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- Chemical Name: Propylene glycol
- CAS No.: 57-55-6
- Molecular Fomula: ：C3H8O2
- Molecular weight：76.09
- Appearance:Colorless liquid
- Sample：Available
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Description of Reagent
- Propylene glycol, also called propane-1,2-diol, is an organic compound with the chemical formula C3H8O2. It is a viscous colorless liquid which is nearly odorless but possesses a faintly sweet taste. Chemically it is classed as a diol and is miscible with a broad range of solvents, including water, acetone, and chloroform.
It is produced on a large scale and is primarily used in the production of polymers but also sees use in food processing as the E-number E1520, and as a process fluid in low temperature heat exchange applications.
The compound is sometimes called α-propylene glycol to distinguish it from the isomer propane-1,3-diol (β-propylene glycol).
Basic Info of Reagent
Basic Info
Numbering system
Properties
Safety Info
Basic Info
| Chemical Name | 1,2-Propanediol |
| Synonyms | Propane-1,2-diol; |
| CAS No. | 57-55-6 |
| Molecular Formula | C3H8O2 |
| Molecular Weight | 76.09440 |
| PSA | 40.46000 |
| LogP | -0.64050 |
Numbering system
| UNII | 6DC9Q167V3 |
Properties
| Appearance & Physical State | clear viscous liquid |
| Density | 1.036 g/mL at 25ºC(lit.) |
| Boiling Point | 187ºC |
| Melting Point | -60ºC |
| Flash Point | 99ºC |
| Refractive Index | n20/D 1.432(lit.) |
| Stability | Stable under normal temperatures and pressures. |
| Storage Condition | Store at RT. |
Safety Info
| Safety Statements | S24/25 |
| HS Code | 2905320000 |
What is Propylene glycol ？
- With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Propylene glycol which has developed particularly rapidly in recent years. Do you know about Propylene glycol?
- The official answer：Colorless viscous and stable absorbent liquid, almost tasteless and odorless. Miscible with water, ethanol, and many organic solvents, melting point -60 °C (lit.) boiling point 187 °C (lit.) density 1.036 g/mL at 25 °C (lit.) vapor density 2.62 (vs air) vapor pressure 0.08 mm Hg ( 20 °C).
What’s the application of Propylene glycol ？
- Carrier solvent; wetting agent; humectant; anti-caking agent; antioxidant; tissue improver; surfactant; stabilizer; thickener; dough conditioner; emulsifier; flavoring agent; excipient; processing aids. GB2760～96 is listed as food processing aids. Mainly used as a solvent for various spices, pigments, preservatives, vanilla beans, roasted coffee grains, natural spices, and other extraction solvents. It is used as a moisturizing and softening agent for candy, bread, packaged meat, cheese, etc. It can also be used as an anti-mold additive for noodles and stuffing cores. Add 0.006% to soy milk, it can make the flavor unchanged when heated, and make white and shiny packaged tofu, and the volume of oil frying is expanded. Use propylene glycol is the intermediate of fungicide phenotypic ketoconazole. It can be used as a solvent to dissolve preservatives, pigments, antioxidants, and other insoluble food additives in it and then added to food; it has strong hygroscopicity and has a moisturizing and anti-freezing effect on food. Our country can be used in pastry, the maximum use amount is 3.0g/kg. use propylene glycol is an important raw material for unsaturated polyester, epoxy resin, polyurethane resin, the amount in this area accounts for about 45% of the total consumption of propylene glycol, this unsaturated polyester is used in a large number of surface coatings and reinforced plastics. Propylene glycol has good viscosity and hygroscopicity and is non-toxic, so it is widely used as hygroscopic, antifreeze, lubricant, and solvent in food, pharmaceutical, and cosmetic industries. In the food industry, propylene glycol reacts with fatty acid to produce propylene glycol fatty acid ester, which is mainly used as a food emulsifier; propylene glycol is an excellent solvent for seasoning and coloring. In the pharmaceutical industry, propylene glycol is often used as a solvent, softening agent, and excipient of various ointments and creams, etc. Propylene glycol is also used as a solvent and softening agent of cosmetics because of its good mutual solubility with various fragrances. Propylene glycol is also used as a tobacco humidifier, anti-mildew agent, lubricant for food processing equipment, and solvent for food marking ink. The aqueous solution of propylene glycol is an effective antifreeze agent.
Conclusion
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