Poly(Propylene Glycol)(CAS: 25791-96-2)

Poly(Propylene Glycol) (PPG) is a colorless, odorless, and viscous liquid with a high molecular weight, typically ranging from 200 to 20,000 Da. It is soluble in water and organic solvents. PPG is relatively inert and non-toxic, with limited reactivity towards acids, bases, and oxidizing agents. It crystallizes at temperatures below -70°C and has a low volatility, making it stable under normal conditions.

Poly(Propylene Glycol) (PPG) is synthesized by the polymerization of propylene glycol. This process involves the repeated addition of propylene oxide to propylene glycol in the presence of a catalyst, such as a strong acid or a metal alkoxide. The reaction is typically carried out under anhydrous conditions to ensure high molecular weight and high selectivity, leading to a high yield of PPG.

Poly(Propylene Glycol) (PPG) finds extensive use in the pharmaceutical, polymer, and cosmetic industries. It is used as a plasticizer, surfactant, emulsifier, and stabilizer. PPG is also employed in the manufacturing of biocompatible materials, lubricants, and as a carrier in drug delivery systems. Its biocompatibility and low toxicity make it a preferred choice in biomedical applications.

When handling Poly(Propylene Glycol) (PPG), ensure that proper personal protective equipment (PPE) is worn, including gloves, goggles, and a lab coat. Work in a well-ventilated area or a fume hood to avoid inhalation of vapors. Store PPG in tightly sealed containers away from heat sources. In case of a spill, neutralize it with baking soda or similar alkaline substances, then dispose of the waste according to local regulations. Always consult the Material Safety Data Sheet (MSDS) for detailed safety information.