Poly(ethylene glycol)
average Mv ~300,000,powder
science Other reagents with same CAS 25322-68-3
blur_circular Chemical Specifications
description Product Description
Poly(ethylene glycol) (PEG) with an average molecular weight of ~300,000 is a high molecular weight, powdered polymer valued for its versatility in specialized applications. In pharmaceuticals, it functions as a binder and matrix former in tablet and capsule formulations, aiding in controlled drug release and improving stability. It also serves as a base for ointments, suppositories, and creams, enhancing texture and drug solubility where applicable. In the medical field, it is used as a biocompatible coating for devices and implants, and as a dry lubricant for medical tools. In biotechnology, high MW PEG is crucial for protein precipitation, nucleic acid purification, and crystallization techniques due to its ability to modulate solubility. In the food industry, it acts as a thickener, stabilizer, and moisture retention agent in select products. In cosmetics, it provides viscosity modification and humectant properties in lotions, creams, and shampoos. Industrially, it is employed as a binder in ceramics, adhesives, and polymer composites, and in antifreeze formulations requiring higher viscosity.
format_list_bulleted Product Specification
| Test Parameter | Specification |
|---|---|
| Melting Point (°C) | 65-68 |
| Viscosity (5% in water, 25°C) | 600-1200 cP |
| Purity | 99-100 |
| pH 0.5 in Water | 6-7 |
| Alkalies and Other Metals (as CaO) | 1 |
| Appearance | White powder |
| Infrared Spectrum | Conforms to structure |
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