Performance Benefits

  • True 325°C (620°F) Performance - Users can expect many years of reliable, trouble-free operation, even when operating continuously at the recommended maximum temperature.
  • Low Pressure - Therminol 62 is designed for typical liquid phase heat transfer fluid systems which operate at low pressures.
  • Fouling Resistant - Therminol 62 is specifically engineered to resist solids formation and system fouling. Your system will operate more reliably and you will save money.

Typical Properties

AppearanceWater-white liquid
CompositionIsopropyl biphenyl mixture
Maximum bulk temperature325°C (620°F)
Maximum film temperature355°C (670°F)
Normal boiling point333°C (631°F)
Pumpability, at 300 mm2/s (cSt)-11°C (12°F)
Pumpability, at 2000 mm2/s (cSt)-23°C (-9°F)
Flash point, COC (ASTM D-92)171°C (340°F)
Flash point, PMCC (ASTM D-93)160°C (320°F)
Autoignition temperature (ASTM E-659)407°C (765°F)
Autoignition temperature (DIN 51794)433°C (813°F)
Pour point (ASTM D-97)-42°C (-44°F)
Minimum liquid temperatures for fully developed turbulent flow (NRe > 10000)
10 ft/sec, 1 in tube (3.048 m/s, 2.54 cm tube)50°C (122°F)
20 ft/sec, 1 in tube (6.096 m/s, 2.54 cm tube)31°C (88°F)
Minimum liquid temperatures for transitional region flow, (NRe > 2000)
10 ft/sec, 1 in tube (3.048 m/s, 2.54 cm tube)11°C (52°F)
20 ft/sec, 1 in tube (6.096 m/s, 2.54 cm tube)4°C (39°F)
Coefficient of thermal expansion at 200°C0.001000/°C (0.000556/°F)
Heat of vaporization at max. use temperature263.9 kJ/kg (113.6 Btu/lb)
Kinematic viscosity at 100°C (ASTM D-445)2.52 mm2/s (cSt)
Kinematic viscosity at 40°C (ASTM D-445)10.7 mm2/s (cSt)
Liquid density at 25°C (ASTM D-4052)951.1 kg/m3 (7.94 lb/gal)
Total acidity (ASTM D-664)<0.2 mg KOH/g
Average molecular weight252
Pseudocritical temperature487.0°C (908°F)
Pseudocritical pressure15.0 bar (217.5 psia)
Pseudocritical density269.4 kg/m3 (16.82 lb/ft3)
Copper corrosion (ASTM D-130)<< 1a
Moisture content, maximum (ASTM E-203)200 ppm
Dielectric constant @ 23°C (ASTM D-924)2.53
Chlorine content, ppm (DIN 51577)<10 ppm
Notice: Although the information and recommendations set forth herein are presented in good faith, Eastman Chemical Company and its wholly owned subsidiary Solutia Inc. make no representations or warranties as to the completeness or accuracy thereof. You must make your own determination of their suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. Nothing contained herein is to be construed as a recommendation to use any product, process, equipment, or formulation in conflict with any patent, and we make no representations or warranties, express or implied, that the use thereof will not infringe any patent. NO REPRESENTATIONS OR WARRANTIES, EITHER EXPRESS OR IMPLIED, OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR OF ANY OTHER NATURE ARE MADE HEREUNDER WITH RESPECT TO INFORMATION OR THE PRODUCT TO WHICH INFORMATION REFERS AND NOTHING HEREIN WAIVES ANY OF THE SELLER'S CONDITIONS OF SALE.

Safety Data Sheets providing safety precautions that should be observed when handling and storing our products are available online or by request. You should obtain and review available material safety information before handling our products. If any materials mentioned are not our products, appropriate industrial hygiene and other safety precautions recommended by their manufacturers should be observed.