KnowraPropylene glycolLinked fromLinked fromThe 7 pages that link to Propylene glycol, each with the reason it gives.All 7Broader topic 4Related 1Compared with 2GlycerolCompared with: It shares many applications with glycerol but has two hydroxyl groups rather than three.Diethylene glycolCompared with: It is commonly used where diethylene glycol's toxicity makes it unsuitable.