Paratherm Corporation Paratherm™ CR Heat Transfer Fluid

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Paratherm Corporation Paratherm™ CR Heat Transfer Fluid
Categories:	Fluid
Material Notes:	Paratherm CR® heat transfer fluid is a blend of synthetic components formulated to provide superior cooling performance in closed-loop heat-transfer systems operating down to -88°C (-127°F) yet is capable of maintenance free operation up to 218°C (425°F). Applications include Fine and specialty chemical processing, pharmaceutical production, and environmental test chambers Information provided by Paratherm Corporation.
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Physical Properties	Original Value	Comments

Density	5.30 lb/gal @Temperature 218 °C
	5.60 lb/gal @Temperature 177 °C
	6.10 lb/gal @Temperature 121 °C
	6.50 lb/gal @Temperature 65.6 °C
	6.80 lb/gal @Temperature 23.9 °C
	6.90 lb/gal @Temperature 15.6 °C
	7.30 lb/gal @Temperature -17.8 °C
	7.40 lb/gal @Temperature -45.6 °C
	7.70 lb/gal @Temperature -73.3 °C
Viscosity	0.24 cP @Temperature 218 °C
	0.28 cP @Temperature 177 °C
	0.35 cP @Temperature 121 °C
	0.51 cP @Temperature 65.6 °C
	1.0 cP @Temperature -17.8 °C
	1.0 cP @Temperature 23.9 °C
	2.0 cP @Temperature -45.6 °C
	5.0 cP @Temperature -73.3 °C
Viscosity Measure	0.38 cSt @Temperature 218 °C
	0.42 cSt @Temperature 177 °C
	0.48 cSt @Temperature 121 °C
	0.65 cSt @Temperature 65.6 °C
	0.94 cSt @Temperature 23.9 °C
	1.5 cSt @Temperature -17.8 °C
	2.5 cSt @Temperature -45.6 °C
	5.5 cSt @Temperature -73.3 °C
Molecular Weight	130 g/mol	average
Vapor Pressure	28.0 torr @Temperature 65.6 °C
	208 torr @Temperature 121 °C
	719 torr @Temperature 177 °C
	1074 torr @Temperature 218 °C

Electrical Properties	Original Value	Comments
Volume Resistivity	8.3e+11 ohm-cm
Dielectric Constant	2.59 @Frequency 1000 Hz	ASTM D924-04
Dielectric Breakdown	36110 V @Thickness 2.54 mm	ASTM D1816-04
Dissipation Factor	0.00145 @Frequency 1000 Hz	ASTM D924-04

Thermal Properties	Original Value	Comments
Heat of Vaporization	82.2 cal/g
Specific Heat Capacity	0.380 BTU/lb-°F @Temperature -73.3 °C
	0.400 BTU/lb-°F @Temperature -45.6 °C
	0.430 BTU/lb-°F @Temperature -17.8 °C
	0.460 BTU/lb-°F @Temperature 23.9 °C
	0.500 BTU/lb-°F @Temperature 65.6 °C
	0.550 BTU/lb-°F @Temperature 121 °C
	0.600 BTU/lb-°F @Temperature 177 °C
	0.630 BTU/lb-°F @Temperature 218 °C
Thermal Conductivity	0.864 BTU-in/hr-ft²-°F @Temperature 218 °C
	0.888 BTU-in/hr-ft²-°F @Temperature 177 °C
	0.924 BTU-in/hr-ft²-°F @Temperature 121 °C
	0.948 BTU-in/hr-ft²-°F @Temperature 65.6 °C
	0.972 BTU-in/hr-ft²-°F @Temperature 23.9 °C
	0.996 BTU-in/hr-ft²-°F @Temperature -17.8 °C
	1.008 BTU-in/hr-ft²-°F @Temperature -45.6 °C
	1.02 BTU-in/hr-ft²-°F @Temperature -73.3 °C
Boiling Point	182 °C
Maximum Service Temperature, Air	425 °F
	550 °F	max. recommended film temperature
Minimum Service Temperature, Air	-127 °F
Flash Point	>= 104 °F	closed cup; ASTM D56
Ignition Temperature	>= 430 °F	Autoignition; < 10 sec delay

Descriptive Properties
Appearance	water white
Chemistry	synthetic hydrocarbon blend
Odor	sweet

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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