Propylene Glycol, identified by CAS number 57-55-6, is a chemical compound with a remarkable range of applications, making it a staple in various industries. NINGBO INNO PHARMCHEM CO.,LTD. is a leading provider of high-quality Propylene Glycol, serving diverse needs from pharmaceutical formulations to industrial coolants. This article delves into the properties, grades, and applications of Propylene Glycol, aiming to provide clarity for those seeking to buy Propylene Glycol China manufacturers.

What is Propylene Glycol?

Propylene Glycol is a synthetic organic compound that is colorless and nearly odorless, with a faintly sweet taste. Chemically classified as a diol, it is miscible with a broad range of solvents, including water, acetone, and chloroform. Its low volatility and low toxicity make it a preferred choice in many applications where safety and efficacy are paramount. Understanding the CAS 57-55-6 chemical properties is key to appreciating its widespread use.

Grades of Propylene Glycol: USP vs. Industrial

Propylene Glycol is primarily available in two main grades: USP (United States Pharmacopeia) grade and Industrial or Technical grade.

  • USP Grade Propylene Glycol: This grade meets stringent purity standards set by the USP, making it suitable for use in food, pharmaceuticals, and cosmetics. It is widely recognized as a humectant, emulsifier, and solvent. If you are looking for a reliable source for Propylene Glycol USP grade price, NINGBO INNO PHARMCHEM CO.,LTD. offers competitive quotations. Its use as a food additive and cosmetic ingredient is extensive, valued for its moisturizing and texture-enhancing qualities.
  • Industrial Grade Propylene Glycol: This grade is used in a variety of industrial applications where the ultra-high purity of USP grade is not required. It serves as a crucial component in unsaturated polyester resins, engine coolants and antifreeze, hydraulic and brake fluids, and heat transfer fluids. Its role in these sectors highlights its importance in Propylene Glycol industrial applications.

Key Applications of Propylene Glycol

The versatility of Propylene Glycol allows it to be utilized across numerous sectors:

  • Food Industry: As a food additive, it acts as a humectant (maintaining moisture), solvent for flavors and colors, and stabilizer in products like salad dressings, baked goods, and beverages.
  • Pharmaceutical Industry: USP grade Propylene Glycol is a common ingredient in oral, injectable, and topical medications as a solvent, stabilizer, and preservative. It is often sought for its effectiveness as a pharmaceutical excipient.
  • Cosmetics and Personal Care: Its excellent moisturizing and skin-conditioning properties make it a staple in lotions, shampoos, conditioners, and makeup. Its function as a humectant is particularly valuable here.
  • Industrial Uses: Beyond its common use as an antifreeze and coolant, it also finds application in paints, coatings, inks, and as a deicing fluid for aircraft.
  • Other Uses: It is also used in e-cigarettes, theatrical fog production, and even in pet food as a carrier for nutrients.

When considering where to buy Propylene Glycol, it is essential to choose a reputable Propylene Glycol manufacturer like NINGBO INNO PHARMCHEM CO.,LTD., ensuring consistent quality and reliable supply. Their commitment to excellence ensures that clients receive products that meet their exact specifications, whether for sensitive pharmaceutical applications or robust industrial needs.