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Heat Transfer Fluids
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Propylene Glycol
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QC Equivalents
QC-1
QC-35
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Welcome to Chemical.net's Section of Glycols, Coolants and Heat Transfer Fluids.

Here we give you information so that you can make the best choice to fit your individual needs.

Please click the links below for more information on each:

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bullet Dowtherm / Dowtherm SR-1 Heat Transfer Fluid
bulletDowfrost Heat Transfer Fluid
bulletQuaker City Chemicals Brand QC-35 and QC-1 Generic Heat Transfer Fluid Equivalents
bullet Ucartherm Heat Transfer Fluid
bulletPropylene Glycol for Food Systems
bulletEthylene Glycol with Inhibitors
bulletGlycerine for Wet Sprinkler Systems

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Comparative Guide to Propylene Glycol Hydronic Fluids*

Manufacturer Quaker City Chemicals Dow Chemical Formerly
Union Carbide		 Arco Chemical
Product Name QC-35 Dowfrost Ucar Foodfreeze 35 Chillsafe
Composition % by Weight:        
Propylene Glycol 95.5 95.5 95.5 95.5
Corrosion Inhibitors 4.5 4.5 4.5 4.5
Water, Anti-Foam, and Dye        
Color Orange Colorless Colorless Colorless
Freeze Protection:
40% V/V/ Aqueous Solution		 -8 -8 -8 -8
Specific Gravity 60/60°F 1.05 - 1.06 1.05 - 1.06 1.05 - 1.06 1.05 - 1.06
pH of 50% Solution 9.0 - 10.0 9.0 - 10.0 9.0 - 10.0 9.0 - 10.0
Reserve Alkalinity Minimum 12.0 ML 10.6 ML 11.6 ML 9.8ML
Thermal Conductivity: BTU / (HR) (ft2) (F/1-1)
50% Solution @ 20°F)		 0.22 0.22 0.22 0.22
Specific Heat BTU / (LB) (°F)
 50 % Solutions @ 20°F		 .84 .85 .88 .84
Viscosity  (Centipoises)
(50% Solution @ 20°F)		 23 20 28 18
*Data Taken from Producer Literature
 
 
Dowtherm News and Information


Chemical.net introduces an exciting new Heat Transfer Fluid: QC Eco-Green Heat Transfer Fluid. Read more Here

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