タイトルまたは説明

Monopropylene glycol (also known as propylene glycol, PG, propan1, 2diol and MPG) is a clear, colourless and viscous liquid with a characteristic odour and has the formula C3H8O2. This solvent is soluble in water and holds hygroscopic properties, meaning it can attract hard water molecules. 

It is used across a wide range of industries as it has low toxicity, coupled with a freezing point which is depressed upon mixing with water.