Propylene glycol is a common ingredient used in various industries such as the food, pharmaceutical, and cosmetic industries. It is known for its moisturizing properties and ability to act as a solvent. However, there are other synonyms for this chemical compound, including 1,2-dihydroxypropane, methyl ethyl glycol, propane-1,2-diol, and PG. These synonyms are often used interchangeably, but it is important to note that they have the same chemical structure and properties as propylene glycol. By using these different synonyms, professionals can easily understand the intended meaning of the term based on the context in which they are used.