Duratherm HTO-FG Heat Transfer Fluid

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Duratherm HTO-FG Heat Transfer Fluid
Categories:	Fluid
Material Notes:	Duratherm HTO-FG is ideal for a wide range of closed to atmosphere (inertly sealed) applications requiring a food grade rated thermal fluid. Duratherm HTO-FG meets USDA requirements for incidental food contact (H1) and meets the requirements of 21CFR1783570 and is NSF registered. Duratherm HTO-FG’s use of highly refined base stocks ensures excellent thermal stability. Its low volatility also minimizes vapor pressure at elevated temperatures and Duratherm HTO-FG contains antioxidants, metal deactivators and corrosion inhibitors to further enhance the fluid’s longevity and help protect your system. Duratherm HTO-FG is environmentally friendly, non-toxic, non-hazardous and non-reportable. Duratherm HTO-FG poses no ill effect to worker safety. After its long service life Duratherm HTO-FG 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	ASTM D1298
	41.7 lb/ft³	ASTM D1298
	50.6 lb/ft³	ASTM D1298
	39.4 lb/ft³ @Temperature 315 °C
	43.1 lb/ft³ @Temperature 225 °C
	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
	0.00780 atm @Temperature 225 °C
	0.0230 atm @Temperature 260 °C	ASTM D2879
	0.0960 atm @Temperature 315 °C
	0.0990 atm @Temperature 316 °C	ASTM D2879

Thermal Properties	Original Value	Comments
CTE, linear	1011 µm/m-°C
Specific Heat Capacity	1.788 J/g-°C @Temperature 5.00 °C
	1.892 J/g-°C @Temperature 38.0 °C
	2.478 J/g-°C @Temperature 225 °C
	2.587 J/g-°C @Temperature 260 °C
	2.76 J/g-°C @Temperature 315 °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 5.00 °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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WDURA677 / 287875

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