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Paratherm HE®HEAT
TRANSFER
FLUID
High Flash & Fire Points, Thermally Stable

Typical Properties*
Physical Properties
Feedstock Paraffinic Hydrocarbon (Single Cut)
Appearance Transparent, Pale Yellow
Odor Faint (oily)
Optimum Use Range 150°F to 600°F (66°C to 316°C)
Flash Point (coc) ASTM D-92 440°F (227°C)
Fire Point (coc) ASTM D-92 500°F (260°C)
Atmospheric Boiling Point, 10% Fraction, ASTM D-1160  779°F (415°C)
Vapor Pressure, psia @
pix2.gif (333 bytes) 300°F 0.00039
pix2.gif (333 bytes) 350°F 0.00193
pix2.gif (333 bytes) 400°F 0.0097
pix2.gif (333 bytes) 450°F 0.0387
pix2.gif (333 bytes) 500°F 0.1350
pix2.gif (333 bytes) 550°F 0.3870
pix2.gif (333 bytes) 600°F 0.8700
Coefficient of Thermal Expansion** 0.000592/ °F
0.001066/ °C
Heat Of Vaporization (Calculated) 77.19 BTU/lb
Heat Of Combustion 19,550 BTU/lb
API Gravity ASTM D-287 31.7
Specific Gravity @ 15°C ASTM D-1298 0.8651
Density, lb/gal @ 60°F (16°C) 7.22
Viscosity: cSt @ 40°C ASTM D-445 40.25
Pour Point (Crystal Point) ASTM D-97 5°F (-15°C)
Pumpability: Centrifugal @ 2,000 centipoise, nominal 20°F (-7°C)
Color ASTM D-1500 1.0
Molecular Weight ASTM D-2502 445g/mole
Corrosivity (3hr Cu Strip @ 100°C) ASTM D-130 1A
Total Sulfur (Mass%) J-140 0.002
Total Acid Number (T.A.N.) ASTM D-664 0.01
Electrical Properties
Dielectric Strength @ 20°C, nominal >30 KV/cm
Optical Properties
Refractive Index ASTM D-1747 1.4722

*These are typical laboratory values, and are not guaranteed for all samples. 
**Note: Normal practice is to size the expansion tank so that it is 1/4 to 1/3 full when the system is cold, and 2/3 to 3/4 full when the system is at the maximum normal operating temperature. 

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whitespacer.gif HEAT TRANSFER FLUIDS

Paratherm HE...
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- Engineering Bulletin
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- Properties vs. Temp. (graphs)
- Thermal Prop. (English Units)
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