Peg 200-10000 Poly (ethylene glycol) CAS No 25322-68-3 Polyethylene Glycol

The physical appearance and characteristics of PEG are changing slowly. The relative molecular weight of 200-600 is liquid at room temperature, and the relative molecular weight of 600 or more slowly becomes semi-solid. With the increase of molecular weight, the change from colorless and odorless liquid to crystalline solid state, its moisture absorption capacity decreases correspondingly. Polyethylene glycol according to the difference in purity can be divided into skin care products, food grade stainless steel and industrial production grade products. Polyethylene glycol (PEG) is widely used in pharmaceutical, feed and daily chemical industries as a matrix for creams and antacids, as a medium for dropping pills and tablets, as an organic solvent in forming agents and injections.