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Glycerin, also known as glycerol (IUPAC name: propane-1,2,3-triol) is a non-toxic sugar alcohol used as an antifreeze in slushies or other frozen drinks. It is a viscous alcohol with a viscosity somewhere between maple syrup and golden syrup. It used to be used in car antifreeze before ethylene glycol was discovered, but was phased out because ethylene glycol had far superior antifreeze, antiboil, and heat-transfer properties compared to glycerin. While glycerin is non-toxic to adolescents and adults, it can be toxic to young children due to their bodies inability to deal with the substance, potentially resulting in hypoglycemia.
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