Glycerin can be classified into natural glycerin which is derived from natural oils and fats, also called saponified glycerin, and synthetic glycerin which uses propylene as a raw material, depending on the production method. Compared with other glycerol, saponified glycerol has better quality and has a wide range of uses.
1. Used as an anti-coolant for aircraft and automotive liquid fuels
2. Used as a brightener for cellophane in the paper industry and as a plasticizer in the production of coated paper.
3. As a raw material for surfactants, toothpaste, an important moisturizer for cosmetics
4. Moisture absorbers for leather, textiles, etc., humectants for keeping tobacco in cigarettes
5. Edible flavors, raw materials for plasticizers
6. For the manufacture of glyceryl trinitrate smokeless powder, nitroglycerol acid resin and ester glue.
| Industry | use |
| Food industry | lubricants, sweeteners, solvents (fragrance, pigment), preparation of monoglycerides, polyglycerides (emulsifiers, margarines), moisturizers (pet foods), flavor enhancers |
| Pharmaceutical industry | Wetting agents, lubricants, solvents, smoothing agents, expectorants, cough syrup, etc |
| Cosmetic Industry | Toothpaste, Sukou, Skin Care, Plasticizer |
| Coating (alkyd resin) | cellophane production, softener, plasticizer |
| Tobacco Industry | Triacetin, Adhesive, Plasticizer |
| Explosive industry | Digestive agent for digesting glycerin and solid rocket fuel |
| Polyurethane Industry | One of the main raw materials for flexible polyurethane foams, propylene oxide / epoxy resin addition |
| In the textile industry | initiators, water-absorbent resins, etc., cotton yarn, cloth lubricant, sizing, soft |
| Paper industry | wetting agent, plasticizer |
The specific classification of glycerin is: industrial grade, cosmetic grade, food grade, pharmaceutical grade (sub-drug supplement and drug master), four grades.
The industrial grade usually refers to the second-class glycerin in GB 13206. The 95% pharmaceutical grade glycerin requires relatively high impurities in glycerin, has a limit requirement of diethylene glycol and ethylene glycol, and requires GMP certificate for the production of pharmaceutical grade glycerin. Food grade glycerin standards are currently a bit fuzzy, usually using GB13206
Crude glycerol generally refers to glycerol having a glycerin content of less than 93%. It is generally used to refine high-purity glycerol such as 95%, 98% and 99.5%. Refined glycerin is a general term and is classified into saponified glycerin, hydrolyzed glycerin and refined glycerin depending on the source of refined glycerin. Refined glycerin generally refers to 99.5% glycerin in cosmetic grade, which is in line with USP grade glycerin.
General glycerin refers to the concentration of 95 glycerol, generally used in industry, can not be used in cosmetics and pharmaceuticals, as well as in the food industry. Of course, refined glycerin can also be used as food grade glycerin, used in the food industry, and better as a drug. Grade glycerin for pharmaceuticals.
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