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丙二醇別名是丙烯甘醇, 1,2丙二醇。丙二醇在常態下為無色粘稠液體，近乎無味，細聞微甜。丙二醇可的應用很廣泛，能夠用作不飽和聚酯樹脂的原料，在化妝品、牙膏和香皂中可與甘油或山梨醇配合用作潤濕劑。在染發劑中用作調濕、勻發劑，也用作防凍劑，還用于玻璃紙、增塑劑和制藥工業。

Propylene glycol, also known as propylene glycol, is 1,2-propanediol. Propylene glycol is a colorless viscous liquid under normal conditions, almost odorless, and slightly sweet upon closer inspection. Propylene glycol has a wide range of applications and can be used as a raw material for unsaturated polyester resins. It can be used in cosmetics, toothpaste, and soap as a wetting agent in combination with glycerol or sorbitol. It is used as a moisture regulator and hair stabilizer in hair dyes, as well as an antifreeze. It is also used in glass paper, plasticizers, and the pharmaceutical industry.

丙二醇是不飽和聚酯、環氧樹脂、聚氨酯樹脂、增塑劑、表面活性劑的重要原料，這方面的用量約占丙二醇總消費量的45%左右，這種不飽和聚酯大量用于表面涂料和增強塑料。

Propylene glycol is an important raw material for unsaturated polyester, epoxy resin, polyurethane resin, plasticizer, and surfactant, accounting for about 45% of the total consumption of propylene glycol. This unsaturated polyester is widely used in surface coatings and reinforced plastics.

丙二醇的粘性和吸濕性好，在食品、醫藥和化妝品工業中廣泛用作吸濕劑、抗凍劑、潤滑劑和溶劑。在食品工業中，丙二醇和脂肪酸反應生成丙二醇脂肪酸酯，主要用作食品乳化劑；丙二醇是調味品和色素的優良溶劑。

Propylene glycol has good viscosity and moisture absorption, and is widely used as a hygroscopic agent, antifreeze, lubricant, and solvent in the food, pharmaceutical, and cosmetics industries. In the food industry, propylene glycol reacts with fatty acids to form propylene glycol fatty acid esters, which are mainly used as food emulsifiers; Propylene glycol is an excellent solvent for seasoning and coloring.

由于毒性低，在食品工業中用作香料、食用色素的溶劑。丙二醇在醫藥工業中常用作制造各類軟膏、油膏的溶劑、軟化劑和賦形劑等，在醫藥工業中用作調合劑、防腐劑、軟膏、維生素、青霉素等的溶劑。由于丙二醇與各類香料具有較好互溶性，因而也用作化妝品的溶劑和軟化劑等等。

Due to its low toxicity, it is used as a solvent for spices and food coloring in the food industry. Propylene glycol is commonly used in the pharmaceutical industry as a solvent, softener, and excipient in the manufacture of various ointments and ointments. It is also used as a solvent for adjuvants, preservatives, ointments, vitamins, penicillin, and other substances in the pharmaceutical industry. Due to its good solubility with various spices, propylene glycol is also used as a solvent and softener in cosmetics.

丙二醇還用作煙草增濕劑、防霉劑，食品加工設備潤滑油和食品標記油墨的溶劑。丙二醇的水溶液是有效的抗凍劑。也用作煙草潤濕劑、防霉劑、水果催熟防腐劑、防凍液和熱載體等。

Propylene glycol is also used as a humidifier and mold inhibitor for tobacco, as well as a solvent for lubricating oil in food processing equipment and food labeling inks. The aqueous solution of propylene glycol is an effective antifreeze. It is also used as a tobacco wetting agent, mold inhibitor, fruit ripening preservative, antifreeze, and heat carrier.