I dont know about the knowledge of polyethylene glycol 4000 manufacturers

Polyethylene glycol (PEG) is prepared by the gradual addition reaction of ethylene oxide with water or glycol. Its raw material is mainly from petroleum products. Polyethylene glycol (PEG) is a polymer of ethylene oxide and water. It is a white paraffin like flake or powder solid, odorless or with weak odor. It is non-toxic, non irritant, has good water solubility, and has good solubility with many organic components. They are widely used in cosmetics, pharmacy, chemical fiber, rubber, plastic, paper making, paint, electroplating, pesticide, metal processing and food processing industries.

With the increase of polymerization degree, the physical appearance and properties of PEG change gradually. The peg with relative molecular weight of 200-600 is liquid at room temperature, and the peg with relative molecular weight of more than 600 becomes semi-solid gradually. With the increase of molecular weight, from colorless and odorless viscous liquid to waxy solid, its moisture absorption capacity decreases correspondingly. It has the chemical properties of alcohol and can react with fatty acids to form esters. Soluble in water, ethanol and a variety of organic solvents. It is stable to heat, acid and alkali, and does not work with many chemicals. It has good moisture absorption, adhesion and lubricity. Non toxic, non irritating. It is harmless to people and animals

polyethylene glycol

Polyethylene glycol PEG has a strong water absorption ability. It can absorb water from the air under normal temperature. The liquid can be mixed with water in any proportion. When the temperature rises, the solid polyethylene glycol of any grade can be mixed with water in any proportion. When the temperature is high to the boiling point of water, the polymer will precipitate. The precipitation temperature depends on the molecular weight and concentration of the polymer. Polyethylene glycol (PEG) is a non-ionic polymer, which is stable under normal conditions. It can oxidize with oxygen in the air at 120 ℃ or higher. Under the protection of carbon dioxide or nitrogen and other inert gases, it does not change at 200 ~ 240 ℃. When it rises to about 300 ℃, the molecular chain breaks and degrades.

Peg can be divided into pharmaceutical grade, cosmetic grade, food grade and industrial grade according to the purity difference. Polyethylene glycol is widely used in food, pharmaceutical, feed, personal care products, chemical and other industries. It is used as a matrix in the production of medicine and cosmetics industry to adjust the viscosity and melting point and to make ointment and medicine; as a lubricant and coolant in the rubber and metal processing industry to enhance the grinding effect and the luster of metal surface; as a dispersant and emulsifier in the production of pesticide and pigment industry; as an antistatic agent and lubricant in the textile industry; and It is used as wetting agent in papermaking and pesticide industry, humectant, inorganic salt solubilizer and viscosity regulator in daily chemical industry, etc.

Polyethylene glycol is non-toxic, non irritant, and has excellent water solubility, solubility, lubricity, adhesion and thermal stability. Therefore, it is widely used as lubricant, dispersant, adhesive and type agent, as the matrix of ointment and suppository, as the carrier of dropping pill and tablet, as the solvent of molding agent and injection in medicine, veterinary medicine and cosmetics industry.