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Duratherm HF-FG

A food grade thermal fluid rated to 337°C, Duratherm HF-FG is specifically engineered for process heating and cooling applications that need the added safety of a high flash point. Economical and thermally stable, it meets USDA requirements for incidental food contact, is NSF registered HT1, and meets the requirements of 21 CFR 178.3570.

  • Food grade – Kosher, NSF registered and meets FDA 21 CFR 178.3570
  • 226°C flash point, the highest rating of any food grade thermal fluid
  • 337°C maximum operating temperature
  • Engineered for use in a wide variety of food and beverage applications
  • Runs cleaner with an extended service life
Temerature Ratings
Maximum Bulk/Use Temp 338°C
Maximum Film Temp 360°C
Pour Point ASTM D445 -9°C
Safety Data
Flash Point ASTM D92 277°C
Fire Point ASTM D92 306°C
Auto Ignition ASTM E-659-78 394°C
Thermal Properties
Thermal Expansion Coefficient 0.1012 %/°C
Thermal Conductivity W/m·K
38°C 0.149
204°C 0.145
260°C 0.145
288°C 0.144
316°C 0.144
332°C 0.144
Heat Capacity kJ/kg·K
38°C 1.876
204°C 2.168
260°C 2.269
288°C 2.319
316°C 2.366
332°C 2.394
Physical Properties
Viscosity ASTM D445 cSt
40°C 104.26
100°C 12.46
260°C 1.47
288°C 1.22
316°C 1.04
332°C 0.96
Density ASTM D1298 d/ml
38°C 0.859
204°C 0.798
260°C 0.778
288°C 0.768
316°C 0.758
332°C 0.752
Vapour Pressure ASTM D2879 kPa
38°C 0
204°C 0.138
260°C 1.517
288°C 4.206
316°C 11.997
332°C 24.601
Distillation Range ASTM D2887
10% 446°C
90% 555°C
Average Molecular Weight 399

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


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