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| Customization: | Available |
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| CAS No.: | 57-55-6 |
| Formula: | C2h6o2 |
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Under normal circumstances, "propylene glycol" is often used as an abbreviation to refer to 1, 2-propylene glycol.
It is a viscous, colorless liquid with almost no odor and a slightly sweet taste. Its chemical formula is. Because it contains two hydroxyl groups, it is classified as a diol. 1, 2-propylene glycol is miscible with a variety of solvents, including water, acetone and chloroform. Overall, ethylene glycol compounds usually do not cause irritation and have very low volatility [5]. Its functions include: stabilizer, coagulant, anti-caking agent, defoamer, emulsifier, moisture retainer, thickener, and it can also be used in the production of cosmetics and pharmaceuticals.
| ITEMS | SPECIFICATIONS | ANALYSIS RESULT |
| Appearance | Colorless clear viscous liquid | Colorless clear viscous liquid |
| Assay | 99.80%min | 99.91% |
| EG | 50 ppm max | N.D. |
| DEG | 50 ppm max | N.D. |
| Residue on Ignition | 2.5 mg max | 0.7 |
| Chloride w/% | 0.007max | <0.007 |
| Sulfate w/% | 0.006max | <0.006 |
| Heavy metals | 5 ppm max | <5 |
| Specific Gravity(25ºC/25ºC) | 1.035-1.037 | 1.036 |
| Acidity(0.1N NaOH) | 0.05mL max | 0.01ml |
| Moisture w/% | 0.10max | 0.065 |
| Fe | 0.1 ppm max | N.D |
| Colouring( Pt-Co) | 10max | <5 |
| IBP | 184 ºCmin | 187ºC |
| DP | 189 ºCmax | 187ºC |
Propylene glycol is an important raw material for unsaturated polyester, epoxy resin and polyurethane resin. The consumption in this regard accounts for about 45% of the total consumption of propylene glycol. This unsaturated polyester is widely used in surface coatings and reinforced plastics. Propylene glycol has good viscosity and hygroscopicity, and is non-toxic. Therefore, it is widely used as a hygroscopic agent, antifreeze, lubricant and solvent in the food, pharmaceutical and cosmetic industries.
In the food industry, propylene glycol reacts with fatty acids to form propylene glycol fatty acid esters, which are mainly used as food emulsifiers. Propylene glycol is an excellent solvent for condiments and pigments. Propylene glycol is often used in the pharmaceutical industry as a solvent, softener and excipient for manufacturing various ointments and oils. Due to its good miscibility with various fragrances, it is also used as a solvent and softener for cosmetics, etc.
Propylene glycol is also used as a humidifier and fungicide for tobacco, as well as a solvent for lubricating oil in food processing equipment and for food marking inks. The aqueous solution of propylene glycol is an effective antifreeze.
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