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Polyethylene glycol (PEG) has strong water absorption and can absorb moisture from the air under normal temperature conditions. The liquid can be miscible with water in any proportion. When the temperature rises, any fraction of solid polyethylene glycol will be It can be miscible with water in any proportion. When the temperature reaches 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 nonionic polymer that is stable under normal conditions and can oxidize with oxygen in the air at temperatures of 120°C or higher. It is protected by inert gases such as carbon dioxide or nitrogen. There is no change at 200~240℃. When it rises to about 300℃, the molecular links break and degrade.

It has excellent lubricity, moisturizing, dispersion and adhesion. It can be used as antistatic agent and softener in cosmetics, pharmaceuticals, chemical fibers, rubber, plastics, papermaking, paints, electroplating, pesticides, metal processing and food. It has a wide range of applications in processing and other industries.

PEG is highly water-soluble and does not hydrolyze, so it is widely used as a water-soluble base for viscosity adjustment. The solubility of PEG in water is not affected by the presence of electrolytes. It is soluble not only in hard water and salt water solutions, but also in acids and bases (except in very high concentrations).

Polyethylene glycol is a white, odorless, tasteless waxy solid or fine particles. It has good chemical stability and does not react with acids, alkalis, salts, etc. At the same time, it has good water solubility and can be soluble in many organic solvents, but insoluble in aliphatic hydrocarbons and ether. In addition, the viscosity of polyethylene glycol increases with the increase of molecular weight, and its solution has excellent lubricity and moisturizing properties.

Polyethylene glycol series products are non-toxic, non-irritating, slightly bitter in taste, have good water solubility, and have good compatibility with many organic components.

PEG has good water solubility and can be dissolved in a variety of solvents. It can disperse drugs and prevent aggregation, so it can be used as a solid dispersant for drugs, such as laxatives (PEG4000 powder).