Octadecylamine Polyoxyethylene Ether AC-1810 is an amine ether surfactant with both nonionic and weakly cationic properties, widely used as a textile leveling agent, pesticide emulsifier, metal corrosion inhibitor, plastic antistatic agent, and other industrial auxiliaries.
Detailed Description
Octadecylamine Polyoxyethylene Ether AC-1810 (CAS: 26635-75-6) is a nonionic surfactant produced by the addition reaction of octadecyl primary amine with ethylene oxide (10 EO moles). Its chemical formula is C₃₈H₇₉NO10, with a molecular weight of approximately 710. Synonyms include PEG-10 octadecylamine, polyoxyethylene (10) octadecylamine, and stearylamine polyoxyethylene (10) ether. At room temperature, the product appears as a light yellow to yellow waxy solid with a melting point of 40~50°C, readily soluble in water and organic solvents, a cloud point of 90°C (1% aqueous solution), and an HLB value of 12.5, indicating good hydrophilic-lipophilic balance.
This product combines the high stability of nonionic surfactants with the adsorption properties of weak cationic surfactants, maintaining excellent performance in acidic, alkaline, and hard water media, making it widely applicable. It exhibits excellent emulsifying ability for various oil phases, effectively stabilizing oil-in-water and water-in-oil systems. It also offers superior wetting and dispersing properties, significantly improving formulation uniformity and stability. Its weak cationic nature imparts certain surface adsorption and antistatic capabilities. Additionally, AC-1810 is a low-foam product with an iodine value ≤ 2 g I₂/100g, indicating a highly saturated molecular chain and good chemical stability.
According to product data from Guoli Chemical, AC-1810 has an active content ≥ 99%, a pH of 6.0~8.0 (1% aqueous solution), 9.0~11.0 (5% aqueous solution), a surface tension as low as 32 mN/m (1g/L, 25°C), and a critical micelle concentration of only 0.01 g/L, demonstrating excellent surface activity and efficiency.
Technical Parameters
| Parameter | Value |
|---|
| Appearance | Light yellow to yellow waxy solid |
| Ionicity | Nonionic (weakly cationic) |
| CAS Number | 26635-75-6 |
| Molecular Formula | C₃₈H₇₉NO₁₀ |
| Molecular Weight | Approx. 710 |
| Active Content | ≥ 99% |
| HLB Value | 12.5 |
| Cloud Point (1% aqueous solution) | 90°C |
| Melting Point | 40~50°C |
| pH (1% aqueous solution) | 6.0~8.0 |
| pH (5% aqueous solution) | 9.0~11.0 |
| Surface Tension (1g/L, 25°C) | 32 mN/m |
| Critical Micelle Concentration (25°C) | 0.01 g/L |
| Hydroxyl Value | 160 mg KOH/g |
| Amine Value | ≤ 5 mg KOH/g |
| Tertiary Amine Content | ≥ 95% |
| Iodine Value | ≤ 2 g I₂/100g |
| Acid Value | ≤ 1 mg KOH/g |
| Moisture Content | ≤ 0.5% |
| Density (25°C) | 0.95 g/cm³ |
| Solubility | Readily soluble in water and organic solvents |
| Flash Point | > 200°C |
| Foam Characteristics | Low foam |
| Packaging Specifications | 50kg/200kg plastic drums, IBC tote tanks |
Application Recommendations
Based on actual application field data from Guoli Chemical products, the main uses of AC-1810 cover six industrial sectors:
- Textile Dyeing and Printing Industry: Used as an efficient leveling agent, it significantly improves the uniform distribution of dyes on fibers, enhancing dyeing quality; it also imparts excellent antistatic properties to fabrics, reducing static buildup during processing and use. Recommended dosage depends on the process; generally, 1~3 g/L in leveling agent formulations.
- Pesticide Industry: Used as an emulsifier in emulsifiable concentrates, oil-in-water emulsions, and microemulsions to effectively disperse and stabilize the active pesticide ingredients, improving wetting, spreading, and penetration of the spray solution, thus enhancing control efficacy. Often used in combination with anionic emulsifiers.
- Household Chemicals: Possesses both emulsifying and solubilizing functions, suitable for creams, lotions, shampoos, and other personal care products, helping to uniformly disperse oil-soluble components and improve transparency and long-term stability of formulations. Recommended usage: 0.5~5%.
- Metalworking Fluids: As a corrosion inhibitor component, it forms a protective film on metal surfaces, effectively inhibiting rust and extending the service life of cutting fluids, rust preventives, etc. Often used in combination with anionic rust inhibitors for synergistic effects.
- Petroleum Industry: Used as a demulsifier component to rapidly break crude oil emulsions, promote oil-water separation, and improve crude oil dehydration and desalting efficiency, applicable in oilfield gathering, transportation, and pre-refining processes.
- Plastics Industry: As an internal antistatic agent added to plastic products, it effectively reduces surface resistance to 10⁸~10¹⁰ Ω, preventing dust attraction and electrostatic discharge risks. Recommended internal addition: 0.3~2%.
Precautions
- Safety Warning: This product is classified as Skin Corrosion/Irritation Category 2 and Serious Eye Damage/Eye Irritation Category 2. H315 Causes skin irritation, H319 Causes serious eye irritation. Wear protective gloves, protective eyewear, and protective clothing during handling. Wash skin thoroughly after handling.
- Usage Recommendations: Since it is a waxy solid at room temperature, it is recommended to preheat and melt it at 40~50°C before addition for accurate metering and rapid dispersion and dissolution.
- Storage Requirements: Store in a cool, dry, well-ventilated warehouse at temperatures between 5~35°C, avoid freezing or overheating, keep away from strong oxidizers and strong acids, and keep containers tightly closed to prevent moisture absorption.
- Compatibility: This product is weakly cationic. When compounding with anionic surfactants, pay attention to the ratio and addition sequence. It is recommended to first add it as a nonionic component to the system to avoid direct mixing that may cause precipitation.
- Emergency Measures: In case of skin contact, immediately rinse with plenty of water. In case of eye contact, immediately rinse with plenty of flowing water or saline for at least 15 minutes and seek medical attention. In case of spillage, absorb with inert materials such as sand and collect.
* The above technical parameters and application data are sourced from the product database of Hai'an Guoli Chemical Co., Ltd. If you need more detailed technical support or sample testing, please contact the Guoli Chemical technical team.
