Methanol Freeze Protected Heat Transfer Liquids
Freezing and flash points for methanol or methyl based heat-transfer fluids or brines.
Freezing Point of Methanol based Water Solutions
| Methanol Concentration (%) | by mass | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| by volume | 0 | 13 | 24 | 35 | 46 | 56 | 66 | 75 | 83 | 92 | 100 | |
| Freezing points | oF | 32 | 20 | 0 | -15 | -40 | -65 | -95 | -115 | -125 | -130 | -144 |
| oC | 0 | -7 | -18 | -26 | -40 | -54 | -71 | -82 | -87 | -90 | -98 |
Flash Points of Methanol based Water Solutions
The flash point of a chemical is the lowest temperature where it will evaporate enough fluid to form a combustible concentration of gas. The flash point is an indication of how easy a chemical may burn.
| Methanol Concentration (%) | by mass | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| by volume | 0 | 13 | 24 | 35 | 46 | 56 | 66 | 75 | 83 | 92 | 100 | |
| Flash Points | oF | - | 130 | 110 | 95 | 85 | 75 | 70 | 60 | 54 | 54 | 54 |
| oC | - | 54 | 43 | 35 | 29 | 24 | 21 | 16 | 12 | 12 | 12 |
Warning
- HIGH flammability if pure
- HIGH toxicity
Alternatives to Methanol based Water Solutions
- ethanol based water solutions
- ethylene glycol based water solutions
- propylene glycol based water solutions
Physical Properties of Methanol
- Molecular Weight : 32.04
- Boiling Point : 64.7 oC
- Melting Point : -97.8 oC
- Flash Point : 12 oC (54 oF) closed cup
- Auto ignition Temperature : 878 oF
- Vapor Pressure : 92 mm Hg at 20 oC
- Density/Specific Gravity : 0.7915 at 20/4 oC (water = 1)
- Vapor Density : 1.11 (air = 1)
