 torr
@Temperature 121 °C
 81.0 torr
@Temperature 135 °C
 145 torr
@Temperature 149 °C
 375 torr
@Temperature 177 °C
 780 torr
@Temperature 204 °C
 938 torr
@Temperature 218 °C
 1066 torr
@Temperature 232 °C
 
Electrical PropertiesOriginal ValueComments
Volume Resistivity 1.84e+14 ohm-cm
Dielectric Constant 2.03
@Frequency 1000 Hz		ASTM D924-04
Dielectric Breakdown 22150 V
@Thickness 2.54 mm		ASTM D1816-04
Dissipation Factor 0.000010
@Frequency 1000 Hz		ASTM D924-04
 
Thermal PropertiesOriginal ValueComments
Heat of Vaporization 62.6 cal/g
Specific Heat Capacity 0.390 BTU/lb-°F
@Temperature -73.3 °C
 0.420 BTU/lb-°F
@Temperature -45.6 °C
 0.440 BTU/lb-°F
@Temperature -17.8 °C
 0.480 BTU/lb-°F
@Temperature 23.9 °C
 0.520 BTU/lb-°F
@Temperature 65.6 °C
 0.570 BTU/lb-°F
@Temperature 121 °C
 0.620 BTU/lb-°F
@Temperature 177 °C
 0.670 BTU/lb-°F
@Temperature 232 °C
Thermal Conductivity 0.912 BTU-in/hr-ft²-°F
@Temperature 232 °C
 0.948 BTU-in/hr-ft²-°F
@Temperature 177 °C
 0.984 BTU-in/hr-ft²-°F
@Temperature 121 °C
 1.02 BTU-in/hr-ft²-°F
@Temperature 65.6 °C
 1.044 BTU-in/hr-ft²-°F
@Temperature 23.9 °C
 1.068 BTU-in/hr-ft²-°F
@Temperature -17.8 °C
 1.092 BTU-in/hr-ft²-°F
@Temperature -45.6 °C
 1.104 BTU-in/hr-ft²-°F
@Temperature -73.3 °C
Boiling Point 202 °C
Maximum Service Temperature, Air 450 °F
 500 °Fmax. recommended film temperature
Minimum Service Temperature, Air -58.0 °F
Flash Point >= 130 °Fclosed cup; ASTM D56
Ignition Temperature >= 500 °FAutoignition; < 10 sec delay
 
Descriptive Properties
Appearancewater white
Feedstockhydrocarbon
Odornone

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 terms of use regarding this information. Click here to go back to viewing the property data in MatWeb's normal format.

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