Antifreeze (Glycol Based) is most often an ethylene glycol (CAS 107-21-1) solution with corrosion inhibitors and dye, a sweet-tasting, toxic liquid with a specific gravity of about 1.11 to 1.15. Glycol antifreeze is used as engine coolant and as a heat transfer fluid in HVAC chillers, geothermal and process cooling loops. Bulk antifreeze storage and used coolant collection tanks should be labeled and secured, since ethylene glycol is poisonous if swallowed. Use the compatibility ratings to choose the right tank resin, fittings and gaskets.
Polypropylene is the most economical tank material for Antifreeze (Glycol Based), rated Excellent. Nylon is also rated Good or better.
How Antifreeze (Glycol Based) works with the plastics used to make our storage tanks.
| Material | Rating |
|---|---|
| HDPE | |
| Polypropylene | |
| Nylon | |
| PVDF (Kynar®) |
How Antifreeze (Glycol Based) works with the plastics used for tank fittings.
| Material | Rating |
|---|---|
| HDPE | |
| PVC | |
| CPVC | |
| Polypropylene | |
| PVDF |
How Antifreeze (Glycol Based) works with gasket and O-ring materials.
| Material | Rating |
|---|---|
| Buna-N | |
| EPDM | |
| Viton® |
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