Cupcakes with pink icing, which contains propylene glycol

What is Propylene Glycol?

Propylene Glycol (C3H8O2) is a synthetic organic compound that absorbs water. Chemically recognised as a diol because of its 2 hydroxyl (-OH) groups, it is a liquid alcohol that finds use in a range of applications. Properties Propylene glycol (PG) is extremely hygroscopic, which is why it used as a humectant in pharmaceutical formulations, food products and cosmetics. It is [...]

Car engine

Five Uses of Antifreeze

Antifreeze is an additive used to decrease the freezing point – and increase the boiling point – of any water-based liquid. Antifreeze is made using any one of four main agents mixed with water: methanol, glycerol, ethylene glycol and propylene glycol, and each of these agents can be put to different use. You probably know it best for its [...]

A person dropping ointment into the palm of their hand

What is Polyethylene Glycol?

Polyethylene glycol (PEG) is a polyether compound that has a variety of uses and appearances depending on its molecular weight. Polyethylene Glycol is made by polymerising ethylene glycol, the main ingredient in antifreeze solutions, and has a strong presence in the medical industry. How is PEG Made? Like most polyethers, polyethylene glycol is made by polymerising (combining with) monomers. It [...]

Several cars parked in a row

What is Antifreeze?

Antifreeze is an additive which can be used to lower the freezing point – and also raise the boiling point – of any liquid that is water-based. One common example is from the automotive industry where antifreeze, in the form of ethylene glycol, is added to water as the engine coolant in vehicles and prevents the engine freezing in [...]

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