AC-1820 is a nonionic surfactant prepared by the polymerization reaction of octadecyl fatty amine (stearylamine) as the starting material with ethylene oxide (EO). Its molecular structure consists of two parts: a C18 long-chain alkyl hydrophobic tail derived from stearylamine, and a polyoxyethylene (PEO) hydrophilic head group connected via ether bonds, with an average addition mole number of ethylene oxide of approximately 20.
In chemical classification, this product belongs to the fatty amine polyoxyethylene ether compounds, with aliases including PEG-20 stearylamine, stearylamine polyoxyethylene ether (20), ethoxylated stearylamine, etc. According to the Guoli Chemical product database, AC-1820 is a single effective component with high solid content, without solvent or diluent carriers. It is a functional nonionic surfactant with pH-dependent ionic conversion characteristics—exhibiting nonionic properties under neutral and alkaline conditions, and behaving as a cationic surfactant after protonation of the tertiary amine group in acidic media.
| Parameter | Description |
|---|---|
| Main Component | Polyoxyethylene (20) stearylamine |
| CAS Number | 26635-75-6 |
| Starting Materials | Octadecyl fatty amine (stearylamine) + ethylene oxide |
| EO Addition Number | Approximately 20 moles |
| Ion Type | Nonionic (exhibits cationic characteristics under acidic conditions) |
| Product Form | This parameter is not available |
| Active Content | This parameter is not available |
The component characteristics of AC-1820 determine its wide industrial applicability: its C18 long-chain hydrophobic group provides excellent emulsifying and dispersing abilities, while the 20 EO units impart good water solubility and wetting properties; the cationic characteristics generated after protonation in acidic systems give it strong affinity for negatively charged surfaces such as fibers, metals, and minerals. Therefore, it is particularly suitable for use as an acid dye leveling agent, pesticide emulsifier, metal corrosion inhibitor, and antistatic agent for synthetic materials.