Duratherm G Polyalkylene Glycol Heat Transfer Fluid

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Duratherm G Polyalkylene Glycol Heat Transfer Fluid
Categories:	Fluid
Material Notes:	Glycol fluids such as Ucon 500™ have been used for years but have generally offered very little protection from negative elements such as oxidation. Duratherm G also has reduced odors and improved clarity. Information provided by Duratherm. Information provided by Duratherm.
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Physical Properties	Original Value	Comments

Density	53.5 lb/ft³ @Temperature 260 °C
	53.5 lb/ft³ @Temperature 260 °C	ASTM D1298
	56.0 lb/ft³ @Temperature 121 °C	ASTM D1298
	56.4 lb/ft³ @Temperature 100 °C
	57.5 lb/ft³ @Temperature 38.0 °C	ASTM D1298
	58.8 lb/ft³ @Temperature -40.0 °C
Viscosity	1.06 cP @Temperature 260 °C	Dynamic
	6.86 cP @Temperature 100 °C	Dynamic
	18170.94 cP @Temperature -40.0 °C	Dynamic
Kinematic Viscosity	1.23 cSt @Temperature 260 °C	ASTM D445
	5.16 cSt @Temperature 121 °C	ASTM D445
	7.6 cSt @Temperature 100 °C
	42.1 cSt @Temperature 40.0 °C	ASTM D445
	19283.44 cSt @Temperature -40.0 °C
Vapor Pressure	0.000 atm @Temperature -40.0 °C
	0.00200 atm @Temperature 38.0 °C	ASTM D2879
	0.00680 atm @Temperature 100 °C
	0.00920 atm @Temperature 121 °C	ASTM D2879
	0.0340 atm @Temperature 260 °C	ASTM D2879
	0.0340 atm @Temperature 260 °C

Thermal Properties	Original Value	Comments
CTE, linear	679 µm/m-°C
Specific Heat Capacity	1.895 J/g-°C @Temperature -40.0 °C
	1.976 J/g-°C @Temperature 38.0 °C
	2.041 J/g-°C @Temperature 100 °C
	2.063 J/g-°C @Temperature 121 °C
	2.207 J/g-°C @Temperature 260 °C
	2.207 J/g-°C @Temperature 260 °C
Thermal Conductivity	0.160 W/m-K @Temperature 260 °C
	0.160 W/m-K @Temperature 260 °C
	0.173 W/m-K @Temperature 121 °C
	0.175 W/m-K @Temperature 100 °C
	0.181 W/m-K @Temperature 38.0 °C
	0.189 W/m-K @Temperature -40.0 °C
Distillation Temperature	367 - 513 °C	10% to 90% range; ASTM D2887
Maximum Service Temperature, Air	260 °C	Bulk/Use Temp.
	287 °C	Film Temp.
Pour Point	-40.0 °C	ASTM D97
Flash Point	248 °C	ASTM D92
Ignition Temperature	373 °C	ASTM E-659-78

Descriptive Properties
Appearance	Clear liquid, very slight yellow tint
Fire Point (°C)	284	ASTM D92

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