Emulsifier MOA-3B (fatty alcohol polyoxyethylene (3) ether) is a nonionic surfactant with the chemical formula C12-14H25-29O(C2H4O)nH (n≈3) and a molecular weight of about 318. The product appears as a colorless to slightly yellow transparent liquid with a pour point of approximately -5°C, maintaining good fluidity and operational convenience even at low temperatures.
The core feature of this product is its HLB value between 6 and 7, making it a lipophilic surfactant that is easily soluble in oils and organic solvents, dispersible in water, but insoluble in water, thus no cloud point data. Its active content is as high as ≥99%, with free alcohol content ≤1.0%, ensuring stable and reliable performance in applications. The product has low foam characteristics, excellent penetrating power, a surface tension of about 28 mN/m (1% aqueous solution, 25°C), and a critical micelle concentration of approximately 8×10⁻⁵ mol/L, demonstrating outstanding interfacial activity in practical applications.
In terms of chemical stability, MOA-3B performs well under general acid-base environments (generally alkaline resistant), but should avoid contact with strong bases and strong oxidants. The product has low hygroscopicity, and storage temperature is recommended between 5°C and 40°C. The flash point is ≥150°C (open cup). It is not classified as a flammable liquid, but may release irritating vapors at high temperatures, so ventilation is still required during operation.
| Parameter Item | Value/Index | Remarks |
|---|---|---|
| Product Type | Nonionic Surfactant | Fatty Alcohol Polyoxyethylene Ether Type |
| CAS Number | N/A | — |
| Molecular Formula | C12-14H25-29O(C2H4O)nH, n≈3 | Carbon chain distribution C12~C14 |
| Molecular Weight | Approx. 318 | — |
| Appearance | Colorless to slightly yellow transparent liquid | Visual at 20°C |
| Active Content | ≥99% | High purity |
| HLB Value | 6~7 | Lipophilic |
| pH Value (1% aqueous solution) | 5.0~7.0 | Near neutral |
| pH Value (5% aqueous solution) | 5.0~7.0 | — |
| Density (20°C) | 0.92~0.93 g/cm³ | — |
| Kinematic Viscosity (40°C) | About 30 mm²/s | — |
| Low Shear Viscosity (25°C) | About 30 mPa·s | — |
| Refractive Index (20°C) | 1.455~1.460 | — |
| Pour Point | Approx. -5°C | Good low-temperature fluidity |
| Flash Point (Open Cup) | ≥150°C | Typical range 160~200°C |
| Surface Tension (1% aqueous solution, 25°C) | About 28 mN/m | Excellent interfacial activity |
| Critical Micelle Concentration (CMC) | Approx. 8×10⁻⁵ mol/L | — |
| Hydroxyl Value | 160~175 mgKOH/g | — |
| Acid Value | ≤0.5 mgKOH/g | — |
| Saponification Value | ≤1.0 mgKOH/g | — |
| Iodine Value | ≤1.0 gI₂/100g | Low unsaturation |
| Unsaturation | ≤0.05 mol/kg | — |
| Moisture Content | ≤1.0% | — |
| Free Alcohol | ≤1.0% | — |
| Heavy Metal Content | ≤10 ppm | — |
| Arsenic Content | ≤2 ppm | — |
| Cloud Point | Insoluble in water, no cloud point | Oil-soluble characteristic |
| Solubility | Easily soluble in oils and organic solvents, dispersible in water | — |
| Foam Performance | Low foam | Suitable for low-foam formulation systems |
| Penetrating Power | Excellent | — |
| Chemical Stability | Stable, avoid strong bases and strong oxidants | Generally alkali resistant |
| Acute Oral Toxicity (Rat) | LD₅₀ ＞2000 mg/kg | Low toxicity |
| Packaging Specifications | 50kg plastic drum / 200kg plastic drum / IBC tote | — |
Based on the above physicochemical parameter characteristics (HLB value 6-7, good oil solubility, low foam, high purity), MOA-3B is particularly suitable for the following systems: