High-Quality Propylene Glycol from China Suppliers | Reliable Factory Supply
Basic Information
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.
| 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 |
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.
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.
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.
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.
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, and viscous liquid that is miscible with water, acetone, and chloroform.
Propylene glycol is primarily produced through the hydration of propylene oxide. This process yields a high-purity product suitable for industrial, pharmaceutical, and food-grade applications.
Yes. Propylene glycol is approved as a food additive under the E number E1520 and is widely used as a solvent and excipient in pharmaceutical products such as ointments and creams. It is recognized as generally safe by major regulatory agencies when used within approved limits.
Our propylene glycol has a minimum PG content of 99.50 wt%, with moisture content not exceeding 0.20% and acidity no more than 0.02%, ensuring high-quality performance across all applications.
Propylene glycol is widely used as a raw material for resins, plasticizers, surfactants, emulsifiers, and demulsifiers. It also serves as an antifreeze and heat transfer fluid in industrial systems, as well as a fixative and solvent in gas chromatography.
1,2-Propanediol and 1,3-Propanediol are structural isomers sharing the same molecular formula C₃H₈O₂, but with hydroxyl groups positioned differently on the propane chain. This difference affects their physical properties and suitability for specific industrial and chemical applications.