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High-Quality Propylene Glycol from China Suppliers - Trusted Factory for Premium Raw Material

Basic Information

Discover high-quality products manufactured directly in China by leading suppliers. Our extensive range includes innovative designs and superior craftsmanship, ensuring that you receive top-notch items straight from the factory. With a commitment to excellence, we collaborate with trusted suppliers in China to bring you unbeatable prices and exceptional service. Choose us for your sourcing needs, and experience the benefits of partnering with reliable suppliers and a state-of-the-art factory. Elevate your business by accessing premium products from China today!
  • Other Name 1,2-Propanediol; Mono Propylene Glycol
  • CAS Number 57-55-6
  • Molecular Formula C3H8O2
  • Molucular Weight 76.09440
  • Package 190kg/Drum, or 23-25mt/ios tank.
  • Storage This product should be kept in cool and dry warehouses. It is of utmost importance to isolate it from toxic substances to prevent any potential contamination or chemical reactions. During transportation, great care must be taken to ensure the integrity of its packaging. Given its relatively high moisture - absorbability, protecting the package from damage is crucial to maintain the product's quality.
  • Shelf Life The shelf life of this product is two years under proper storage conditions.
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Product Details

Introduction to 1,2-Propanediol (Propylene Glycol)

1,2-Propanediol, also known as propylene glycol, is an organic compound (a diol) with the chemical formula C₃H₈O₂. Propylene glycol is typically a slightly sweet-tasting, odorless, colorless, and transparent viscous liquid. Chemically, propylene glycol belongs to the category of glycols and is miscible with a variety of solvents, including water, acetone, and chloroform. Propylene glycol can be manufactured through the hydration of propylene oxide and is primarily used to produce polymers. However, it is also utilized as a food additive, with the E number E1520. Propylene glycol has another isomer, 1,3-propanediol.

Product Specification
Item Unit Specification
PG content Wt % 99.50 min
Moisture % 0.20 max
Density (20℃) g/cm³ 1.035–1.040
Index of refraction nD20 1.428–1.435
Acidity % 0.02 max
Distillation range °C 183–190
Colourity (Pt-Co) APHA 16
Appearance — Colorless, Viscous, Transparent liquid
Applications

Industrial Raw Materials: It acts as a fundamental raw material for resins, plasticizers, surfactants, emulsifiers, and demulsifiers. It also functions as an antifreeze and heat carrier, ensuring the smooth operation of various industrial systems under extreme temperature conditions.

Chemical Reagents: In gas chromatography, it serves as a fixative and solvent. Its antifreeze properties make it useful in different chemical processes, and it can also act as a plasticizer and dehydrant.

Pharmaceutical Industry: In the pharmaceutical field, it is frequently employed as a solvent, softener, and excipient in the manufacture of various ointments and creams, facilitating the effective delivery of active ingredients.

Daily Life Applications: It is used in air deicing liquids, refrigerants, and antifreeze solutions. Moreover, it finds its way into food and spices, fragrances, cosmetics, and personal health products, enhancing their quality and performance.

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Frequently Asked Questions (FAQ)
Q What is 1,2-Propanediol (Propylene Glycol) and what are its basic properties?
1,2-Propanediol, commonly known as propylene glycol, is an organic diol compound with the chemical formula C₃H₈O₂. It is a colorless, odorless, slightly sweet-tasting, and transparent viscous liquid. It is fully miscible with water, acetone, and chloroform, and is classified within the glycol family of chemicals.
Q How is propylene glycol manufactured?
Propylene glycol is primarily manufactured through the hydration of propylene oxide. This process involves reacting propylene oxide with water under controlled conditions to yield the final diol product, which can then be purified to meet various industry-grade specifications.
Q Is propylene glycol safe for use in food and pharmaceuticals?
Yes. Propylene glycol is approved as a food additive with the E number E1520 and is widely recognized as safe (GRAS) by regulatory authorities when used within established limits. In the pharmaceutical industry, it is commonly used as a solvent, softener, and excipient in ointments and creams.
Q What is the minimum purity level of your propylene glycol product?
Our propylene glycol product meets a minimum PG content of 99.50 wt%, with moisture not exceeding 0.20%, and acidity no greater than 0.02%. The appearance is a colorless, viscous, and transparent liquid, conforming to high-grade industrial and pharmaceutical standards.
Q What industries commonly use propylene glycol?
Propylene glycol is widely used across multiple industries, including chemicals (as a raw material for resins, plasticizers, and surfactants), pharmaceuticals (as a solvent and excipient), food and beverage (as an additive and carrier), cosmetics and personal care, as well as industrial applications such as antifreeze, heat transfer fluids, and air deicing liquids.
Q What is the difference between 1,2-propanediol and 1,3-propanediol?
1,2-Propanediol and 1,3-propanediol are structural isomers, meaning they share the same molecular formula (C₃H₈O₂) but differ in the position of their hydroxyl (-OH) groups. In 1,2-propanediol, the hydroxyl groups are on the first and second carbon atoms, while in 1,3-propanediol they are on the first and third. This difference results in distinct physical properties and industrial applications for each compound.

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