PEG600MO is a nonionic surfactant produced by the esterification of polyethylene glycol 600 with natural oleic acid. It appears as a light yellow to yellow liquid or paste (freezing point approximately 5~10°C). Its molecular structure features a balanced distribution of hydrophilic groups (polyoxyethylene chain, n≈13) and lipophilic groups (oleate ester group), imparting excellent self-emulsifying ability and broad compatibility. The product is readily soluble in polar solvents such as water, ethanol, and acetone. The cloud point of a 1% aqueous solution is ≥60°C, making it a medium-to-high temperature applicable emulsifier.
The active content of this product is ≥99%, monoester content ≥95%, diester content ≤5%, free alcohol ≤3%, acid value ≤2.0 mgKOH\/g, saponification value 60~80 mgKOH\/g, hydroxyl value 70~95 mgKOH\/g, and iodine value 30~40 gI₂\/100g, indicating controlled unsaturation in the molecule. The pH of a 1% aqueous solution ranges from 5.0 to 7.0, close to the natural pH of human skin, making it suitable for personal care formulations.
In terms of interfacial chemical properties, the surface tension of a 0.1% aqueous solution is approximately 35 mN\/m, and the critical micelle concentration (CMC) is about 0.04 mmol\/L, demonstrating good surface activity efficiency. The product is low-foaming, with a kinematic viscosity of approximately 150 mm²\/s at 40°C and a low-shear viscosity of 150~250 mPa·s at 25°C. The flash point is >200°C, and it is chemically stable under normal conditions, but the product has some hygroscopicity and is not resistant to strong alkalis.
| Parameter Item | Specification\/Index |
|---|---|
| Product Name | PEG600MO \/ Polyethylene Glycol 600 Monooleate |
| CAS Number | 9004-96-0 |
| Molecular Formula | C₁₇H₃₃COO(C₂H₄O)ₙH, n≈13 |
| Molecular Weight | Approximately 860 |
| Ionic Type | Nonionic Surfactant |
| Appearance | Light yellow to yellow liquid or paste |
| Freezing Point | Approximately 5~10°C |
| Active Content | ≥99% |
| Monoester Content | ≥95% |
| Diester Content | ≤5% |
| Free Alcohol | ≤3% |
| Acid Value | ≤2.0 mgKOH\/g |
| Saponification Value | 60~80 mgKOH\/g |
| Hydroxyl Value | 70~95 mgKOH\/g |
| Iodine Value | 30~40 gI₂\/100g |
| Moisture Content | ≤1.0% |
| HLB Value | 13.5 |
| Cloud Point (1% Aqueous Solution) | ≥60°C |
| pH (1% Aqueous Solution) | 5.0~7.0 |
| pH (5% Aqueous Solution) | 4.5~7.5 |
| Surface Tension (0.1% Aqueous Solution) | Approximately 35 mN\/m |
| Critical Micelle Concentration (CMC) | Approximately 0.04 mmol\/L |
| Density | 1.11~1.13 g\/cm³ |
| Kinematic Viscosity (40°C) | Approximately 150 mm²\/s |
| Low Shear Viscosity (25°C) | 150~250 mPa·s |
| Refractive Index | 1.466~1.468 |
| Flash Point | >200°C |
| Solubility | Readily soluble in water, ethanol, acetone |
| Foam Characteristics | Low foaming |
| Hygroscopicity | Yes |
| Alkali Resistance | Not resistant to strong alkalis |
| Chemical Stability | Stable under normal conditions |
| Heavy Metal Content | ≤10 mg\/kg |
| Arsenic Content | ≤2 mg\/kg |
| Packaging Specification | 20 kg woven bag |
Based on the HLB value of 13.5 and core parameters, PEG600MO is most suitable as an O\/W emulsifier and solubilizer: