出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/08/03 11:05 UTC 版)
Stearic acid (first syllable pronounced either steer or stair) is the saturated fatty acid with an 18 carbon chain and has the IUPAC name octadecanoic acid. It is a waxy solid, and its chemical formula is C18H36O2, or CH3(CH2)16COOH. Its name comes from the Greek word στέαρ ("stéar"; genitive: "stéatos"), which means tallow. The salts and esters of stearic acid are called stearates.