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Antifreeze Comparison Chart
|Product Name||Oral Toxicity||Corrosion Inhibitors||Operating Range||Color|
|Ethylene Glycol||DOWTHERM SR-1||Moderate||Yes||-60F to 250F
(-51C to 121C)
|Food Grade Propylene Glycol||DOWFROST||Lowest - FDA Cleared Safe
for Accidental Ingestion
|Yes, but less effective since ingredients are food safe||-50F to 250F
(-46C to 121C)
|Colorless / Water White|
|Propylene Glycol||DOWFROST HD||Low||Yes||-50F to 325F
(-46C to 163C)
|Bright Yellow / Green|
Summary (All Ethylene Glycol Properties Listed on Product Pages, See Below)
DOWTHERM SR-1™ ethylene glycol heat transfer fluid includes a specially designed package of industrial corrosion inhibitors. Dow ethylene glycol antifreeze solutions have an operating temperature range of -60°F to 250°F (-51°C to 121°C), and the glycol fluid is dyed fluorescent pink to aid in leak detection.
Ethylene glycol-based fluids are less viscous than propylene glycols. Therefore, they generally provide superior heat transfer efficiency and better low temperature performance. However, in applications where toxicity is a concern, propylene glycols such as DOWFROST HD and Food Grade DOWFROST should be used.