If you clean your bathroom with Lysol Tub and Tile cleaner, the main ingredient is a quat salt which consists of a nitrogen with 2 long chain (12-14
carbon atoms) alkyl groups, and two methyl groups (can also be ethyl or benzyls, but harder to make those). The alkyl groups come from stearic acid
(from beef fat, lard, grease, etc) or similar sources, which is why C12-14 is the most common one, as it is the main constituent of most animal fats.
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