Duratherm HTO Heat Transfer Fluid

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Duratherm HTO Heat Transfer Fluid
Categories:	Fluid
Material Notes:	Duratherm HTO is engineered for many years of service and it’s ideal for a wide range of closed to atmosphere (inertly sealed) applications including paint, rubber, paper mill calendars, board plants, roofing, textiles, laundry, refineries and asphalt production. Duratherm HTO’s uses highly refined base stocks that ensures excellent thermal stability. Its low volatility minimizes vapor pressure at elevated temperatures. Duratherm HTO contains antioxidants, metal deactivators and corrosion inhibitors to enhance the fluid’s longevity. Duratherm HTO is environmentally friendly, non-toxic, non-hazardous and non-reportable. Duratherm HTO poses no ill effect to worker safety. Duratherm HTO can easily be disposed of with other waste oils. Information provided by Duratherm.
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Physical Properties	Original Value	Comments

Density	39.4 lb/ft³ @Temperature 315 °C
	39.4 lb/ft³ @Temperature 316 °C	ASTM D1298
	41.7 lb/ft³ @Temperature 260 °C	ASTM D1298
	43.1 lb/ft³ @Temperature 225 °C
	50.6 lb/ft³ @Temperature 38.0 °C	ASTM D1298
	51.9 lb/ft³ @Temperature 5.00 °C
Viscosity	0.49 cP @Temperature 315 °C	Dynamic
	0.92 cP @Temperature 225 °C	Dynamic
	250.63 cP @Temperature 5.00 °C	Dynamic
Kinematic Viscosity	0.74 cSt @Temperature 315 °C
	1.26 cSt @Temperature 225 °C
	6.34 cSt @Temperature 100 °C	ASTM D445
	39.35 cSt @Temperature 40.0 °C	ASTM D445
	286.16 cSt @Temperature 5.00 °C
Molecular Weight	371 g/mol	Average
Vapor Pressure	0.000 atm @Temperature 38.0 °C	ASTM D2879
	0.000 atm @Temperature 5.00 °C
	0.00800 atm @Temperature 225 °C
	0.0230 atm @Temperature 260 °C	ASTM D2879
	0.0990 atm @Temperature 316 °C	ASTM D2879
	0.100 atm @Temperature 315 °C

Thermal Properties	Original Value	Comments
CTE, linear	1011 µm/m-°C
Specific Heat Capacity	0.00180 J/g-°C @Temperature 5.00 °C
	0.00250 J/g-°C @Temperature 225 °C
	0.00280 J/g-°C @Temperature 315 °C
	1.892 J/g-°C @Temperature 38.0 °C
	2.587 J/g-°C @Temperature 260 °C
	2.763 J/g-°C @Temperature 316 °C
Thermal Conductivity	0.121 W/m-K @Temperature 316 °C
	0.121 W/m-K @Temperature 315 °C
	0.124 W/m-K @Temperature 260 °C
	0.126 W/m-K @Temperature 225 °C
	0.136 W/m-K @Temperature 38.0 °C
	0.138 W/m-K @Temperature 0.000 °C
Distillation Temperature	372 - 455 °C	10% to 90% range; ASTM D2887
Maximum Service Temperature, Air	315 °C	Bulk/Use Temp.
	332 °C	Film Temp.
Pour Point	-15.0 °C	ASTM D97
Flash Point	218 °C	ASTM D92
Ignition Temperature	360 °C	ASTM E-659-78

Descriptive Properties
Appearance	Clear and bright liquid
Fire Point (°C)	231	ASTM D92

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WDURA675 / 287873

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