(1)水解将油脂和氢氧化纳水溶液反应,可水解 生成甘油和高级脂肪酸。例如: CH2OCCI7H33 C17H33 COONa CH,OH CHOCCISH31+ 3NaOH CHOH 15H3I COONa CHOH CH2OCC17H33 C17H3sCOOH 皂化值:工业上把1g油脂完全皂化所需的氢氧化钾的质量 (单位:mg)称为皂化值