MOA-9 (AEO-9), with the chemical name C12-14 alcohol polyoxyethylene (9) ether (CAS No.: 68439-50-9), commonly known as Peregal O-9 or Leveling Agent O. Its molecular structure achieves a precise balance between the hydrophobic fatty alcohol carbon chain and the hydrophilic polyoxyethylene ether chain segment, with an HLB value of 13.6, making it a typical hydrophilic surfactant. At room temperature (25°C), the product appears as a colorless transparent liquid to white paste, with an active matter content of over 99%. It is miscible with water in any proportion, forming a clear and transparent solution.
As a core regular product of Guoli Chemical, the main advantages of MOA-9 are reflected in four dimensions: first, excellent emulsifying ability, which can significantly reduce oil/water interfacial tension and form stable oil-in-water (O/W) emulsions; second, fast wetting and penetrating properties, with a penetration time of only 5–10 seconds measured by the standard canvas sinking method; third, excellent chemical compatibility, remaining stable in acid, alkali, and hard water media, and can be freely compounded with anionic, cationic, and other nonionic surfactants; fourth, low foaming and easy rinsing, which reduces rinsing cycles in practical applications, saving water and energy.
This product is an environmentally friendly auxiliary with good biodegradability. However, it should be noted that its cloud point is 55–65°C (1% aqueous solution). That is, when the water temperature exceeds the cloud point, MOA-9 will precipitate from the water, causing the solution to become turbid and reducing emulsifying performance. Therefore, in actual formulations and usage processes, the operating temperature should be controlled below its cloud point.
| Parameter Item | Specification Value | Remarks |
|---|---|---|
| Chemical Name | C12-14 Alcohol Polyoxyethylene (9) Ether | — |
| Alias | Peregal O-9, Leveling Agent O, AEO-9 | — |
| CAS No. | 68439-50-9 | — |
| Ionic Type | Nonionic | — |
| Appearance (25°C) | Colorless Transparent Liquid to White Paste | Solidification point approx. 5–10°C |
| Active Matter Content | ≥99.0% | Data source: Guoli Chemical product standard |
| HLB Value | 13.6 | Hydrophilic emulsifier |
| Cloud Point (1% Aqueous Solution) | 55–65°C | Becomes turbid above this temperature |
| pH Value (1%/5% Aqueous Solution) | 5.0–7.0 | — |
| Hydroxyl Value | 85–100 mg KOH/g | — |
| Surface Tension (0.1%, 25°C) | 28–32 mN/m | — |
| Critical Micelle Concentration (25°C) | 0.03–0.05 g/L | Micelles form at low dosage |
| Penetrating Power (0.1% Aqueous Solution) | 5–10 seconds | Standard canvas sinking method |
| Acid Value | ≤0.5 mg KOH/g | — |
| Iodine Value | ≤0.5 gI₂/100g | Low unsaturation |
| Density (25°C) | 1.00–1.05 g/cm³ | — |
| Kinematic Viscosity (40°C) | 100–200 mm²/s | — |
| Refractive Index | 1.453–1.457 | — |
| Water Content | ≤0.5% | — |
| Free Alcohol | ≤2.0% | — |
| Heavy Metals (as Pb) | ≤10 mg/kg | — |
| Arsenic (As) | ≤2 mg/kg | — |
| Flash Point | ＞150°C | — |
| Foam Characteristics | Low Foaming | — |
| Chemical Stability | Stable in dilute acid and alkali solutions | May hydrolyze under high temperature and strong alkali |
| Packaging Specifications | 50kg Plastic Drum / 200kg Plastic Drum / IBC Tote | — |
Based on the hydrophilic emulsifying characteristics and HLB value of 13.6 for MOA-9, the following typical application scenarios are recommended: