Propylene Glycol Liquid CAS 57-55-6
Factory wholesale Propylene Glycol Liquid CAS 57-55-6
- Appearance:Liquid
- Purity:99.8%
- Delivery:30days
- Sample Available:Available
- Payment:L/C,T/T,D/P,Paypal,Money Gram,Western Union
- Incoterm: FOB,CFR,CIF,EXW,FCA,CPT,CIP
- Transporta:Ocean, Land,Air, DHL，TNT FedEx
Name: Propylene Glycol Liquid
CAS: 57-55-6
MOQ: 1KG
Directory Guidance on Propylene Glycol Liquid
Chemical Structure
Basic Info:
| 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) |
| refractive index | n20/D 1.432(lit.) |
Product Introduction:
Propylene Glycol Liquid is an important organic compound with the chemical formula C₃H₈O₂. It is a colorless, viscous, stable, water-absorbing liquid that is almost tasteless and odorless, has low toxicity, and is flammable. It is miscible with a variety of organic solvents such as water, ethanol, ether, chloroform, acetone, etc. Although its solubility in hydrocarbons, chlorinated hydrocarbons, and oils is low, its solubility is stronger than that of ethylene glycol.
There are three main production methods for Propylene Glycol Liquid: direct hydration of propylene oxide, indirect hydration of propylene oxide, and direct catalytic oxidation of propylene. Among them, direct hydration of propylene oxide is a pressurized non-catalytic hydrolysis method, which is obtained by direct hydration of propylene oxide and water at 150℃-160℃ and 0.78MPa-0.98MPa pressure. The reaction product is evaporated and distilled to obtain the finished product; indirect hydration of propylene oxide is obtained by indirect hydration of propylene oxide and water under the condition of sulfuric acid as a catalyst.
Propylene Glycol Liquid has a wide range of applications in many fields. In the chemical industry, it is the raw material of unsaturated polyester resin, epoxy resin, polyurethane resin, and also the raw material of plasticizer, surfactant, emulsifier and demulsifier. In the food industry, Propylene Glycol Liquid can be used as a solvent for flavors and food coloring, a tobacco wetting agent, a mildew inhibitor and a fruit ripening preservative, a pharmaceutical excipient, etc. In addition, it can also be used as an antifreeze, heat carrier and food machinery lubricant.
Although Propylene Glycol Liquid has important uses in many industries, you still need to pay attention to its safety when using it. It is a flammable liquid, and its vapor can form an explosive mixture with air, which can cause combustion and explosion when exposed to open flames and high heat. Its vapor is heavier than air and can spread to a considerable distance at a lower level. It will catch fire and burn back when it encounters a fire source. Propylene Glycol Liquid is irritating to the skin and mucous membranes. Inhaling or ingesting a large amount may cause harm to the body. Therefore, during storage and use, it should be kept away from fire and heat sources, avoid contact with oxidants, and take appropriate protective measures.
Nature and Specifications:
| Item | Specification |
| Product Name | Propylene Glycol Liquid |
| CAS No. | 57-55-6 |
| Appearance | Liquid |
| Shelf Life | 2 years |
| Packing | As your requirements |
| Fp | 225 °F |
| storage temp. | Store at +5°C to +30°C. |
| solubility | Chloroform (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly) |
| pka | 14.49±0.20(Predicted) |
| form | Viscous Liquid |
| color | APHA: ≤10 |
| Specific Gravity | 1.038 (20/20℃)1.036～1.040 |
Product service:
- Certificate Of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Route of synthesis (ROS)
- Method of Aanlysis (MOA)
- Nuclear Magnetic Resonance (NMR)
- Packing pictures and loading video before loading
- Free Sample
- Factory audit
In the field of industrial manufacturing, Propylene Glycol Liquid is widely used as a carrier solvent for resins, coatings and inks due to its excellent solvent properties and low volatility. For example, in the production of polyester resins, Propylene Glycol Liquid participates in polycondensation reactions as a reactive monomer to generate polymer materials; in the coating industry, its high boiling point characteristics help to delay solvent volatilization and improve the leveling and film-forming quality of the coating. It occupies an important position in the field of antifreeze. Its freezing point adjustment ability is better than that of traditional ethylene glycol products, and its toxicity is significantly reduced. It is particularly suitable for cooling systems in food processing equipment or sensitive environments.
