Don't You Know Enough about PEG?

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 other industries have a very 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.

PEG has good hygroscopic property, bonding property and lubricity. Non-toxic, non-irritating, soluble in water, ethanol and a variety of organic solvents. Stable to heat, acid and alkali, and does not work with many chemicals.

Polyethylene glycol PEG has a strong water absorption, can absorb water from the air under normal temperature conditions, liquid can be miscible with water in any proportion, when the temperature rises, any grade of solid polyethylene glycol can be miscible with water in any proportion, when the temperature is high to the boiling point of water, the polymer will precipitate out, precipitation temperature depends on the molecular weight and concentration of the polymer.

Polyethylene glycol (PEG) is a non-ionic polymer that is stable under normal conditions, can oxidize oxygen in the air at 120 ° C or higher temperatures, protected by inert gases such as carbon dioxide or nitrogen, does not change at 200~240 ° C, when it rises to about 300 ° C, the molecular chain is broken and degraded.

Polyethylene glycol PEG can be divided into several series such as pharmaceutical grade, cosmetic grade and industrial grade according to the purity difference. Polyethylene glycol is widely used in the production of pharmaceutical, feed, personal care products, chemical and other industries. It is used as a substrate in the production of medicine and cosmetics industry, plays the role of adjusting viscosity and melting point, and is used for pharmaceutical pastes and medicines. Used as lubricant and coolant in rubber and metal processing industry to enhance grinding effect and enhance the luster of metal surface; Used as dispersant and emulsifier in pesticide and pigment industry production; Used as antistatic agent and lubricant in textile industry; It is used as a wetting agent in the paper and pesticide industries. In the daily chemical industry, it is used as a moisturizing agent, inorganic salt solutizer, viscosity regulator, etc.