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Usually ethylene glycol, the same as the main ingredient in car anti-freeze. Answer Prior to take-off, airplanes are sprayed with a de-icing agent that melts any ice on the airplane and its wings but it will not re-freeze. Once in the air, many airplanes are equipped with electric heaters or devices that blow heated air over the leading edge of the wings and prevents wate from freezing on it.

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16y ago
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5mo ago

Deicing fluids are commonly used on airplanes to remove ice. These fluids contain a mixture of propylene glycol or ethylene glycol, along with other additives to enhance their effectiveness in melting ice and preventing it from reforming. The most common types of deicing fluids are Type I (used to remove ice) and Type IV (used to prevent ice formation).

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