Octadecylamine Polyoxyethylene Ether AC-1820 (CAS No.: 26635-75-6) is a non-ionic surfactant produced by reacting octadecyl fatty amine with ethylene oxide. Its core differentiating advantage lies in its pH-dependent ionic conversion feature: under neutral and alkaline conditions, it functions as a stable non-ionic surfactant; when the system turns acidic, the tertiary amine groups in the molecule undergo protonation, imparting strong affinity to substrates characteristic of cationic surfactants. This property endows the product with exceptional application flexibility in complex formulations, meeting dual requirements for emulsification stability and substrate adsorption.
Thanks to its unique molecular structure, AC-1820 serves as an efficient leveling agent in acidic dye baths, effectively controlling dye uptake rate and preventing uneven dyeing; in pesticide formulations, it acts as an emulsifier providing excellent emulsion stability; in industrial cleaning and metalworking, it combines emulsification and corrosion inhibition, forming a dense protective film on metal surfaces to inhibit acid corrosion of carbon steel, copper, and other metals.
Additionally, this product can be used as an antistatic agent for synthetic materials, a collector in mineral flotation, and an asphalt emulsifier. It is widely applied across industries such as textile dyeing and printing, agricultural chemicals, industrial cleaning, metalworking, and road construction, making it an indispensable functional additive in numerous fine chemical formulations.
| Parameter | Description |
|---|---|
| Product Name | Octadecylamine Polyoxyethylene Ether AC-1820 |
| CAS No. | 26635-75-6 |
| Synonyms | PEG-20 Stearylamine, Stearylamine Polyoxyethylene Ether (20), Polyoxyethylene (20) Octadecylamine, Ethoxylated Stearylamine, Antistatic Agent AC-1820, Leveling Agent AC-1820 |
| Surfactant Type | Non-ionic (exhibits cationic character under acidic conditions) |
| Starting Raw Material | Octadecyl fatty amine + Ethylene oxide |
| Ion Conversion Condition | Protonation in acidic media → cationic character; Neutral/alkaline → non-ionic character |
| Core Functions | Emulsifying, wetting, dispersing, leveling, corrosion inhibition, antistatic |
| Hard Water Resistance | High tolerance |
| Acid/Alkali Tolerance | High tolerance |
This product has skin irritation (H315) and serious eye irritation (H319) properties, and may cause harmful effects to aquatic life (H402). During handling, chemical protective gloves (e.g., nitrile rubber), safety goggles, and protective clothing must be worn, and ensure adequate ventilation in the work area. In case of skin or eye contact, rinse immediately with plenty of water for at least 15 minutes. Do not discharge untreated material directly into water bodies. Refer to the Safety Data Sheet for detailed safety information.