Diethylene glycol, also known as diethylene glycol, reacts with anhydrides to form esters. It reacts with alkyl sulfates or halogenated hydrocarbons to form ethers. It is mainly used as a gas dehydrating agent and extractant, and is also used as a lubricant and finishing agent for textiles. It is obtained by the reaction of Chemicalbook ethylene oxide with ethylene glycol. Diethylene glycol has been widely used in various cosmetics as a solvent, heat preservation agent, and viscosity control agent. It has a history of nearly 20 years of use in my country, and no problems have been found during this period.

Triethylene glycol is a kind of olorless, odorless, hygroscopic viscous liquid. Miscible with water and ethanol, slightly soluble in ether, and almost insoluble in petroleum ether.