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Freezing Points of Propylene and Ethylene Glycol Solutions

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Question
I want to use ethylene glycol or propylene glycol as an anti-freeze. What are the freezing points of various aqueous solutions of these chemicals?
Answer
The freezing points of these glycol solutions can be found in the tables below:

Ethylene Glycol Solution (% by mass) 0 10 20 30 40 50 60
Freezing Point Temperature (°F) 32 23 14 2 -13 -36 -70
Freezing Point Temperature (°C) 0 -3 -8 -16 -25 -37 -55

Propylene Glycol Solution (% by mass) 0 10 20 30 40 50 60
Freezing Point Temperature (°F) 32 26 18 7 -8 -29 -55
Freezing Point Temperature (°C) 0 -3 -8 -14 -22 -34 -48

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Keywordsheat transfer cooling, 9402, 9403, U510, 6263, 5001, 5037, 9300

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