Unifrost is a fully formulated heat transfer fluid containing
Propylene Glycol, a USP/Food Grade inhibitor and an additive
package. Unifrost contains 96.0%
propylene glycol and 4% inhibitors, other performance-enhancing
additives and deionized water.
It controls corrosion of metals, helps prevent scaling
and fouling of heat tranfer surfaces, and buffers the pH to
maintain it in the optimum operating range.
- Inhibitor system is food grade phosphate based.
- Functional equivilant to Dowfrost, Ucarfreeze, Jeffcool P-200 and can be mixed with these products with no adverse effects.
- Stable in water hardness up to 350 ppm
- Operating range of -50 degrees F to plus 325 degrees F.
Unifrost can be used in the following applications:
- HVACM system freeze/burst/corrosion protection.
- Recreational vehicle antifreeze.
- Process colling/heating.
- Solar heating.
- Refrigeration warehouse floor heating.
- Thermal energy storage.
- Ice skating rinks.
- Sidewalk and playing field subsurface heating.
- Cold room dehumidity.
- Computer colling systems.
- Water quality requirements
- Controls corrosion of metals.
Helps prevent scaling and fouling of of heat transfer services.
Buffers the pH to maintain it in the optimum operating range.
Water Quality Requirements
It is recommended to use deionized water for dilution. However,
tap water, well water, or city water may be used when it meets the
quality standards. Unifrost contains ingredients that help prevent
water hardness compounds, such as calcium and magnesium carbonates and
sulfates, from reacting with the inhibitor/additive package ingredients
to form precipitates, which can be reduce corrosion protection capabilities
and can form corrosion-promoting and heat transfer limiting deposits.
However, it is still recommended that water with no more than 350ppm
hardness be used to dilute Unifrost concentrate or be used as make up water.
Chlorides and sulfates are also usually present in municipal water sources.
Both should be limited to concentrations no greater that 50ppm.
Heat Transfer Graph
Click on graph to view larger size.
Unifrost meets or exceeds the requirements of the following standards:
- Corrosion in glassware of steel, cast iron, aluminum, copper, brass and solder
[ASTM D 1384].
- Water pump cavitation erosion/corrosion test [ASTM D 2809].
- Foaming tendency test [ASTM D 1881].
- Aluminum corrosion at heat transfer surfaces [ASTM D 4340].
- Simulated service metal coupon corrosion test [ASTM D 2570].
- Automotive and light duty antifreeze concentrate propylene glycol based [ASTM D 5216].
- Glycol based engine coolant for automobile and light duty service [ASTM D 3306].