It is used as a solvent for poorly soluble or water-soluble stable drugs to increase its stability and has a quick-acting and delayed effect. It is used as a solvent, softener and excipient for the manufacture of various types of ointments and ointments.
2. Food, drink
Propylene glycol is an aqueous solvent that dissolves water-soluble flavors, pigments, preservatives, vitamins, resins, and the like. It is mainly used as a food emulsifier, and is an excellent solvent for seasonings and pigments. It is used as a stabilizer, coagulant, antidiction agent, etc. in cakes, and as a softener and emulsifier for gum-based confectionery.
3. Flavors, spices, food additives
It can be used as a solvent and carrier for food flavors. It is used as a solvent for various spices, pigments, preservatives, extraction solvents for vanilla beans, roasted coffee grains, natural flavors, and the like.
4. Cosmetics, daily chemicals
Propylene glycol is used as a solvent and softener for cosmetics and can be found in almost all forms of make-up, hair care products, lotions, after-shave care products, deodorants, mouthwashes, toothpastes. It is generally used as a wetting agent in cosmetics, toothpaste and soap in combination with glycerin or sorbitol. Used as a conditioning and leveling agent in hair dyes.
Propylene glycol is used as a moisturizer and antifungal agent in tobacco.
6. Industrial antifreeze
Industrial propylene glycol acts as a wetting agent and a dissolving agent in chemistry and is a major component in advanced antifreeze.
7. Paints and coatings
Propylene glycol has the characteristics of low freezing point and can be mixed with water in any proportion. When mixed with water, it can greatly reduce the freezing point of the whole coating and enhance the frost resistance of the coating. Therefore, it is often used as antifreeze in coatings, which can make coatings at 0. Do not freeze when you are at the same time. Propylene glycol has good compatibility with water and other solvents, has a high boiling point, and is easy to balance in an aqueous coating system. It also provides fluidity of the coating and slow drying of the coating.