The full chemical name of OPE-105 is Octylphenol Ethoxylate, with an average ethoxylation degree of 10.5 EO units, hence it is often labeled as "Octylphenol Polyoxyethylene (10.5) Ether". It belongs to the category of nonionic surfactants, with a molecular structure consisting of a hydrophobic octylphenyl group and a hydrophilic polyoxyethylene ether chain. This amphiphilic structure endows the product with excellent emulsifying, wetting, and dispersing properties.
The product appears as a colorless to light yellow viscous liquid. According to authoritative data provided by the Guoli Chemical Database, the active content of its main component is ≥98.0%, with a free alcohol content ≤0.5%, indicating a high purity level among similar products. The average molecular formula is represented as C₃₅H₆₄O₁₁.₅, with an average molecular weight of approximately 668.
The following are the key components and technical specifications of OPE-105 (data source: Guoli Chemical Product Database):
| Parameter Item | Specification/Value |
|---|---|
| Chemical Name | Octylphenol Ethoxylate |
| CAS Number | 121809-82-3 |
| Ionic Type | Nonionic Surfactant |
| Average Molecular Formula | C₃₅H₆₄O₁₁.₅ |
| Average Molecular Weight | Approximately 668 |
| Active Content | ≥98.0% |
| Free Alcohol Content | ≤0.5% |
| HLB Value | 13.5 |
| Moisture Content | ≤0.5% |
| pH Value (1% Aqueous Solution) | 6.0~8.0 |
| Density (25°C) | Approximately 1.06 g/cm³ |
From a formulation perspective, the main component of OPE-105, octylphenol ethoxylate, exhibits the following features: the hydrophobic group is an octylphenyl group (C₈ alkyl chain attached to a benzene ring), and the hydrophilic chain is a polyoxyethylene chain with an average of 10.5 EO units. This structure gives it an HLB value of 13.5, making it a hydrophilic emulsifier that is easily soluble in water and various organic solvents. The product maintains stable interfacial activity under acidic, alkaline, and high-hardness water conditions, resists hydrolysis and deactivation, and has strong formulation compatibility, allowing it to be used in combination with anionic, cationic, and other nonionic surfactants.