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antifreeze

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antifreeze

Substance added to a water-cooling system (for example, that of a car) to prevent it freezing in cold weather.

The most common types of antifreeze contain the chemical ethylene glycol, or (HOCH2CH2OH), an alcohol with a freezing point of about −15°C/5°F.

The addition of this chemical depresses the freezing point of water significantly. A solution containing 33.5% by volume of ethylene glycol will not freeze until about −20°C/−4°F. A 50% solution will not freeze until −35°C/−31°F.



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Hunt semi loaded with 15 pallets of motor oil and 12 pallets of antifreeze when he got a flat and lost control of the truck, said California Highway Patrol Officer Wendy Hahn.
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