Key Properties
Dipropylene Glycol (DPG) is a mixture of isomeric diols with the molecular formula C₆H₁₄O₃ and CAS No. 25265-71-8. It appears as a colorless, low-odor, viscous liquid with hygroscopic properties. It has a high boiling point of approximately 230 °C and is fully miscible with water and many organic solvents. DPG is known for its low volatility and good solvency.
Key Features
DPG is an excellent solvent and carrier with low toxicity and mild odor, making it suitable for fragrance, cosmetic, and industrial formulations. It provides good stability, moisture retention, and compatibility with resins, essential oils, and active ingredients. It is widely used in applications where controlled evaporation and smooth formulation performance are required.
Main Applications
Dipropylene Glycol is widely used as a solvent and carrier in fragrances, perfumes, cosmetics, and personal care products. It is also used in coatings, inks, adhesives, and cleaning products. In industrial applications, it serves as a plasticizer intermediate, humectant, and formulation solvent in resins and chemical systems.
Production Process
Dipropylene Glycol is produced as a co-product during the hydration of propylene oxide. The reaction generates mono-, di-, and higher propylene glycols, which are then separated and purified through distillation to obtain high-purity DPG.
