Polyether L-44 (Poloxamer 124) is a high molecular weight nonionic surfactant synthesized through the copolymerization of ethylene oxide and propylene oxide. Its molecular structure is a typical ABA-type triblock copolymer, namely polyoxyethylene (PEO)-polyoxypropylene (PPO)-polyoxyethylene (PEO), with the molecular formula expressed as HO(C₂H₄O)ₐ(C₃H₆O)₆(C₂H₄O)ₐH, where a≈12, b≈20, and the molecular weight is approximately 2200. This structure determines its excellent surface activity—the polyoxypropylene chain segment in the molecule acts as a hydrophobic group, while the polyoxyethylene chain segments on both sides act as hydrophilic groups, granting it both good water solubility and emulsifying ability.
The product appears as a colorless to light yellow transparent liquid, with an active ingredient content of ≥99%, belonging to high-purity nonionic surfactants. Since the molecular structure contains no ionic groups, it has strong chemical stability and can withstand acidic, alkaline, and hard water environments without easily losing efficacy. According to technical parameters provided by the Guoli Chemical Database, its HLB value is 16, indicating strong hydrophilicity, a cloud point of approximately 70°C (1% aqueous solution), surface tension of about 38 mN/m (1% aqueous solution, 25°C), and critical micelle concentration of about 0.004% (w/v), demonstrating excellent surface activity and micelle formation ability.
| Parameter Name | Value | Description |
|---|---|---|
| CAS Number | 9003-11-6 | General chemical number for Poloxamer 124 |
| Molecular Formula | HO(C₂H₄O)ₐ(C₃H₆O)₆(C₂H₄O)ₐH | a≈12, b≈20 |
| Molecular Weight | Approximately 2200 | Block copolymer of ethylene oxide and propylene oxide |
| Ionic Type | Nonionic | — |
| Active Ingredient | ≥99% | Measured data, from Guoli Chemical Database |
| HLB Value | 16 | Strong hydrophilicity |
| Cloud Point (1% Aqueous Solution) | Approximately 70°C | — |
| Hydroxyl Value | 45-55 mg KOH/g | — |
| Acid Value | ≤0.5 mg KOH/g | — |
| Moisture Content | ≤0.5% | — |
| Density (25°C) | 1.05-1.06 g/cm³ | — |
| Kinematic Viscosity (25°C) | Approximately 260 mm²/s | — |
| Appearance | Colorless to light yellow transparent liquid | Observed at 25°C |
| Solubility | Soluble in water, ethanol, ether, etc. | — |
Based on its chemical composition and performance characteristics, Polyether L-44 is suitable for the following fields:
This product is not classified as a hazardous chemical, is non-flammable, has very low acute oral toxicity (rat LD₅₀ > 5,000 mg/kg), and is non-irritating to the skin, but may cause mild to moderate eye irritation. It is recommended to wear chemical safety goggles during operation and avoid prolonged direct contact with eyes. The product should be stored in a cool, dry, well-ventilated area, with a storage temperature recommended not to exceed 40°C, avoiding high temperatures and direct sunlight.