Description
Thermaflo® 62 is a synthetic heat transfer fluid based on diisopropyl biphenyl chemistry, specifically engineered for non-pressurized, closed-loop systems requiring exceptional thermal stability at elevated temperatures. The alkyl-substituted biphenyl molecular structure provides an optimal balance of high-temperature performance and low vapor pressure characteristics, enabling operation at bulk temperatures up to 330°C (626°F) without the need for pressurized system designs. With a boiling range of 319°C to 332°C (606°F to 630°F) at atmospheric pressure—well above the maximum recommended operating temperature—Thermaflo® 62 maintains liquid-phase operation throughout its service envelope. This fluid’s outstanding oxidation resistance and inherent resistance to solids formation result in extended service life and reduced system maintenance requirements.
- True High-Temperature Performance: Delivers reliable continuous operation to 325°C (620°F) with maximum film temperatures to 360°C (680°F), providing operational margin for demanding process conditions.
- Low-Pressure System Compatibility: Vapor pressure of only 10 psi at 316°C (600°F) enables use in conventional non-pressurized heat transfer systems, reducing equipment complexity and capital costs.
- Fouling-Resistant Chemistry: Diisopropyl biphenyl structure is specifically engineered to resist thermal cracking and solids formation, minimizing system fouling and maintaining heat transfer efficiency.
- Extended Fluid Lifecycle: Exceptional thermal stability and oxidation resistance provide years of reliable, trouble-free operation with minimal degradation.
Applications
Chemical Manufacturing · Reactor Heating · Distillation Columns · Plastics & Polymer Production · Organic Rankine Cycle (ORC) Systems · Biofuel Manufacturing · Waste Heat Recovery · Biomass Processing · Polymerization Vessels · Process Dryers · Heat Exchangers · Specialty Chemical Synthesis · Textile Processing · Industrial Heat Processing
Benefits
Exceptional Thermal Stability · Low Vapor Pressure Operation · Non-Pressurized System Compatibility · Extended Service Life · Fouling-Resistant Formulation · High Purity · Excellent Oxidation Resistance · Reduced Maintenance Requirements
Product Availability
5 Gal (20 kg) · 55 Gal Drum (220 kg) · Bulk (Totes / Tankers)
Product Data
| Property | Specification |
| Appearance | Colorless to Pale Yellow |
| Composition | Diisopropyl Biphenyl |
| Moisture Content (ppm) | <200 |
| Flash Point, COC | 340°F (171°C) |
| Autoignition Temperature (ASTM D-2155) | 783°F (417°C) |
| Kinematic Viscosity @ 40°C (cSt) | 11 |
| Kinematic Viscosity @ 100°C (cSt) | 2.4 |
| Density @ 20°C (lbs/gal) | 7.94 |
| Specific Gravity @ 20°C | 0.952 |
| Freeze Point | <14°F (<-10°C) |
| Pumpability Limit (KV=400 cSt) | 14°F (-10°C) |
| Boiling Range @ 760 mmHg | 606°F–630°F (319°C–332°C) |
| Bulk Temperature Range | -4°F–626°F (-20°C–330°C) |
| Maximum Film Temperature | 680°F (360°C) |
| Total Acid Number (Max) | <0.05 mg KOH/g |
| Thermal Conductivity (@ 600°F / 316°C) | 0.053 BTU/ft/hr |
| Vapor Pressure (@ 600°F / 316°C) | 10 psi |
| Average Molecular Mass | 252 |
