Polyethylene glycol (PEG) is the general term of glycol polymers, including PEG300, PEG400, PEG600,PEG1000, PEG4000, PEG6000, PEG10000, PEG20000 (PEG20M), etc. With the increase of average molecular weight, the physical state of PEG changes from liquid to paste or wax solid at room temperature. All kinds of PEG have good water solubility, organic solvent solubility and thermal stability, and are non-toxic without stimulation, which can be used in medicine, cosmetics, food, chemical industry, electroplating, rubber and other industries.

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