The chemical nature of AC-1860 is polyethylene glycol monooctadecylamine ether, with CAS number 26635-92-7. Its molecular structure consists of two parts: one end is octadecyl fatty amine (stearylamine) derived from natural oils or synthetic sources as the hydrophobic group, and the other end is a polyoxyethylene hydrophilic chain with an average polymerization degree of 60 ethylene oxide (EO) units. This structure gives it nonionic surfactant properties under normal conditions, while exhibiting cationic characteristics in acidic media due to protonation of the amine group.
In terms of molecular composition, this product is an industrial-grade surfactant with a single main component, typically supplied at a high concentration. Its long hydrophilic chain (60 EO) imparts excellent water solubility and a high cloud point. Meanwhile, the long-chain alkyl group (C18) provides strong affinity for nonpolar substances such as oils and waxes, thus offering outstanding emulsifying, wetting, and dispersing properties.
Its aliases also include: PEG-60 Stearamine, PEG-60 Stearyl Amine, Polyoxyethylene (60) Octadecylamine, etc., widely used in textile dyeing and printing, pesticide emulsification, metalworking fluids, chemical fiber oil agents, and industrial cleaning.
| Parameter | Data |
|---|---|
| Chemical Name | Octadecylamine Polyoxyethylene (60) Ether |
| CAS Number | 26635-92-7 |
| Main Component Structure | C₁₈H₃₇NH(CH₂CH₂O)₆₀H |
| Ionic Type | Nonionic (cationic in acidic medium) |
| Appearance | Light yellow to yellowish-brown solid or paste |
| pH (1% aqueous solution) | 6.0 – 8.5 |
| Solubility | Easily soluble in water and various organic solvents |
| EO Addition Number | Approximately 60 |
| Hydrophobic Group | Octadecyl (C18, derived from stearylamine) |
The long EO chain structure of AC-1860 provides excellent solubility and chemical stability in aqueous systems, making it particularly suitable as a leveling agent for high-temperature and high-pressure dyeing, an emulsifier for pesticide emulsifiable concentrates, and an emulsifying anti-rust component in metalworking fluids. It is typically used as a primary or auxiliary emulsifier in formulations, with recommended dosages determined through experiments based on specific processes. Its resistance to acid, alkali, and hard water ensures stable performance under complex conditions.