Overview of PEG Polyethylene Glycol
PEG Polyethylene glycol with lower relative molecular weight (PEG200~600) has solubilization, solubilization, moisture retention, heat carrier performance. Relatively high molecular weight is commonly used as matrix, play a role in regulating viscosity, melting point, stability system.PEG Polyethylene glycol is an addition polymer with water. Those with a molecular weight below 700 are colorless, odorless, non-volatile, viscous liquids at 20°C, and are slightly hygroscopic. Those with molecular weights between 700 and 900 are semi-solid. Those with a molecular weight of 1,000 and above are light white waxy solids or flake-like paraffin wax or fluid powder. Miscible in water, soluble in many organic solvents, such as alcohols, ketones, chloroform, glycerides and aromatic hydrocarbons; insoluble in most aliphatic hydrocarbons and ether. As the molecular weight increases, its water solubility, vapor pressure, water absorption and solubility in organic solvents decrease accordingly, while the freezing point, relative density, flash point and viscosity increase accordingly.
Specifications of PEG Polyethylene Glycol
| Property |
Specification |
| Appearance |
White to off-white flakes, powder, or granules; clear, colorless to slightly yellow liquid (depending on the molecular weight) |
| Molecular Weight |
Variable, typically from 200 to several thousand g/mol |
| pH (1% solution in water at 25°C) |
4.5 - 7.0 |
| Water Content (%) |
Max. 0.3 (for solid forms) |
| Melting Point (°C) |
Varies with molecular weight, e.g., PEG 400: 4-8°C, PEG 6000: 62-64°C |
| Flash Point (°C, closed cup) |
> 200 (for most grades) |
| Solubility |
Soluble in water, ethanol, and many organic solvents; insoluble in aliphatic hydrocarbons |
| Density (g/cm³ at 20°C) |
Varies, e.g., PEG 400: ~1.125, PEG 6000: ~1.395 |
| Viscosity (mPa·s at 25°C) |
Varies, e.g., PEG 400: ~110, PEG 6000: ~10,000 |
Product Performance of PEG Polyethylene Glycol
- Oxidized polyethylene has high chemical stability and can resist corrosion by oxygen, acid, alkali and other chemical substances.
- Oxidized polyethylene is a solid, colorless or yellowish powder or granule commonly used in coatings, adhesives and plastic additives.
- Flame retardancy: Oxidized polyethylene has good flame retardant properties and can effectively reduce the occurrence of fire accidents.
Chemical Properties of PEG Polyethylene Glycol
Density: 0,88 g/cm3
Density: 1.27g/mL at 25°C
Melting point: 64-66°C
Boiling point: >250°C
Flash point: 270 °C
Water solubility: Soluble in water.
Vapor pressure: <0.01 mm Hg (20 °C)
Vapor density: >1 (vs air)
Solubility: H2O: 50mg/ml, clear, colorless
Refractive index: n20/D 1.469
PH value: 5.5-7.0 (25℃, 50mg/mL in H2O)
Storage conditions: 2-8°C
Stability: Stable. Incompatible with strong oxidizing agents.
Sensitivity: Hygroscopic
Appearance: waxy solid
Specific gravity: 1.128
Color: White to very pale yellow
Application of PEG Polyethylene Glycol
PEG Polyethylene glycol is a colorless viscous liquid or white solid.Soluble in water and many organic solvents, easily soluble in aromatic hydrocarbons, and slightly soluble in aliphatic hydrocarbons.Certain metal salts are soluble in PEG Polyethylene glycol at approximately 100°C and remain stable at room temperature. These metal salts include calcium, cobalt, copper, iron, magnesium, manganese, tin and zinc chlorides, potassium iodide and ethyl mercury. It can be used as plasticizer, softener, wetting agent, lubricant, solvent, adhesive, and can also be used to prepare spices and pharmaceutical preparations.
- Coatings and adhesives: PEG Polyethylene glycol can be used to prepare coatings and adhesives with good heat resistance and weather resistance, and is commonly used in automotive coatings, ship coatings and other fields.
Applications of PEG Polyethylene glycol
- Rubber and plastic additives: PEG Polyethylene glycol, as an important additive, is often used to improve the thermal stability and anti-aging properties of plastics and rubber.
- Textile treatment agent: PEG Polyethylene glycol can be used in the twisting, processing and refining of textiles to improve the softness and washability of textiles.
Company Profile
Luoyang Tongrun Nano Technology Co., Ltd. (TRUNNANO) is a confident global supplier and manufacturer of chemical materials with over 12 years of rich experience, focusing on providing ultra-high quality chemicals and nanomaterials. Our product range includes boride powders, nitride powders, graphite powders, sulfide powders, 3D printing powders, and surfactant.
The company has a professional technical team and quality inspection department, well-equipped laboratories and advanced testing equipment. In order to ensure that our customers can get the best product experience, we have also set up a professional after-sales customer service center.
If you are looking for a high quality supplier of PEG polyethylene lgycol , we sincerely invite you to contact us or click on related products to inquire
Packing of PEG Polyethylene Glycol
We have many kinds of packing, depending on PEG polyethylene lgycol quantity.
PEG polyethylene lgycol packing: 100g, 1kg, 10kg, etc.
Payment methods of PEG Polyethylene Glycol
L/C, T/T, Western Union, Paypal, Credit Card etc.
Shipment of PEG Polyethylene Glycol
Once payment is received, by sea, by air or by express as soon as possible.
FAQs of PEG Polyethylene Glycol
What is Polyethylene Glycol (PEG) used for?
PEG is used in a wide range of applications, including as a solvent, plasticizer, softener, and moisture-carrier in cosmetics. In pharmaceuticals, it is used as an excipient in tablets, capsules, and other drug formulations. It also serves as a base for ointments and suppositories. In industry, PEG acts as a lubricant, surfactant, and humectant.
Is Polyethylene Glycol safe for use in cosmetics and pharmaceuticals?
PEG is generally considered safe for use in both cosmetics and pharmaceuticals. However, there have been concerns regarding potential impurities, such as ethylene oxide and 1,4-dioxane, which may be present in trace amounts. Regulatory bodies like the FDA and the European Medicines Agency monitor its safety and set guidelines for acceptable levels of these impurities.
How does the molecular weight of PEG affect its properties?
The molecular weight of PEG significantly influences its physical properties, such as viscosity, melting point, and solubility. Lower molecular weight PEGs (e.g., PEG 200, 400) are more fluid and have lower melting points, making them suitable for liquid formulations. Higher molecular weight PEGs (e.g., PEG 6000, 8000) are more solid and have higher melting points, often used in solid or semi-solid formulations.
Can PEG be used in natural or organic products?
PEG is a synthetic polymer, and its use in natural or organic products is generally restricted. Certifications like COSMOS and USDA Organic do not allow the inclusion of PEG in their certified products due to its synthetic nature. However, some less stringent standards might permit its use, so it's important to check the specific requirements of the certification body.
What is the shelf life of Polyethylene Glycol?
The shelf life of PEG, when stored under proper conditions (cool, dry place, away from direct sunlight), is typically around 2 years. For specific grades, always refer to the manufacturer’s recommendations for storage and expiration dates to ensure the product remains effective.
