PEG refers to oligomers or polymers of ethylene oxide. Depending on the molecular weight, it can be a liquid or a low-melting solid.
Due to the influence of chain length, PEGs with different molecular weights often have different physical properties (such as viscosity) and different applications, but most PEGs have similar chemical properties. Low-molecular-weight polyethylene glycol usually refers to a relatively pure oligomer, which is more monodisperse; high-purity polyethylene glycol is crystalline, so X-rays can be used to determine its crystal structure.
PEG is a specialty solvent and surface-active agent.
Like used in lotions, creams, toothpaste or shapoo, soap, lipstick, conditioners and many home care and personal care detergents. and it can be used in the pharmaceutical industry for humansand animals.
Those with a relative molecular mass between 700-900 are semi-solid. Those with a relative molecular mass of 1000 and above are light white waxy solids or flakes of paraffin or fluid powder. Miscible in water, soluble in many organic solvents, such as alcohols, ketones, chloroform, glycerides and aromatic hydrocarbons, insoluble in ether and n-hexane. Its products combined with hydrophobic molecules can be used as nonionic surfactants. As the molecular weight increases, its water solubility, vapor pressure, water absorption, and solubility in organic solvents decrease accordingly, while its freezing point, relative density, flash point, and viscosity increase accordingly. Stable to heat, inert to many chemicals, not hydrolyzed.
In addition, polyethylene glycol is also a food additive, which is often used in the coating of candy and chocolate products. The dosage refers to GB 2760-2011. It can be used as coating agent in food. It can also be used in dispersants, carrier solvents, binders, plasticizers, coating agents, lubricants, and fragrance additives.
PEG200 or PEG300 can be used in the manufacture of paintballs. PEG400 is most widely used and is most suitable for making soft capsules. Since PEG400 is a liquid, it has wide compatibility with various solutions, and is a good solvent and thickener, and is widely used in liquid preparations, such as oral liquids. PEG is the material of choice when vegetable oil is not suitable as an active ingredient carrier. This is mainly because PEG is stable and not easy to deteriorate. In addition, it can also be mixed with high molecular weight (PEG) and its mixture has good solubility and good compatibility. PEG600 can be used as foam products
PEG1500 or PEG3350 are also commonly used in pharmaceutical and medical purposes
PEG4000, PEG6000, PEG8000 are used in tablets, capsules, film coatings, pills, suppositories, etc. Due to the plasticity of PEG and its ability to improve the ability of the tablet to release drugs during the tablet making process, high molecular weight PEG (PE4000, PE6000, PEG8000) is very useful as an adhesive for making tablets. PEG can make the surface of the tablet shiny and smooth, and at the same time less susceptible to damage. In addition, a small amount of high molecular weight PEG (PEG4000, PEG6000, PEG8000) can prevent the adhesion between sugar-coated tablets and bottles.
Synonms:
- PEG
- Polyglycol
- Polyehtylene Glycol
- Poly (ethylene oxide)
- Poly (Ethylene glycol)
- Polyoxy Ethylene
What are PEG applications?
| PEG200 PEG300 |
*Pharmaceutical *Cosmetics personal care *Detergents, Softeners *Toiletries *Papermaking *Synthetic Resins *Rubbers *Agrichemicals *Surfactants *PEG derivatives *Heat Reservoirs *Cold Insulators |
| PEG400 PEG600 PEG800 |
*Pharmaceutical *Cosmetics personal care *Textiles *Detergents, Softeners *Toiletries *Paper making *Synthetic Resins *Rubbers *Agrichemicals *Surfactants *PEG derivatives *Cold or heat insulating *adhesive *Plasticizing *Forming * Solubilizing *wetting |
| PEG1000 PEG1200 PEG1450 PEG1500 |
*Pharmaceutical *Cosmetics personal care *Textiles *Detergents, Softeners *Toiletries *Paper making *Softening *Synthetic Resins *Rubbers *Agrichemicals *Surfactants *PEG derivatives *Heat and cold insulating *Plasticizing |
| PEG2000 PEG3000 PEG3500 PEG4000 |
*Pharmaceutical *Cosmetics personal care *Textiles *Detergents, Softeners *Toiletries *Paper making *Softening *Synthetic Resins *Rubbers *Agrichemicals *Surfactants *PEG derivatives *Heat and cold insulating *Plasticizing *Solvent *Coating agent *Binder *lubricants |
| PEG6000 PEG8000 PEG10000 |
*Pharmaceutical *Cosmetics personal care *Textiles *Detergents, Softeners *Toiletries *Paper making *Softening *Synthetic Resins *Rubbers *Agrichemicals *Surfactants *PEG derivatives *Heat and cold insulating *Plasticizing |