Glycerin Glycerol
Structural formula
| Business number | 017W |
|---|---|
| Molecular formula | C3H8O3 |
| Molecular weight | 92.09 |
| label |
Glycerol, glycol, trihydroxypropane, 1,2,3-glycerol, Glycerol, Glycol alcohol, 1,2,3-Propanetriol, Trihydroxypropane, automobile and aircraft fuel, antifreeze, hygroscopic agent, lubricants, Solvents and co-solvents, Aquasorb, carrier solvent, thickener, plasticizer, vehicle, alcohol compounds |
Numbering system
CAS number:56-81-5
MDL number:MFCD00004722
EINECS number:200-289-5
RTECS number:MA8050000
BRN number:635685
PubChem number:24895092
Physical property data
1. Properties: Colorless, odorless, viscous liquid with a sweet taste.
2. Boiling point (ºC, 101.3kPa): 290, 182 (2666pa)
3. Melting point (ºC, pouring point): 20
4. Relative density (g/mL, 15/15ºC): 1.26526
5. Relative density (g/mL, 20/20ºC): 1.2613
6. Relative density (g/mL, 25/25ºC): 1.26170
7. Relative vapor density (g/mL, air=1): 3.1
8. Refractive index (15ºC): 1.47547
9. Refractive index (n20ºC): 1.4746
10. Refractive index (n25ºC): 1.4730
11. Viscosity (mPa·s, 20ºC): 243
12. Viscosity (mPa·s, 25ºC): 56.0
13. Viscosity (mPa·s, 30ºC): 18
14. Viscosity (mPa·s, 50ºC): 18
15. Flash point (ºC, closed): 177
16. Flash point (ºC): 523 (on Pt); 429 (on glass)
17. Heat of evaporation (KJ/mol, 55ºC): 88.17
18. Heat of evaporation (KJ/mol, b.p.): 61.09
19.(used in candies, desserts, meat products, etc.); can be used as a color carrier in colored foods. Glycerin is also used as a lubricant in food processing and packaging machinery. Commonly used as softeners, viscosity improvers and solvents in pharmaceutical and cosmetic manufacturing. Among polymer materials, glycerol is often used as a raw material for the production of polyurethane foams, polyethers, etc. It is an important raw material for the production of alkyd resin and celluloid, and is especially used in large quantities in the manufacture of alkyd resin paint. It is also widely used in the tobacco industry, ceramic industry, leather industry, wood industry and photography. and used as automobile and aircraft fuel and as antifreeze in oil fields.
2. Used as analytical reagent and gas chromatography stationary solution. Measure boron complexing agent. Used as solvents, lubricants, in the formulation of cosmetics and in the pharmaceutical industry.
3. Used as a toughening agent for polyvinyl alcohol and starch adhesives, and also used in the manufacture of unsaturated polyester resin, alkyd resin, polyester, glycerin epoxy resin, etc. As an important organic chemical raw material, it is widely used in military, food, pharmaceutical, daily chemical and other industries, with more than 1,700 uses. Defense industry: Nitroglycerin produced by the reaction of glycerin and nitric acid is an extremely sensitive explosive. Glycerin is also used as an antifreeze in aircraft fuel. Food industry: used as solvent, hygroscopic agent and color carrier. In flavored and colored foods, glycerol helps shape the food due to its viscosity. In the rapid freezing of food, glycerol can be used as a heat transfer medium in direct contact with the food. Glycerin is also a lubricant for food processing and packaging machinery. In addition, the application of polyglycerol and polyglyceryl esters in the manufacture of crispy foods and margarine is increasing year by year. Pharmaceutical industry: used as softener, viscosity improver and solvent. Glycerol can be used as a sedative, nitroglycerin is a vasodilator in coronary spasm, etc. Daily chemical industry: additives for cosmetics, toothpaste, food flavors, anti-drying agent for tobacco. Plastic industry: used as starting agent in the production of polyurethane foam. Textile printing and dyeing industry: used as lubricant, moisture absorbent, anti-shrink and anti-wrinkle treatment agent, diffusing agent, penetrating agent, etc. In addition, glycerol is widely used in ceramics, photography, leather and wood industries.
4. This product is used in stainless steel polishing solution, trivalent chromium plating solution and chemical copper plating, etc.
In cyanide zinc plating, it can make the coating smooth and delicate, improve cathodic polarization, and also make the coating bright. Glycerin and triethanolamine can be used for bright nickel plating at room temperature in a certain proportion.