Understanding the chemical nuances of Polyethylene Glycol 400 (PEG 400) is key to appreciating its extensive utility across industries. At Ningbo Inno Pharmchem Co., Ltd., we are dedicated to providing not only the material itself but also comprehensive knowledge about its properties and applications. This deep dive into PEG 400's chemistry highlights why it is such a sought-after compound.

Chemically, PEG 400 is a polymer of ethylene oxide, represented by the general formula H−(O−CH2−CH2)n−OH, where 'n' signifies the average number of repeating ethylene oxide units. The '400' in its name refers to its approximate molecular weight, which influences its physical state and behavior. At room temperature, PEG 400 is a colorless, viscous liquid, a property attributed to its moderate chain length compared to higher molecular weight PEGs.

Its solubility in water and many organic solvents is a defining characteristic. This amphiphilic nature allows PEG 400 to act as a bridge between polar and non-polar substances, making it an excellent co-solvent and emulsifier. This is particularly beneficial in complex formulations where disparate ingredients need to be blended homogeneously, a crucial factor for those researching what is PEG 400.

Key specifications for PEG 400 often include its appearance (colorless liquid), color (e.g., Pt-Co scale), hydroxyl value, and molecular weight range. Its low volatility and relatively low toxicity profile contribute to its safety and ease of handling in various settings, from pharmaceutical labs to industrial manufacturing floors. These properties are essential for any company looking to buy polyethylene glycol 400.

The versatility stemming from these chemical properties makes PEG 400 invaluable. Whether serving as a pharmaceutical binder, a cosmetic humectant, a lubricant in industrial machinery, or a wetting agent in printing inks, its ability to modify surface tension, dissolve substances, and retain moisture is consistently leveraged. Ningbo Inno Pharmchem Co., Ltd. ensures that our PEG 400 consistently meets these precise chemical and physical requirements, providing reliability for all our clients' applications.