Propylene Glycol is used in glycol cooling units to help control the temperature of fermentation or beer dispensing. This Glycol is for food grade use – that is, it is safe to use in appliances used for storing/dispensing food and drink NOT for consumption. Dilute with water to the ratio specified in the instructions for your appliance.
| Glycol Volume % | Freezing Point (°C) | Specifc Gravity at 21°C |
| 0 | 0.0 | 1.000 |
| 10 | -3.3 | 1.006 |
| 20 | -7.8 | 1.015 |
| 30 | -13.3 | 1.024 |
| 32 | -14.1 | 1.025 |
| 34 | -15.6 | 1.026 |
| 36 | -17.3 | 1.028 |
| 38 | -19.1 | 1.030 |
| 40 | -21.1 | 1.031 |