Paratherm™ NF Heat Transfer Fluid

Paratherm™ NF Heat Transfer Fluid

Paratherm NF is an ultra-pure mineral oil with high naphthenic content

A carefully engineered blend of mineral oils refined by multiple hydrotreatment processes, Paratherm NF exhibits extreme purity and high naphthenic content.

Advantageous interaction between paraffinic content and heightened naphthenic content causes high density with low viscosity. These traits increase the effectiveness of the fluid, providing premium heat transfer for many industries

  • Exceptional thermal stability
  • Film temperature to 343°c
  • Non-fouling, low maintenance
  • Low pour, quick cold starts
  • Odour-free
  • Food Grade

Applications Include:

  • Chemical reactors
  • Food Processing
  • Portable electric temperature control units
  • Electric heaters

Paratherm NF has greater thermal stability than competitors.

While natural degradation over the life of any fluid is inevitable, Paratherm NF is reinforced by its high naphthenic content. This gives Paratherm NF an extended operational life when compared to straight paraffinic mineral oil-based fluids. When Paratherm NF eventually degrades, it inherently resists fouling caused by thermal cracking.

Paratherm NF is fully certified for use in food and beverage applications

Paratherm NF is adherent to all current accepted standards. Certified kosher and Halal and NSF HT-1 registered as a heat transfer fluid with incidental food contact, Paratherm NF is in the highest class of mineral-oil based fluids.

Paratherm NF is proven save, even after years of use

Durably non-toxic, independent toxicology testing and chemical analysis has experimentally proven used Paratherm NF fluid as safe as a new charge.

Paratherm NF® Heat Transfer Fluid

Food Grade Low Viscosity for Easy Start Up

Chemical Name Hydrotreated Mineral Oil
Appearance Water White Liquid
Odour Odourless
Maximum recommended film temperature  343°C (650°F)
Maximimum rec’d operating temp – fired heaters  316°C (600°F)
Maximimum rec’d operating temp – all others  332°C (630°F)
Minimum operating temperature 20 mPa-s (20 cPs)  36°C (97°F)
Minimum start-up temp 300 mPa-s (300 cPs)  -4°C (24°F)
Viscosity @ 15.5°C/60°F mm2/sec (sS t)  73
Density at 15.5°C/60°F kg/m3 (lb/gal )  887 (7.4)
Flash Point Pensky-Martens Closed Cup (D93) > 149°C/300°F
Boiling Point (101 kPa/14.7 psia) >371°C/700°F
Vapour Pressure @ max operating temp kPa (psia) 17 (2.5)
%Volume expansion over recommended operating temperature per 100°C (°F) 9.9 (5.5)
Average Molecular Weight 340
Dielectric Breakdown Voltage kV, 0.1″ gap (D1816-04) 34.37
Dielectric Constant (D924-04) 1KHz 2.183
Dissipation Factor (D924-04) 1KHz 0.000003
Volume Resistivity at 100V (?-cm) D257-07 3.4 X 1014
Heat of Combustion (approximate) kJ/kg (BTU/lb) 46,300 (20,000)
Heat of Vaporization (approximate) kJ/kg (BTU/lb) 210 (91)

Paratherm Heat Transfer Fluids

Critical Temperature, Tc(Calculated) Units HR™ NF© HE© OR© MR™ LR™ CR™
ºR 1465 1453 1580 1524 1358 1174 1168
ºF 1005 993 1120 1064 899 714 709
K 814 807 878 847 755 652 649
Critical Pressure, Pc(Calculated) Units HR™ NF© HE© OR© MR™ LR™ CR™
ATM 18.7 11.1 26.5 13.3 12.9 10.7 28.6
PSIA 274 163 389 196 190 157 421
Critical Volume, Vc(Calculated) Units HR™ NF© HE© OR© MR™ LR™ CR™
cm3/g-mole 816 1579 720 1380 987 1327 493
ft3/lb 0.037 0.072 0.033 0.063 0.045 0.06 0.023
Heat of Vaporization,DH vap Units HR™ NF© HE© OR© MR™ LR™ CR™
BTU/lb 110 91 77 93 115 113 148
Molecular Weight avg Units HR™ NF© HE© OR© MR™ LR™ CR™
MW 239 350 445 360 230 160 133


k=Cp/Cv = 1.01
C’ = 316.5
R = 82.06 cm3*atm/mol*K
Fb =


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