Polyethylene glycol PEG-600 (CAS No.: 25322-68-3) is a linear high-molecular compound obtained by stepwise addition polymerization of ethylene oxide with water or ethylene glycol. Its molecular formula is HO(C2H4O)nH, where n is approximately 12~14, and the molecular weight ranges from 570 to 630. At room temperature, it appears as a colorless to slightly yellow viscous liquid, which solidifies into a waxy semi-solid at low temperatures (15~25°C). This product is a nonionic surfactant with high tolerance to acids, bases, and hard water, exhibiting excellent chemical stability and is not easily decomposed at room temperature.
Due to the ability of ether oxygen groups to form hydrogen bonds with water molecules, PEG-600 has significant hygroscopicity and excellent water solubility. It is miscible with water in any proportion and also soluble in organic solvents such as ethanol and acetone. Its cloud point exceeds 100°C (1% aqueous solution), indicating that the system remains clear under boiling water at normal pressure, a characteristic that offers unique advantages in processes requiring high-temperature operations. The product has low foaming properties, with a surface tension of approximately 44 mN\/m, making it a low-foam additive suitable for industrial applications where excessive foam is undesirable.
This product is an industrial-grade product manufactured by Guoli Chemical in strict accordance with standards, with an active content of ≥99%, moisture content controlled at ≤1.0%, total heavy metals ≤20 mg\/kg, and arsenic content ≤2 mg\/kg, meeting the quality requirements for various fields such as pharmaceuticals and daily chemicals. Available packaging options include 50kg plastic drums, 200kg plastic drums, and IBC totes.
The following is the main physicochemical technical parameter table of polyethylene glycol PEG-600 produced by Haian Guoli Chemical Co., Ltd. (Data source: Guoli Chemical product database):
| Parameter Item | Indicator\/Value |
|---|---|
| CAS No. | 25322-68-3 |
| Molecular Formula | HO(C2H4O)nH, n ≈ 12~14 |
| Molecular Weight | 570 - 630 |
| Appearance | Colorless to slightly yellow transparent liquid or semi-solid (waxy at low temperatures) |
| Ion Type | Nonionic |
| Active Content \/ Solid Content | ≥99% |
| Moisture | ≤1.0% |
| Density (25°C) | 1.11 - 1.13 g\/cm³ |
| Melting Point \/ Freezing Point | 15 - 25°C |
| Refractive Index | 1.466 - 1.468 |
| Kinematic Viscosity (40°C) | 13 - 17 mm²\/s |
| Low Shear Viscosity (25°C) | 100 - 150 mPa·s |
| Flash Point | ≥220°C |
| HLB Value | 19 |
| Cloud Point (1% Aqueous Solution) | >100°C |
| pH Value (1% Aqueous Solution) | 5.0 - 7.0 |
| pH Value (5% Aqueous Solution) | 4.5 - 7.5 |
| Surface Tension (1% Aqueous Solution, 25°C) | Approximately 44 mN\/m |
| Hydroxyl Value | 178 - 196 mgKOH\/g |
| Acid Value | ≤0.5 mgKOH\/g |
| Iodine Value | ≤0.1 gI2\/100g |
| Free Alcohol | ≤0.1% |
| Heavy Metals | ≤20 mg\/kg |
| Arsenic | ≤2 mg\/kg |
| Foaming Property | Low foam |
| Hygroscopicity | Hygroscopic |
| Chemical Stability | Stable at room temperature, not easily decomposed |
| Alkali Resistance | Stable |
| Solubility | Easily soluble in water, ethanol, acetone |
| CMC (Critical Micelle Concentration) | Not available |
| Saponification Value | Not available |
| Penetration Power | Not available |
Based on the above physicochemical parameters, PEG-600 offers outstanding advantages in the following application scenarios: