Propylene glycol as a chemical reagent, with water, ethanol and a variety of organic solvents immiscible, the chemical formula is C3H8O2.
Propylene glycol is used as a raw material for unsaturated polyester resins, and can be used as a wetting agent in cosmetics, toothpastes and soaps in combination with glycerin or sorbitol. In the hair dye used as humidity, leveling agent, also used as antifreeze, but also for cellophane, plasticizers and the pharmaceutical industry.
Propylene glycol specific application as follows:
1, used as resin, plasticizer, surface active agent, emulsifier and demulsifier material, also can be used as antifreeze and heat carrier.
2, used as GC liquid, solvent, cryoprotectant, plasticizer and dehydrating agent.
3, carrier solvents; humectants; humectants; anti-caking agents; antioxidants; arrangements for improving agents; surface active agents; stabilizers; thickeners; dough conditioners; emulsifiers; flavoring agents; excipients; . GB 2760 ~ 96 listed as food processing aids. Mainly used for a variety of spices, pigments, preservatives solvents, vanilla beans, roasted coffee grains, natural spices and other extraction solvents. Sweets, bread, meat packaging, cheese and other moisturizers, softeners. Can also be used as noodles, stuffing core anti-mildew additives. 0.006% increase in soymilk, the flavor can be heated, made of bright white package tofu, fried volume expansion.
4, propylene glycol is the fungicide difenoconazole intermediates.
5, as a solvent, preservatives, pigments, antioxidants and other water-soluble food additives dissolved in the meantime, and then participate in food; have a strong hygroscopicity, the food moisturizing and antifreeze effect. Our rules can be used for cakes, the maximum amount of 3.0g / kg.
6, Propylene glycol is the primary material of unsaturated polyester, epoxy resin and polyurethane resin, accounting for about 45% of the total consumption of propylene glycol. The unsaturated polyester is widely used for exterior coating and reinforced plastic. Propylene glycol has good viscosity and hygroscopicity and is non-toxic, and is therefore widely used as a hygroscopic agent, cryoprotectant, lubricant, and solvent in the food, pharmaceutical and cosmetic industries. In the food industry, propylene glycol and fatty acids reacts to propylene glycol fatty acid esters, primarily as food emulsifiers; propylene glycol is an excellent solvent for spices and colorings. Propylene glycol is commonly used in the pharmaceutical industry as a solvent, softener and excipient for making various types of ointments and ointments. Since propylene glycol and various flavors have good mutual solubility, they are also used as solvents and softeners for cosmetics. Propylene glycol is also used as a solvent for tobacco wetting agents, mildewciders, food processing equipment lubricants, and food symbol inks. An aqueous solution of propylene glycol is a useful cryoprotectant.
7, as a drug carrier, granular drug agents. Can be used as cosmetic humectants, softeners, solvents and so on. Tobacco occupations can be used as tobacco flavor, tobacco humectants, preservatives. Food occupations as a fragrance, food coloring solvents, food packaging softener, food anti-sticking agent. Can also be used for the production of unsaturated polyester resin, plastic plasticizers, dehydrating agents, surfactants, curing agents, adhesives and other materials. Can also be used for paint, pesticides, paints and other occupations.