propylene glycol is an organic compound (diol), usually slightly sweet, odorless, colorless and transparent oily liquid, hygroscopic and easily mixed with water, acetone, and chloroform. propylene glycol has a wide range of applications and is often used as a hygroscopic agent, antifreeze, lubricant and solvent in the food, pharmaceutical and cosmetic industries. propylene glycol supply points out: propylene glycol, which is widely used in various industries, is divided into two types: 1,2-propanediol and 1,3-propanediol. 1,2-propylene glycol has good viscosity and hygroscopicity and is widely used in the food, pharmaceutical and cosmetic industries.
the role of propylene glycol in the pharmaceutical industry is as follows:
propylene glycol is used as a solvent for blending agents, preservatives, ointments, ointments, pills and vitamins, etc. , also used as a softener and excipient;
used to dissolve many drugs such as sulfa drugs, local anesthetics, vitamin a, vitamin d, sex hormones, chloramphenicol and many volatile oils;
a mixture of propylene glycol and water in a certain proportion can delay the hydrolysis of the drug and increase its stability;
when its concentration is appropriately selected, it can be used as an injection solvent to have quick-acting or delayed-acting effects, and can also it can be used as a penetration enhancer for drug absorption through the skin or mucous membrane.
