Definition of stearic acid in English:
stearic acid
nounstɪˈarɪkˈstɪərɪkˌstirik ˈasəd
Chemistry A solid saturated fatty acid obtained from animal or vegetable fats.
Chemical formula: CH₃(CH₂)₁₆COOH
Example sentencesExamples
- Like all fatty acids stearic acid is insoluble in water, but is soluble in ether and hot alcohol.
- The most common animal fat is tristearin, which is composed of glycerol and three stearic acid molecules.
- Further improvements were made by substituting short-chain dicarboxylic acids for the surfactant stearic acid used to prevent agglomeration of the silver flakes.
- Both species exhibit low proportions of polyunsaturated fatty acids and high proportions of oleic and stearic acids characteristic of carnivorous and insectivorous species.
- Many shampoos are based on lauric, palmitic, and stearic acids, which have long chains of 12, 16, and 18 carbon atoms, respectively.
Origin
Mid 19th century: stearic from French stéarique, from Greek stear 'tallow'.