Polyethylene glycol is short for PEG. Ethylene glycol is a high molecular compound formed by intermolecular dehydration condensation. Chemical formula HOCH2(CH2OCH2)nCH2OH. Where n is greater than 4. The average molecular weight of Chemicalbook is 200 ~ 7000. The number after the commercial PEG indicates the average molecular weight. For example, polyethylene glycol -400 means that the average molecular weight of the commodity polyethylene glycol is about 400.Colorless viscous liquid or white solid.Low toxicity! Soluble in water and many organic solvents, easily soluble in aromatic hydrocarbons, slightly soluble in aliphatic hydrocarbons.