MOA-23, chemical name C12-14 fatty alcohol polyoxyethylene (23) ether (CAS No.: 68439-50-9), is a high-adduct nonionic surfactant polymerized from natural fatty alcohols and ethylene oxide. Its molecular weight is about 1200, and it appears as a white to slightly yellow waxy solid with a melting point between 40~45°C. The product has an active matter content of no less than 99%, demonstrating extremely high purity and usage efficiency.
Due to its long polyoxyethylene chain (n≈23), this product exhibits excellent water solubility, high cloud point (>100°C), and outstanding stability against acids, alkalis, and hard water. Its surface activity is mild, with an interfacial tension of about 32 mN/m and a critical micelle concentration (CMC) of about 0.04 g/L, forming stable and fine emulsions with low foam, making it easy to rinse. The pH value (1% aqueous solution) is weakly acidic to neutral (5.0~7.0), with slight irritation to skin and eyes (H315/H319).
With its HLB value of about 16.5, MOA-23 performs excellently in O/W emulsification, dispersion, and solubilization. Additionally, it has good biodegradability and batch quality stability, meeting the stringent requirements of modern environmental protection and industrial production for fine chemicals. Its flash point is above 200°C, non-flammable at room temperature, but ventilation and protection are still needed during high-temperature operation or storage.
| Parameter Item | Index/Value |
|---|---|
| Chemical Name | C12-14 Fatty Alcohol Polyoxyethylene (23) Ether |
| CAS No. | 68439-50-9 |
| Ion Type | Nonionic |
| Appearance (25°C) | White to Slightly Yellow Waxy Solid |
| Molecular Weight | About 1200 |
| Active Matter Content | ≥99% |
| HLB Value | About 16.5 |
| Cloud Point (1% Aqueous Solution) | >100°C |
| Melting Point | About 40~45°C |
| pH Value (1% Aqueous Solution) | 5.0~7.0 |
| Moisture Content | ≤1.0% |
| Hydroxyl Value | 45~52 mgKOH/g |
| Acid Value | ≤0.5 mgKOH/g |
| Iodine Value | ≤1.0 gI₂/100g |
| Surface Tension (0.1%, 25°C) | About 32 mN/m |
| Critical Micelle Concentration (CMC, 25°C) | About 0.04 g/L |
| Density (25°C, Solid) | About 1.0 g/cm³ |
| Kinematic Viscosity (50°C) | About 50 mm²/s |
| Refractive Index (40°C) | About 1.455 |
| Flash Point (Open Cup Method) | >200°C |
| Solubility | Easily Soluble in Water |
| Foam Characteristics | Low Foam |
| Heavy Metal Content | ≤10 mg/kg |
| Free Alcohol | ≤1.0% |
| Saponification Value | ≤2.0 mgKOH/g |
Note: The above data are from actual test values of Guoli Chemical product database.
Due to its high HLB value and high cloud point, MOA-23 is particularly suitable for high-temperature operation systems and the construction of O/W (oil-in-water) emulsion systems. Recommended application scenarios and dosage references are as follows: