四-乙二醇(TEG)是聚乙二醇的一种低聚物，是一种透明、无色、无味、低挥发性、易吸湿的液体，可溶于乙醇，极易溶于水 应用： 用于合成四甘醇甲基丙烯酸酯单体 TEG辉光放电等离子体沉积使表面抵抗蛋白质吸附和细胞附着 An oligomer of polyethylene glycol, tetra (ethylene glycol) (TEG) is a transparent, colorless, odorless, low volatility, hygroscopic liquid soluble in ethyl alcohol and very soluble in water. Application： Used for the synthesis of tetraethylene glycol metha acrylate monomer. Glow discharge plasma deposition of TEG renders surfaces resistant to protein adsorption and cellular attachment. Bis[2-(2-hydroxyethoxy)ethyl] Ether is a polyethylene glycol used in the synthesis of cross-linked polymers. Also used in the synthesis of well defined hydrogel network. Tetraethylene glycol is used as a solvent to dissolve water-insoluble compounds. It is employed as a nitrocellulose solvent, a plasticizer, a natural gas desiccant, a hydraulic fluid and in lacquers and coatings. Furthermore, it is used in the synthesis of tetraethylene glycol methacrylate monomer. It acts as a chemical intermediate and acts as a solvent for the manufacturing of inks and dyes. In addition, it serves as a coupling agent in the production of textile lubricants and formulations.