Glycerin (also glycerine or glycerol) entered English in 1838 from French glycérine, a term coined by the French chemist Michel-Eugène Chevreul in 1811. Chevreul derived the name from Greek glykeros (sweet), from glykys (sweet), because the substance he isolated from fats during soap-making had a distinctly sweet taste. The Greek root traces to PIE *dlk-u- (sweet), which also produced Latin dulcis (sweet, giving English dulcet and dulcimer).
The Greek root glykys has been extraordinarily productive in scientific terminology. Glucose (blood sugar), glycogen (the storage form of glucose in the body), glycol (a sweet-tasting antifreeze), and glycine (the simplest amino acid, named for its sweet taste) all derive from it. More surprisingly, licorice comes from Greek glykyrrhiza, literally 'sweet root' — the same glykys combined with rhiza (root). This family of 'sweet' words spans chemistry, biochemistry, and confectionery, united by the sensory experience
Glycerin itself was first observed by the Swedish chemist Carl Wilhelm Scheele in 1779, when he heated olive oil with litharge (lead oxide). Chevreul later characterized it more precisely during his groundbreaking research on fats and soap-making. The substance proved to be a three-carbon alcohol (a triol) present in all natural fats and oils as the backbone of triglyceride molecules. Every time fat is broken down
The most dramatic chapter in glycerin's history involves nitroglycerin, produced by treating glycerin with a mixture of nitric and sulfuric acids. Discovered by Ascanio Sobrero in 1847, nitroglycerin was a powerful but dangerously unstable explosive. Alfred Nobel's great innovation was stabilizing it by absorbing it into diatomaceous earth, creating dynamite in 1867. This invention made
In modern applications, glycerin is remarkably versatile. In food, it serves as a sweetener, humectant, and solvent. In pharmaceuticals, it forms the base for cough syrups and suppositories. In cosmetics, it moisturizes skin. In e-cigarettes, it produces visible vapor. The substance that Chevreul named for its sweetness has proven sweet in utility as well — a compound that contributes to human comfort in dozens