丙二醇可以指：

• 1,2-丙二醇
• 1,3-丙二醇

• 1,2-丙二醇

• 1,3-丙二醇

Propanediol may refer to either of three isomeric organic chemical compounds:

• 1,2-Propanediol (Propylene glycol)
• 2,2-Propanediol (an geminal diol)
• 1,3-Propanediol (Trimethylene glycol)