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XCELTHERM® TPL – Typical Properties

Direct replacement for Hydrogenated Terphenyl based heat transfer fluids, chemically equivalent to DowthermTM RP* and Therminol® 66*. Fouling resistant synthetic for low pressure systems operating up to 650°F (345°C). Recommended for oil and gas processing, chemical manufacturing, refining operations, low pressure thermal fluid systems, bio-products, polymer and resin production and many other applications.

Typical Properties

Key Temperatures
Maximum Bulk Fluid Operating Temperature 650°F 345°C
Maximum Film Temperature 700°F 371°C
Flash Point (PMCC) (ASTM D93) (min) 302°F 150°C
Flash Point (COC) (ASTM D92) (min) 363°F 184°C
Fire Point (ASTM D92) (min) 378°F 192°C
Autoignition Temperature (ASTM E659) (min) 705°F 374°C
Pour Point (ASTM D97) (max) 10°F -12°C
Pumpability, at 300 cSt 52°F 11°C
Pumpability, at 2000 cSt 27°F -3°C
Normal Boiling Point 678°F 359°C
Optimum Use Temperature (min to max) 30 – 650°F 0 – 345°C
Physical Properties
Appearance Pale yellow liquid
Odor Faint, Characteristic
Composition Hydrogenated terphenyl
Moisture Content (max) 150 ppm
Density, at 77°F/25°C 8.40 lbs/gal 1,007 kg/m3
Specific Gravity, at 20°C /20°C (typical & range) 1.012
Kinematic Viscosity, at 104°F/40°C 30.5 cSt
Kinematic Viscosity, at 212°F/100°C 4 cSt
Coefficient of Thermal Expansion 0.000455/°F 0.000819°C
Total Acid Number (ASTM D974) < 0.01 mg KOH/g
Acetone Insolubles < 10mg/100ml