These knowledge points of polyethylene glycol PEG are revealed in depth

Polyethylene glycol is a non-ionic water-soluble polymer with a capacitance-enhancing effect, and can be used in the cosmetics industry for oil-free makeup, shampoo, hair conditioner, sunscreen, etc. Polyethylene glycol is a polymer of ethylene oxide hydrolysate, non-toxic, non-irritating, widely used in various pharmaceutical preparations.

Polyethylene glycol PEG is prepared by the stepwise addition reaction of ethylene oxide with water or ethylene glycol as raw materials, and its raw materials mainly come from petroleum products. Polyethylene glycol PEG is a polymer of ethylene oxide and water. It is a white paraffin-like flake or powder solid that is odorless or has a weak odor. It is non-toxic, non-irritating, has good water solubility, and has good compatibility with many organic components. They have excellent lubricity, moisture, dispersion, adhesive, antistatic agent and softening agent, etc., in cosmetics, pharmaceuticals, chemical fiber, rubber, plastics, paper, paint, electroplating, pesticides, metal processing and food processing industries have a wide range of applications

With the increase of the degree of polymerization, the physical appearance and properties of PEG are gradually changed, the relative molecular weight of 200-600 is a liquid at room temperature, and the relative molecular weight of 600 is gradually turned into a semi-solid. With the increase of molecular weight, the change from colorless and odorless viscous liquid to waxy solid decreases its hygroscopic ability. It has the chemical properties of alcohol and can be esterified to form esters with fatty acids. Soluble in water, ethanol and many organic solvents. Stable to heat, acid and alkali, and does not work with many chemicals. It has good hygroscopicity, adhesion and lubricity.