The demand for Propylene Glycol Liquid in the food and pharmaceutical industries continues to grow. As a food additive (E1520), it can not only be used as a moisture retainer for baked goods, but also as a functional solvent for flavors and pigments. In the pharmaceutical field, Propylene Glycol Liquid is an important excipient for oral liquids, ointments and injections, which can both enhance drug solubility and adjust the viscosity of the preparation. In recent years, the rise of inhaled drug delivery systems has further expanded its application scenarios, and its safety as an aerosol medium has been verified by multiple clinical trials.
The personal care market is another important application direction for Propylene Glycol Liquid. In cosmetic formulations, its moisturizing properties are comparable to those of glycerin, but it is less sticky, so it is widely used in products such as lotions and essences. At the same time, Propylene Glycol Liquid has a significant synergistic effect on the preservative system, which can reduce the amount of traditional preservatives, in line with the current consumer trend of “clean beauty”. In the field of oral care, mouthwash containing it can effectively dissolve bactericidal ingredients and improve product stability.
The demand for Propylene Glycol Liquid in the emerging technology field has shown explosive growth. In lithium battery electrolytes, its derivatives can improve ionic conductivity as co-solvents; in biodiesel production, it shows unique advantages as a catalyst carrier for ester exchange reactions. More noteworthy is its application in the synthesis of degradable plastic poly Propylene Glycol Liquid (PPG), which provides an environmentally friendly solution for replacing traditional petroleum-based plastics. Recent studies have also found that Propylene Glycol Liquid has potential application value in carbon dioxide capture technology, and its synergistic effect with amine absorbents can improve carbon capture efficiency.
Compared with similar chemical products, the most prominent advantage of Propylene Glycol Liquid lies in its safety characteristics. Compared with the more toxic ethylene glycol, its median lethal dose (LD50) value is one order of magnitude higher, which makes it irreplaceable in sensitive fields such as food and medicine. This safety feature not only reduces the risk control costs in the production, storage and transportation links, but also facilitates the international certification of end products. For example, the EU REACH regulations have strict restrictions on the content of ethylene glycol in daily chemicals, while Propylene Glycol Liquid is not subject to such restrictions.
From the perspective of physical and chemical properties, Propylene Glycol Liquid shows excellent compatibility. It has the characteristics of both polar and non-polar groups, which enables it to act as a “bridge solvent” to connect the water phase and the oil phase system, which plays a key role in the design of emulsification system formulation. Experimental data show that the emulsion system containing 15-25% Propylene Glycol Liquid can maintain stability for more than 12 months, which is of great significance for extending the shelf life of cosmetics. In high-temperature application scenarios, its thermal stability is significantly better than that of polyols such as glycerol, and only trace degradation products are produced when heated continuously at 180°C for 8 hours.
Environmental friendliness is another core competitiveness of Propylene Glycol Liquid. Its biodegradability can reach more than 80% under standard test conditions, which is much higher than mineral oil solvents. In terms of sustainable production, some companies currently prepare Propylene Glycol Liquid through biofermentation.
In terms of economic benefits, Propylene Glycol Liquid shows good cost balance. Although the unit price is slightly higher than that of ethylene glycol, its comprehensive use cost is more advantageous: in antifreeze applications, its longer replacement cycle can reduce maintenance costs; in the food industry, its versatility can reduce the types of additives and simplify the production process. Market data shows that the comprehensive production cost of industrial coatings using it as the main solvent is 8-12% lower than that of traditional systems, while product performance indicators are improved.
From the perspective of technological development potential, its derivatization space is broad.In recent years, the innovative application of Propylene Glycol Liquid in biomedical engineering has attracted much attention. For example, as a hydrogel matrix for tissue engineering scaffolds, its controllable degradation characteristics provide a new material option for regenerative medicine. With the advancement of green chemical technology, the value of it and its derivatives in the field of sustainable development will continue to be released.
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Related References:
chemicalbook-Propylene Glycol Liquid
Propylene Glycol Liquid Manufacturer
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As an experienced Propylene Glycol Liquid manufacturer and supplier, Look Chemical is committed to producing and selling high quality products.
We cooperate and trade with 6000+ factories around the world, and our high-quality products and excellent services make us enjoy a high reputation internationally.
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If you have a demand for this product, please contact our company’s sales staff, we will provide you with a solution in the shortest time.
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1. For products ≤50kg, we recommend using express delivery, which is usually called DDU service (discounted, convenient).
2. For products ≤500kg, we generally recommend air freight, which is usually called FOB, CFR or CIF service (fast and efficient).
3. For products >500kg, we generally recommend shipping by sea, which is usually called FOB, CFR or CIF service (economical, safe).
4. For high-value products, please choose air or express to ensure the safety of product transportation.
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Frequently Asked Questions(FAQ):
We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.
Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.
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Different quantity has different discount.
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