MEMORANDUM
From:
To:
Subject: Calcium Chloride Best Purchase for Deicing
Enclosures: (1) Data Record
(2) Data Treatment
(3) Environment Impact Research
After hours of vigorous examination, we have come to the conclusion that calcium chloride (CaCl2) would be the best deicer to use on a naval base over sodium chloride (NaCl) and ethylene glycol (C2H6O2).
In order to melt ice, deicers lower the freezing point so that the ice melts at lower temperatures. CaCl2 has a freezing point depression of 5°C, whereas NaCl has only a 3°C depression, and ethylene glycol, 1.85°C. The more the freezing point can be lowered, the faster the ice will melt, and more effectively. The reason to look at this is due to the fact that NaCl decomposes around 20°F, whereas CaCl2 can withstand temperatures as low as -20°F. Therefore the freezing point depression of NaCl would have to be 40° to take the effect that CaCl2 may. Ethylene glycol barely lowers the freezing......
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