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Nonionic triblock copolymer based on propylene oxide (PO) and ethylene oxide (EO) with reverse PEO–PPO–PEO architecture.
Excellent thermal stability and low-temperature performance in aqueous systems.
Highly effective wetting, dispersing, and solubilizing agent for hydrophobic actives.
Low foaming profile suitable for high-shear and industrial cleaning applications.
Readily biodegradable under OECD 301 standard conditions, supporting sustainable formulation goals.
Industrial and institutional (I&I) hard-surface cleaners.
Agrochemical formulations for suspension concentrates (SC) and emulsifiable concentrates (EC).
Personal care emulsions requiring mildness and low irritation potential.
Pharmaceutical solubilization aids in oral liquid and topical dosage forms.
Specialty coatings and ink dispersants for improved pigment stabilization.
| Chemical Type | Nonionic triblock copolymer (reverse PEO–PPO–PEO) |
| Product Form | Pale yellow to amber viscous liquid |
| Appearance | Clear to slightly hazy, homogeneous liquid at 25°C |
| pH (1% aqueous solution) | 6.0 – 7.5 |
| Cloud Point (1% aqueous solution) | ~85–90°C |
| Solubility | Freely soluble in water, ethanol, and common organic solvents |
| Primary Applications | Wetting, dispersion, solubilization, emulsification |
| Key Features | Low foaming, thermoresponsive behavior, high HLB (~23–25) |
Q1: What is the primary functional role of Pluronic RPE 2035 in formulations?
A: Pluronic RPE 2035 functions primarily as a nonionic surfactant and solubilizer, offering effective emulsification, wetting, and micellar solubilization capabilities—especially useful in aqueous systems requiring stabilization of hydrophobic actives or oils.
Q2: Is Pluronic RPE 2035 suitable for use in personal care or cosmetic applications?
A: Yes, it is commonly used in rinse-off and leave-on personal care formulations due to its mildness, low irritation potential, and compatibility with a broad range of ingredients—including electrolytes and preservatives—though final suitability depends on full formulation testing and regulatory compliance for the target market.
Q3: How does Pluronic RPE 2035 differ from other Pluronic grades like F127 or L64?
A: RPE 2035 features a unique reverse-phase ethylene oxide–propylene oxide block architecture, resulting in higher hydrophobic character and enhanced surface activity at lower temperatures compared to conventional Pluronics—making it particularly effective in cold-process formulations and systems requiring rapid wetting or low-foaming performance.
Q4: What are typical handling and storage recommendations for this surfactant?
A: Store in original sealed containers at temperatures between 10°C and 30°C, away from direct sunlight and moisture. Avoid freezing, as prolonged exposure to sub-zero conditions may affect physical uniformity. Prior to use, ensure thorough mixing if phase separation or clouding is observed after storage.
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