Diethylene glycol (DEG) is an organic compound with the formula (HOCH2CH2)2O. It is a colorless, practically odorless, poisonous, and hygroscopic liquid with a sweetish taste. It is miscible in water, alcohol, ether, acetone, and ethylene glycol. DEG is a widely used solvent. polyurethanes, and plasticizers.DEG is used as a building block in organic synthesis, e.g. of morpholine and 1,4-dioxane. It is a solvent for nitrocellulose, resins, dyes, oils, and other organic compounds. It is a humectant for tobacco, cork, printing ink, and glue. It is also a component in brake fluid, lubricants, wallpaper strippers, artificial fog and haze solutions, and heating/cooking fuel. In personal care products (e.g. skin cream and lotions, deodorants), DEG is often replaced by selected diethylene glycol ethers. A dilute solution of diethylene glycol can also be used as a cryoprotectant.

Application

1). Mainly used as solvent,such as the solvent of nitrocellulose,rubber,resin,grease,paint,medicine,etc.Also can be used as resin plasticizer,tobacco anti-drying agent,fiber lubriant and gas desiccant,etc. 

2). Mainly used for gas dehydrant and aromatics extraction solvent.Also used for cellulose nitrate,resin,such as grease,printing ink solvent,textile softener,finishing agent,and coumaric ketone and indene extracted from coal tar, etc.

3). Used for the preparation of plasticizer,also used as extracting agent,desiccant,heat preservation agent,softening agent and solvent,etc.A shrinkage of diethylene glycol is mainly used for natural gas dehydration and aromatics extraction,used as a solvent,ink adhesion and textile dyes are also used in rubber and resin plasticizers,polyester resin,fiberglass,urethane foam,the production of lubricating oil viscosity improver, and other products.

4). Used as gas dehydrant and aromatics extraction solvent,and also used as a textile lubricant,and finishing agent,softener and plasticizer,humidifying agent,sizing agent,nitro cellulose fiber,resin and grease solvent.

5.Used as a solvent,gas dehydrant,extraction solvent,water softener,liquid and gas chromatography is suitable for aqueous solution analysis,selective polyethylene glycol,used to analyze the content of oxygen compounds (especially alcohol),aniline,fatty amine, pyridine and quinoline.