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Oxidation Resistant Heat Transfer Fluid

Xceltherm® CA Plus is targeted for use in heat transfer fluid applications that require prolonged life in systems that are open to the atmosphere and subject to accelerated oxidation up to 450° F. Our advanced mineral base oils and proprietary inhibitor package enables Radco to offer a superior product for the Die Casting, Injection Molding and Extruder Markets.

Oxidative stability studies have identifies the benefits of Xceltherm® CA Plus to Typical Hot Oils:


ASTM D2272 Oxidation Stability of Steam Turbine Oils (RPVOT)

Sample Minutes to failure Total Acid Number change
Typical Hot Oil 38.1 3.425
Xceltherm® CA Plus 1958.9 0.611


Key Operating Temperatures
Maximum Bulk Fluid Operating Temperature 450ºF 232ºC
Maximum Film Temperature 500ºF 260ºC
Flash Point (PMCC)(ASTM D93)(min) 345°F 174°C
Flash Point (COC)(ASTM D92)(min) 380°F 193°C
Fire Point (ASTM D92)(min) 417°F 214°C
Autoignition Temperature (min) 660°F 349°C
Pour Point (max) -27°F -33°C
Pumpability, at 300 mm2/s (cSt) 10°F  -12°C
Normal Boiling Point, 10% fraction (min) 669°F  354°C
Physical Properties
Composition Radco-engineered hydrogenated white oil with proprietary additive package
Odor Faint, oily
Appearance Clear, Orange liquid
Average Molecular Weight 350 g/mol
Moisture Content (ppm) (max) 100 ppm
Critical Temperature 1007°F 542°C
Critical Pressure 220 psia
Critical Density 17.5 lb/ft3
Kinematic Viscosity, at 40°C/104°F (typical and range) 15.5 cSt 14.0 cSt – 18.0 cSt
Coefficient of Thermal Expansion, at 200°C/392°F 0.000495/°F 0.000892/°C
Heat of Vaporization, at Maximum use Temperature 211.7 kJ/kg (91 BTU/lb)
Heat of Combustion 46,520 kJ/kg (20,000 BTU/lb)
Color, Saybolt (ASTM D-156)(min)  30
Density, at 25°C/77°F  7.1 lbs/gal 850.4 kg/m3

* Data Represents typical laboratory samples and are not guaranteed for all samples