OPE-108 (also known as: Emulsifier OP-108, Polyoxyethylene Octylphenyl Ether, Polyethylene Glycol Octylphenyl Ether) belongs to the octylphenol polyoxyethylene ether class of nonionic surfactants, with the molecular formula C8H17C6H4O(CH2CH2O)nH (n≈8-10) and a molecular weight of approximately 646. The product appears as a colorless to light yellow transparent liquid, strictly produced by Guoli Chemical, with an active matter content ≥99%. Its HLB value is 13.5, strong hydrophilicity, easily soluble in water and organic solvents. The cloud point of a 1% aqueous solution is 61~67℃, making it a medium to high cloud point surfactant.
The core characteristics of OPE-108 include: excellent emulsifying, wetting, and dispersing abilities, adaptable to various media systems; resistance to acids, alkalis, and hard water, maintaining stable performance under harsh conditions; low foaming tendency, easy to handle, and strong compatibility; can significantly improve the fluidity and surface finish of products. These properties make it suitable as a multifunctional additive in industrial formulations, functioning both as an emulsifying dispersant and a lubricating and wetting agent.
| Parameter Item | Specification | Parameter Item | Specification |
|---|---|---|---|
| Product Type | Nonionic Surfactant | Appearance | Colorless to light yellow transparent liquid |
| CAS Number | 121809-82-3 | Molecular Weight | Approx. 646 |
| HLB Value | 13.5 | Active Matter Content | ≥99% |
| pH Value (1% aqueous solution) | 6.0~8.0 | pH Value (5% aqueous solution) | 6.0~8.0 |
| Cloud Point (1% aqueous solution) | 61~67℃ | Density (20℃) | 1.06 g/cm³ |
| Kinematic Viscosity (25℃) | 250 mm²/s | Refractive Index (20℃) | 1.49 |
| Hydroxyl Value | 85~90 mgKOH/g | Acid Value | ≤0.5 mgKOH/g |
| Surface Tension (25℃, 1% aqueous solution) | 29~30 mN/m | Critical Micelle Concentration (25℃) | 0.26 mmol/L |
| Flash Point (Closed Cup) | >150℃ | Pour Point | <-5℃ |
| Penetration Power (0.5% solution) | ≤60 seconds (Standard Canvas Method) | Foam Characteristics (0.25%, 25℃) | Initial approx. 110mm, after 5 min approx. 85mm (Ross Method) |
| Moisture Content | ≤0.5% | Iodine Value | ≤1 gI₂/100g |
| Saponification Value | ≤2 mgKOH/g | Heavy Metals (as Pb) | ≤20 mg/kg |
| Arsenic Content | ≤2 mg/kg | Solubility | Easily soluble in water and organic solvents |
| Packaging Specifications | 50kg Plastic Drum / 200kg Plastic Drum / IBC Tote | Chemical Stability | Stable at room temperature, avoid contact with strong oxidizing agents |
OPE-108, with its excellent comprehensive performance, is widely used in multiple industrial fields:
OPE-108 has a high HLB value of 13.5, making it suitable as an emulsifier for oil-in-water (O/W) emulsion systems. In coating formulations, the recommended dosage is 0.1%~1.0% of the total formulation; in plastic lubrication systems, 0.2%~0.5%; in adhesives, it can be adjusted according to the required open time and viscosity, typically 0.5%~2.0%. The specific dosage should be determined through trials based on the actual formulation system. Its low foaming tendency makes it particularly suitable for operating environments requiring low foam, such as high-speed stirring or spraying processes. It is recommended to conduct compatibility tests before use to confirm compatibility with other components in the formulation.