二丙二醇(英文名称Dipropylene glycol)又名双丙甘醇,一缩二丙二醇,缩水二丙二醇,4氧-2,6-己二醇(4-Oxaheptane-2,6-diol),1,1,-氧-二-2-丙醇(1,1'-Oxydi-2-propanol),2-羟丙基醚(2-Hydroxypropyl ether),2,2,-二羟基二丙醚(2,2'-Dihydroxydipropyl ethe),简称DPG。二丙二醇常温下是一种无嗅、无色、有甜味、水溶性和吸湿性液体。溶于水和甲基苯,可混溶于甲醇、乙醚,有着辛辣的甜味,无腐蚀性。对皮肤刺激性很小,毒性很低。遇明火、高热可燃。与空气可形成爆炸混合物。适用于香精香料和化妆品等对气味比较敏感的用途。分子式为C6H14O3。
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