Polyethylene glycol (PEG) is a synthetic polymer composed of repeating ethylene oxide units, available in a wide range of molecular weights from liquid to solid forms at room temperature. It is widely used in pharmaceuticals as an excipient for drug delivery and solubility enhancement, in cosmetics and personal care products for humectancy and texture, in food processing as an additive, and in industrial applications including lubricants, hydraulic fluids, and polyurethane foam production. Engineers select PEG for applications requiring water solubility, low toxicity, thermal stability, and compatibility with diverse formulations, making it a versatile choice where biocompatibility and processability are priorities.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Compressive Strength(σc) | 1.991 | MPa | — | ||
Elongation at Break(εf) | 107.7 | - | — | ||
Flexural Strength (MOR)(σf) | 828.3 | kPa | — | ||
Hardness (Vickers)(HV) | 600 | HV | — | ||
Ultimate Tensile Strength(σUTS) | 8.706 | MPa | — | ||
Young's Modulus(E) | 17.82 | MPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 264.2 | K | — | ||
Melting Point / Solidus(Tm) | 328.9 | K | — | ||
Maximum Service Temperature(Tmax) | 609.6 | K | — | ||
Thermal Conductivity(k) | 0.4214 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Band Gap(Eg) | 3.454 | eV | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.455 | - | — |