Is it necessary to provide heat tracing and insulation for a 60% methanol solution in outdoor environments in the north?
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Is it necessary to provide heat tracing and insulation for a 60% methanol solution in outdoor environments in the north? Will it freeze?
Here’s the answer first: The freezing point of a 60% methanol aqueous solution is below -65°C, so heating for anti-freezing is generally not necessary except in extremely cold regions abroad. A bit more information: Similar to ethylene glycol antifreeze, which uses water to lower its freezing point, aqueous solutions of methanol at high concentrations have a freezing point even lower than that of pure methanol without water (freezing point –97°C), reaching levels below –110°C. Therefore, a methanol solution with water added is commonly used as a heating gas medium for ethylene at low temperatures of -104 °C.