Poly(ethylene glycol) PEG 200-20000

The properties vary depending on the relative molecular weight, ranging from colorless and odorless viscous liquid to waxy solid. Those with a molecular weight of 200 to 600 are liquid at room temperature, and those with a molecular weight above 600 gradually become semi-solid. The properties also vary with the difference in average molecular weight.

From colorless and odorless viscous liquid to waxy solid. As the molecular weight increases, its moisture absorption capacity decreases accordingly. This product is soluble in water, ethanol and many other organic solvents. Low vapor pressure, stable to heat, acid and alkali.

Polyethylene glycol and polyethylene glycol fatty acid esters are widely used in the cosmetics and pharmaceutical industries. Because polyethylene glycol has many excellent properties: water solubility, non-volatility, physiological inertness, mildness, lubricity, and moisturizing, softness, and pleasant after-use feeling of the skin. Polyethylene glycol with different relative molecular weight fractions can be selected to change the viscosity, hygroscopicity and organizational structure of the product. Polyethylene glycol with low relative molecular weight (Mr<2000) is suitable for use as a wetting agent and consistency regulator for creams, lotions, toothpastes, shaving creams, etc. It is also suitable for hair care products that do not require cleaning. Gives hair a silky shine. Polyethylene glycol (Mr>2000) with high relative molecular weight is suitable for lipsticks, deodorant sticks, soaps, shaving soaps, foundations and beauty cosmetics, etc. In cleaning agents, polyethylene glycol is also used as a suspending agent and thickening agent.

Polyethylene glycol is widely used in a variety of pharmaceutical preparations, such as injectables, topical preparations, ophthalmic preparations, oral and rectal preparations. Solid levels of polyethylene glycol can be added to liquid polyethylene glycol to adjust the viscosity for topical ointments; polyethylene glycol mixtures can be used as suppository bases; aqueous polyethylene glycol solutions can be used as suspending agents or to adjust other The viscosity of the suspension medium; polyethylene glycol and other emulsifiers are used together to increase the stability of the emulsion.