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The characteristics and the role of polyethylene glycol 6000

2020-07-29 来源:亚科官网

 Polyethylene glycol (PEG) is a non-toxic, non-irritating inorganic hydrophilic polymer. The polymerization degree of commercially available polyethylene glycol is mainly 200, 300, 400, 600, 800, 1000, 1500, 2000, 3000, 4000 , 6000, 8000. Among them, polyethylene glycol 6000(PEG6000) is usually formed by polymerizing water or ethylene glycol with ethylene oxide under the action of alkaline earth metal catalysts. Its CAS number is 25322-68-3,and it is a widely used water-soluble polymer.

Characteristics of polyethylene glycol 6000

Polyethylene glycol 6000 is a white flake or powder with a melting point of 55~60℃. It is easily soluble in water, ethanol, acetone, chloroform, etc., but insoluble in petroleum ether, ether, ethylene glycol, simethicone, and liquid paraffin. , Vegetable oil, etc., the relative density at 100°C is 1.072~1.075, the pH of the solution is 4.0~7.0, and the dielectric constant is 3.6.

Polyethylene glycol 6000 itself has no physiological effect, good chemical stability, non-hydrolysis, heat resistance, non-corrosive, and can absorb some liquids. Its solution has high viscosity at low concentrations. In addition, it has good compatibility and water solubility, does not participate in the metabolism of the animal body, and has good compatibility. It has little irritation to the skin, mucous membranes and eyes, and is difficult to be absorbed by the gastrointestinal tract. It has low toxicity and can be safely used in the cosmetics industry and pharmaceutical industry.

The role of polyethylene glycol 6000

Polyethylene glycol 6000 is often used as an emulsifier in cosmetics. It has high viscosity and is an indispensable part of promoting the stability of emulsions. It plays an important role in the stability of emulsions. Polyethylene glycol 6000 is a commonly used pharmaceutical excipient in the pharmaceutical industry. In addition to being a surfactant, it is also commonly used as a base material and lubricant for ointments, emulsions, ointments, lotions and suppositories.

In addition, polyethylene glycol 6000 is also used as a finishing agent in the paper industry to increase the gloss and smoothness of paper; as an additive in the rubber industry, it increases the lubricity and plasticity of rubber products and reduces power consumption during processing. Extend the service life of rubber products. In metal processing, textile industry, pesticides, pigments and other industrial production, polyethylene glycol 6000 is also a very important additive.

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