Methanol is added to ethanol produced for industrial use to render it unfit for consumption. This prevents the misuse of industrial ethanol for drinking purposes.
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Methanol is added to industrial ethanol primarily to denature it, making it unsuitable for human consumption. This denatured ethanol is used in various industrial applications, such as manufacturing, cleaning, and fuel production. Denaturing prevents the diversion of industrial ethanol for recreational or beverage purposes, as methanol renders the mixture toxic and unpalatable. The addition of methanol helps ensure regulatory compliance and safety by discouraging unintended or unauthorized consumption. This practice is particularly important for ethanol intended for industrial and non-beverage uses, where its purity and suitability for human consumption are not required.