Polyethylene Glycol (PEG), a polymer with the CAS number 25322-68-3, is a cornerstone in modern chemistry, valued for its exceptional versatility, biocompatibility, and tunable properties. As a leading Polyethylene Glycol manufacturer in China, we are at the forefront of producing this essential chemical intermediate. This article explores the scientific underpinnings of PEG and its diverse applications, underscoring why it’s a preferred choice for researchers and industrial chemists alike. Whether you are looking to buy Polyethylene Glycol for pharmaceutical use or for specialized industrial processes, understanding its science is key.

Chemical Structure and Properties: The Foundation of Versatility

PEG is a polyether formed by the polymerization of ethylene oxide. Its general formula, H(OCH₂CH₂O)nH, indicates a flexible linear chain with terminal hydroxyl groups. The variable 'n' represents the degree of polymerization, directly influencing the molecular weight and, consequently, the physical properties. Low molecular weight PEGs (e.g., PEG 200, 400) are liquids, serving effectively as solvents, humectants, and plasticizers. As the molecular weight increases (e.g., PEG 1000, 6000, 8000), PEG transitions into a waxy solid or flake form, providing thickening, lubrication, and structural properties.

Key properties include excellent water solubility, low toxicity, and minimal immunogenicity, making it ideal for biomedical applications. Its inertness, combined with its ability to dissolve a wide range of organic and inorganic compounds, also lends itself to numerous industrial uses. For formulators, understanding these properties allows for precise selection of the appropriate PEG grade to achieve desired outcomes.

Production and Synthesis: Ensuring Quality and Consistency

The production of Polyethylene Glycol typically involves the catalytic polymerization of ethylene oxide. Different catalysts and reaction conditions can influence the molecular weight distribution and purity of the final product. As a dedicated Polyethylene Glycol manufacturer, we employ advanced synthesis techniques and rigorous quality control measures to ensure that our products meet high purity standards, whether for pharmaceutical, cosmetic, or industrial grades. This commitment guarantees that when you partner with us as your Polyethylene Glycol supplier in China, you receive consistent quality batch after batch, critical for reproducible results in your applications.

Diverse Applications Driven by Science

The scientific flexibility of PEG translates into a broad spectrum of applications:

  • Pharmaceuticals: PEG is widely used as a solvent, solubilizer, emulsifier, stabilizer, and matrix former in oral, topical, and parenteral drug formulations. Its use in PEGylation—covalently attaching PEG to proteins or peptides—enhances their therapeutic efficacy by increasing solubility and extending circulation time.
  • Cosmetics and Personal Care: Its humectant, emollient, and solvent properties make PEG a staple in creams, lotions, shampoos, and toothpaste. It contributes to product texture, moisture retention, and stability.
  • Industrial Chemistry: PEG serves as a lubricant, surfactant, plasticizer, and chemical intermediate in industries ranging from textiles and paints to plastics and electronics. Its ability to modify surface properties is particularly valuable.
  • Biotechnology: In laboratories, PEG is a common precipitant for proteins and nucleic acids, aiding in purification and crystallization for structural analysis. It is also used in cell fusion techniques for research and monoclonal antibody production.

Partnering for Chemical Excellence

When you need to buy Polyethylene Glycol, choosing the right supplier is as important as selecting the right grade. Our company, as a leading Polyethylene Glycol manufacturer in China, offers not only a comprehensive product range but also the assurance of quality, reliability, and competitive Polyethylene Glycol price. We are committed to supporting scientific innovation and industrial advancement by providing high-quality PEG. Contact us to discuss your specific needs and leverage our expertise as your trusted chemical partner.