Did you know there are many options to consider when selecting thermal fluids?

  1. Temperature is Everything – match your bulk temperature but also consider film temperature, heater type
  2. Controlling Oxidation – high temperature air exposure can destroy the wrong fluid quickly
  3. Maximizing Fluid Life – short-term or long-term use – invest wisely
  4. Availability is Critical – thermal fluids are often critical to production – how long can you wait for your thermal fluid to ship?
  5. Reliable Service & Support – thermal fluids are maintenance-intensive, but can your vendor help you if there are problem

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PRODUCTS

Duratherm 450-FG

A food grade thermal fluid rated to 233°C (450°F), Duratherm 450-FG is made for applications in the food industry that need both process heating and cooling. Cost effective and stable across a wide temperature range, it meets USDA’s standards for incidental food contact, is NSF registered as HT1, and meets the requirements of 21 CFR 178.3570.

  • Food grade thermal fluid made for both heating and cooling cycles
  • Kosher, NSF registered and meets FDA 21 CFR 178.3570
  • 233°C (450°F) maximum operating temperature
  • Pumpable down to -45°C (-49°F)
  • Provides excellent resistance to oxidation for a longer service life
Standard
Metric

Temperature Ratings

Max Bulk/Use Temp 232°C
Max Film Temp. 254°C
Pour Point ASTM D97 -45°C

Safety Data

Flash Point ASTM D92 150°C
Fire Point ASTM D92 164°C
Autoignition ASTM E-659-78 329°C

Thermal Properties

Thermal Expansion Coefficient 0.1016 %/°C
Thermal Conductivity W/m·K
-18°C 0.137
-18°C 0.135
38°C 0.131
204°C 0.116
Heat Capacity kJ/kg·K
-18°C 2.052
-18°C 2.110
38°C 2.299
204°C 2.864

Physical Properties

Viscosity ASTM D445 cSt
-18°C 559.09
-18°C 129.20
204°C 0.80
Density ASTM D1298 kg/l
-18°C 0.87
-18°C 0.86
38°C 0.82
204°C 0.71
Vapor Pressure ASTM D2879 kPa
-18°C 0.00
-18°C 0.00
38°C 0.00
204°C 7.72
Distillation Range ASTM D2887
10% 263°C
90% 508°C
Molecular Weight 372

Note: The values quoted in the table above are typical of normal production.
They do not constitute a specification.

Temperature Ratings

Max Bulk/Use Temp 450°F
Max Film Temp. 490°F
Pour Point ASTM D445 -49°F

Safety Data

Flash Point ASTM D92 302°F
Fire Point ASTM D92 327°F
Autoignition ASTM E-659-78 625°F

Thermal Properties

Thermal Expansion Coefficient 0.0564 %/°F
Thermal Conductivity BTU/hr·ft·F°
-30°F 0.079
0°F 0.078
100°F 0.076
Heat Capacity BTU/lb·F°
-30°F 0.490
0°F 0.504
100°F 0.549

Physical Properties

Viscosity ASTM D445 cSt
40°F 33.02
100°F 8.92
Density ASTM D1298 lb/ft³
-30°F 54.30
0°F 53.60
100°F 51.40
Vapor Pressure ASTM D2879 psia
-30°F 0.00
0°F 0.00
100°F 0.00
Distillation Range ASTM D2887
10% 505°F
90% 947°F
Molecular Weight 372

Note: The values quoted in the table above are typical of normal production.
They do not constitute a specification.

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