Polyether L-44 (Poloxamer 124 / Poloxamer 124) is a high-performance nonionic polyoxyethylene-polyoxypropylene block copolymer produced by Guoli Chemical. Its molecular structure is HO(C₂H₄O)ₐ(C₃H₆O)b(C₂H₄O)ₐH, where a≈12, b≈20, with a molecular weight of approximately 2200. The product appears as a colorless to slightly yellow transparent liquid, with CAS number 9003-11-6.
This product has a high HLB value (16), strong hydrophilicity, and is soluble in various solvents such as water, ethanol, and ether. The cloud point in a 1% aqueous solution is approximately 70°C, indicating good solubility and surface activity within room temperature to moderate temperature ranges. Its critical micelle concentration (CMC) is approximately 0.004% (w/v), meaning it can effectively reduce the surface tension of the system at extremely low concentrations. The surface tension of a 1% aqueous solution at 25°C is approximately 38 mN/m.
Polyether L-44 has good chemical stability and is resistant to acids, alkalis, and hard water environments. It has low foaming characteristics and excellent wetting and penetrating capabilities. Its density is 1.05~1.06 g/cm³ (25°C), kinematic viscosity is approximately 260 mm²/s (25°C), refractive index is 1.453~1.457 (25°C), flash point (closed cup) is >200°C, and pour point is < -20°C. All indicators comply with Guoli Chemical's enterprise standards, with an active ingredient content of ≥99%.
| Parameter Item | Specification Value |
|---|---|
| Product Name / Alias | Polyether L-44 / Poloxamer 124 / Pluronic L-44 |
| CAS Number | 9003-11-6 |
| Ionic Type | Nonionic |
| Appearance | Colorless to slightly yellow transparent liquid |
| Molecular Formula | HO(C₂H₄O)ₐ(C₃H₆O)b(C₂H₄O)ₐH (a≈12, b≈20) |
| Molecular Weight | Approx. 2200 |
| Active Content | ≥99% |
| HLB Value | 16 |
| Cloud Point (1% Aqueous Solution) | Approx. 70°C |
| Density (25°C) | 1.05~1.06 g/cm³ |
| Kinematic Viscosity (25°C) | Approx. 260 mm²/s |
| Refractive Index (25°C) | 1.453~1.457 |
| pH Value (1% Aqueous Solution) | 5.0~7.0 |
| Surface Tension (1% Aqueous Solution, 25°C) | Approx. 38 mN/m |
| Critical Micelle Concentration (CMC) | Approx. 0.004% (w/v) |
| Hydroxyl Value | 45~55 mg KOH/g |
| Acid Value | ≤0.5 mg KOH/g |
| Saponification Value | ≤1 |
| Iodine Value | ≤1 |
| Water Content | ≤0.5% |
| Flash Point (Closed Cup) | >200°C |
| Pour Point | < -20°C |
| Solubility | Soluble in water, ethanol, ether, etc. |
| Foaming Characteristics | Low foaming |
| Heavy Metal Content | ≤10 ppm |
| Arsenic Content | ≤2 ppm |
| Chemical Stability | Stable, incompatible with strong oxidizing agents |