Propylene glycol is a colorless and odorless organic compound, characterized by its hygroscopicity, solubility, and stability. It can dissolve various substances, including water and many organic solvents.

In terms of usage, propylene glycol is widely used in cosmetics, food additives, and industrial fields. In cosmetics, it serves as a moisturizer and solvent to help maintain product texture and extend shelf life. In the food industry, it is used to increase the moisture and stability of food. In addition, it is also used as an antifreeze and lubricant, as well as a solvent in textiles and printing inks.

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