Paratherm™ HT Hydrogenated Terphenyl Heat Transfer Fluid
High Temperature • High Thermal Stability
Paratherm HT Heat Transfer Fluid is a partially hydrogenated terphenyl based product designed for closed-loop liquid phase heating to 650°F (343°C) in fired heaters and 675°F (358°C) in solid-fuel-fired heat recovery and full convection heaters.
|Note: If you are experiencing short supply, or long lead times for your currently specified synthetic/aromatic 650°F (terphenyl or alkylated aromatic) heat transfer fluid, call Paratherm for a point-by-point comparison of physical properties. We have product available, and may have just the fluid for your application. +1 (610) 941-4900. Or, use the links on the left side of this page to compare properties with Therminol 66.|
Partially hydrogenated terphenyls have been used successfully in high temperature heat transfer applications for many years. Because it meets the quality standards users have come to expect of this type of chemical, Paratherm HT is fully compatible with existing installations that require topping off or full replacement.
Comparison of Paratherm HT with Therminol 66*
|Property||Paratherm HT||Therminol 66|
|Chemical Composition||Modified Terphenyl||Modified Terphenyl|
|Maximum Operating Temperature||650°F (343ºC)||650°F (343°C)|
|Maximum Film Temperature||705°F (374°C)||705°F (374°C)|
|Minimum Start-up Temp (300 cSt)||52.0°F (11°C)||52.0°F (11°C)|
|Kinematic Viscosity @ 40 C||32.0 cSt||29.6 cSt|
|Kinematic Viscosity @ 100 C||4.2 cSt||3.8 cSt|
|Density @ 25 C||8.34 lb/gal (1005 kg/m3)||8.39 lb/gal (1005 kg/m3)|
|*Therminol 66 is a trademark of Solutia Inc.|
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