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) |
Fluorescent Pink |
| 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.
