- Alternative name: propanoic acid; chemical formula: C2H5COOH.
- Two other simple carboxylic acids are propionic acid and butyric acid.
- Each population cage contained two standard 240-ml food bottles, each containing 50 ml of standard fly medium containing sucrose, corn meal, yeast, agar, benzoic acid, methyl paraben, and propionic acid.
- Such breads are almost always chock full of preservatives like sorbic acid and propionic acid, which help to ward off mold.
Mid 19th century: propionic from French propionique, from Greek pro 'before' + piōn 'fat', it being the first or lowest molecular-weight member of the fatty acid series to form fats.
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Syllabification: pro·pi·on·ic ac·id
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