Polyethylene glycol PEG-200 can be used in pharmaceuticals. Polyethylene glycol with low molecular weight can be used as solvent, cosolvent, O/W emulsifier and stabilizer, used in the manufacture of cement suspension agent, emulsion, injection and so on. , can also be used as a water-soluble ointment base and suppository base. High molecular weight solid waxy polyethylene glycol is often used to improve the viscosity and solidification of low molecular weight liquid PEG, and to compensate for other drugs; For insoluble drugs in water, the product can be used as the carrier of solid dispersant to prepare tablets, pills, capsules, microcapsules and so on.

Peg-200 is an organic synthesis medium, but also a carrier requiring higher temperature, in the daily chemical industry as a humidant, inorganic solvent and viscosity regulator, in the textile industry as a softener and antistatic agent, used in papermaking and pesticide industry, is also the raw material of ester surfactant.