Products: Glycols

Freez-Kontr'l^®

A complete heat transfer fluid and anti-freeze based upon non-toxic propylene glycol. It is formulated to provide corrosion protection and freeze protection for chilled water, hydronic and other closed systems. Safe to use where contact with potable water is possible.

Material Compatibility

Standard system materials of construction can be used with Freez-Kontr'l solutions. Steel, cast iron, copper, brass, bronze, solder and most plastic piping materials are all generally acceptable. Freez-Kontr'l solutions can also be used with aluminum at temperatures below 150°F. At temperatures about 150°F, use of aluminum is not recommended because the inhibitors will not fully protect aluminum components in the system at such elevated temperatures. Galvanized steel is not recommended because the zinc will react with the inhibitor package, and result in the removal of the protective zinc coating, particularly above 100°F. Precipitation can also lead to localized corrosion.

Centrifugal pumps are commonly used with solutions of Freez-Kontr'l, although reciprocating pumps are necessary where fluids must be pumped at high head pressures. Pumps can be made by ordinary steel or ductile iron because Freez-Kontr'l is inhibited.

Piping, valves and fittings can also be made of ordinary steel or ductile iron. Use of gray iron components is not recommended.

Typically, the same types of pump packing or mechanical seals used for water may be used with solutions of Freez-Kontr'l. Packing and seal manufacturers should be consulted for materials appropriate to your application and operating temperature.

Solutions of Freez-Kontr'l are compatible with most plastics and elastomers. Generally, any material that can be used with uninhibited glycol can be used with Freez-Kontr'l. Before using a particular elastomer, however, check with the manufacturer to determine the suitability of the material with propylene glycol over the anticipated temperature and pressure ranges.

If the use of coatings is desired, several options are available. Suitable coatings include novolac-based vinyl ester resins (e.g., Derakane 470-36 vinyl ester baked resin), high-bake phenolic resins, polypropylene, and polyvinylidine fluoride. To ensure that the coating is suitable for a particular application and temperature, the coating manufacturer should be consulted.

Specific information regarding roofing materials is not available. If the material is compatible with propylene glycol then it would not be affected by Freez-Kontr'l.

Source: Dow Chemical Company - System Design Considerations - inhibited propylene glycol.

Packaging

Product Literature Downloads:

MSDS Information
Glycol Family - Flyer
Freez-Kontr'l - Product Bulletin

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