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A formulation of propylene glycol and a specially designed package of industrial corrosion inhibitors. The fluid is dyed fluorescent yellow to aid in leak detection.

Not approved by the USDA or FDA for food use, and is not suitable for food or beverage application.




Product Overview

DOWFROST™ HD inhibited propylene glycol (PG) is comprised of about 94% PG and 6% corrosion inhibitors. The lower PG content in DOWROST™ HD allows for additional corrosion inhibitors including some which are not approved by FDA as direct food additives.  These additional components do not compromise toxicity fluid and provide an enhanced level of corrosion protection which is unsurpassed in the industry. DOWFROST™ HD has a fluorescent yellow color and is capable of operating at higher temperatures than regular DOWFROST™: from 0 F to 325 F.  DOWFROST™ HD is intended for low toxicity, non-food processing applications and provides freeze protection down to -60 F.

Dowfrost™ HD is offered is various concentrations and package sizes.

Product Specifications

Color: Green / Yellow
Propylene glycol-based fluid
Primary Chemistry: Propylene glycol 

Features & Benefits

Propylene glycol-based fluid (94%)
Fluorescent yellow
Increased concentration of inhibitors
Not USDA/FDA approved
industrial / commercial version of DOWFROST
Operating range:
0 to 325° F for heat transfer
-60° F for burst protection


Heating, Ventilation & Air Conditioning (HVAC)
Chill water & hydronic heating loops
Geothermal (ground source heat pumps)
Snow melt & Turf heating systems
Solar hot water heating
Fire water sprinkler systems
Ice skating rinks
Cold storage, refrigerated warehouses & supermarkets (secondary loop)
Thermal Energy Storage (TES)

Related Products

DOWFROST™ Glycol Thermal Fluids

Dowfrost™ inhibited propylene glycol heat transfer fluids provide years of reliable corrosion protection in demanding applications, such as fermentation cooling, immersion freezing, HVAC, food and pharmaceutical applications, where propylene glycol solutions are preferred or required.

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