Proper understanding of chemical properties and handling procedures is vital for maximizing the utility and safety of any chemical compound. NINGBO INNO PHARMCHEM CO., LTD. provides essential information regarding Pharmaceutical Grade Polyethylene Glycol 300 (PEG 300), CAS 25322-68-3, focusing on its key characteristics and best practices for storage and handling.

PEG 300 is defined by its chemical formula H−(O−CH2−CH2)n−OH, representing a polymer of ethylene oxide. Its molecular weight distribution is specifically centered around 285-315 g/mol, contributing to its liquid state at room temperature. Key quality parameters include a purity exceeding 99%, an acidity/alkalinity range of 4.5-7.5, and a viscosity between 80-105 mPa·s at 20ºC. These specifications are critical for its performance as a pharmaceutical excipient and industrial solvent.

The hygroscopic nature of PEG 300 means it readily absorbs moisture from the air. Therefore, proper storage is essential to maintain its purity and efficacy. NINGBO INNO PHARMCHEM CO., LTD. recommends storing PEG 300 in a cool, dry place, protected from humidity and direct sunlight, within tightly sealed, airtight containers. Suitable container materials include stainless steel, aluminum, or glass, especially for the liquid grade, to prevent contamination and degradation.

When handling PEG 300, standard laboratory safety protocols should be followed. While considered to have low toxicity, avoiding direct contact with skin and eyes is advisable. If contact occurs, rinsing thoroughly with water is recommended. Adequate ventilation in the workspace is also important. For formulators looking to buy pharmaceutical grade PEG 300, understanding these handling guidelines ensures operational safety and product integrity.

The stability of PEG 300 in air and solution is a significant advantage, making it less prone to rancidity compared to other organic compounds. However, it is noted that PEGs with lower molecular weights (below 2000) are not entirely resistant to microbial growth. Therefore, maintaining clean storage conditions and utilizing appropriate preservatives in formulations containing PEG 300 might be necessary depending on the application and storage duration.

NINGBO INNO PHARMCHEM CO., LTD. is dedicated to providing comprehensive support for its clients. As a trusted PEG 300 supplier in China, the company ensures that all products, including CAS 25322-68-3, are accompanied by necessary technical data sheets and safety information. By adhering to these guidelines, users can confidently incorporate PEG 300 into their processes, achieving desired outcomes in pharmaceutical, cosmetic, and industrial applications.