Propylene Glycol (PG)Propylene glycol (PG) is a dihydric alcohol, a colorless, odorless, slightly viscous liquid with several excellent properties as a solvent.Propylene glycol is completely soluble in water and has the property of dissolving many organic compounds such as perfumes, essential oils and resins, and in addition, it has extremely low toxicity and is practically harmless to the human body.Propylene glycol (PG) mixes well with chloroform, acetone, water and a range of other solvents. In applications that work with heat exchange at low temperatures, it is used as a process fluid. It is commonly found in food processing.In addition, because it has a much higher boiling point than water and a lower freezing point, it is used as an antifreeze or refrigerant and as a heat transfer medium.Propylene glycol (PG) is a solvent commonly used in commercial food flavorings. Under acidic or basic conditions, PG can react with food flavoring compounds to form new compounds. Three specific reactions have been described: the reaction of PG with aldehydes and ketones to give acetals and catals, the reaction of PG with organic acids to give mono and diesters, and the transesterification reaction of PG with lactones to give dihydroxy esters.Apart from being used as an intermediate raw material for resins, it has very good properties as a solvent due to its properties such as damping performance, wetting, preservation action, emulsion action, boiling point. High and low freezing, widely used in food, pharmaceuticals, cosmetics, heating materials, refrigerants and antifreeze. In cosmetic products, it can be used in toothpaste and soap with glycerol or sorbitol with moisturizer. Used in hair dye moisture, also used as an antifreeze. It is also used in cellophane, emollients and the pharmaceutical industry.
Propylene glycol (PG), for example, can cause a wide range of symptoms of allergic skin reactions, and its entry through the skin is said to lead to kidney damage and liver abnormalities. It does not even prove this to some extent.It is also said to be made from oil, has a blocking effect on the skin and dries and irritates the skin.Propylene glycol (PG) is obtained by hydrolysis of propylene oxide, which in turn is made of propene. Propene is produced during oil refining, so the propylene glycol obtained in this way can be related to mineral oil in a broader sense.However, this product no longer has the properties of a mineral oil and its properties are completely different. Propylene glycol can also be made from plant glycerin.Propylene glycol has a health effect. For example, it absorbs water and connects it. Therefore, propylene glycol should never be used in high concentrations, because it removes water from the environment, for example, it can remove water from the skin and also has a stimulating effect.For this reason, propylene glycol is always used for skin care at concentrations as high as 10%.Propylene glycol has no quasi-blocking effect, because the molecule is quite small and also easily soluble in water. Small molecules are more likely to penetrate the stratum corneum, carrying water with them, leading to hydration of the stratum corneum. This is related to how glycerin works, which is very similar to propylene glycol this is a Benefits and harms of monopropylene glycol.
Used as a direct additive, it can be found in everything from salad dressings, packaged ice and flavored iced tea to cosmetics, medicines, flavorings and more.
It produces little steam. Due to the lower density of PG, small clouds produce steam compared to vegetable glycerin.Propylene glycol (PG) provides a powerful moisturizer, meaning it retains a lot of moisture. For this reason, it dries the mouth and throat faster.Propylene glycol has a low viscosity with a fluid consistency like water.