Propylene Glycol (PG), identified by the CAS number 57-55-6, is a chemical compound that plays a pivotal role across numerous industries due to its unique chemical properties. As a leading supplier, NINGBO INNO PHARMCHEM CO.,LTD. offers high-quality Propylene Glycol, catering to a global clientele. This article explores the fundamental chemical characteristics of PG and examines the market demand that fuels its widespread use.

Unveiling the Chemical Properties of Propylene Glycol

The chemical structure of Propylene Glycol, C3H8O2, features two hydroxyl groups, classifying it as a diol. This structure imparts several key properties that make it highly valuable:

  • Physical State: It is a colorless, viscous liquid at room temperature.
  • Odor and Taste: PG is nearly odorless and possesses a faintly sweet taste, which is advantageous in food and cosmetic applications.
  • Solubility: It is highly miscible with water, ethanol, acetone, and chloroform, and soluble in ether and benzene. This excellent solvency is crucial for its use as a solvent in various formulations.
  • Hygroscopicity: Propylene Glycol is hygroscopic, meaning it readily absorbs moisture from the air. This property makes it an effective humectant, preventing products from drying out. This is a primary reason for its selection in cosmetic ingredient applications.
  • Low Volatility and Toxicity: Compared to other glycols like ethylene glycol, PG exhibits very low volatility and low toxicity, making it a safer alternative for many applications, including as a food additive.
  • Freezing Point Depression: PG effectively lowers the freezing point of water, a property utilized in antifreeze and deicing fluids, demonstrating its utility in demanding industrial applications.

Market Demand and Applications

The demand for Propylene Glycol is driven by its multifaceted applications:

  • Pharmaceuticals: USP grade PG is widely used as a solvent and stabilizer in liquid medications, injections, and topical formulations. Its role as a pharmaceutical excipient is critical for drug delivery and stability.
  • Food and Beverage: Its humectant and solvent properties are essential in processed foods, flavors, and colors, ensuring product consistency and enhancing sensory appeal.
  • Cosmetics and Personal Care: PG is a key ingredient in skincare, haircare, and beauty products, acting as a moisturizer, solvent, and viscosity modifier. Its function as a humectant is particularly valued in this sector.
  • Industrial Sector: Its use in antifreeze, deicing fluids, hydraulic fluids, and as a raw material for polyester resins underscores its importance in various manufacturing processes.

For businesses seeking reliable sources of Propylene Glycol, understanding the nuances of its chemical properties and market demand is crucial. NINGBO INNO PHARMCHEM CO.,LTD. stands as a trusted partner, offering high-purity Propylene Glycol and expert support to meet diverse industry requirements. Whether you are looking for Propylene Glycol USP grade price or exploring its applications as a solvent, sourcing from a reputable Propylene Glycol manufacturer ensures quality and performance.