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Nonionic triblock copolymer based on propylene oxide (PO) and ethylene oxide (EO) with reverse PEO–PPO–PEO architecture.
Enhanced thermal stability and low-temperature performance compared to conventional Pluronic® grades.
Excellent emulsification and solubilization capacity for hydrophobic actives in aqueous systems.
Low foaming profile suitable for high-shear and industrial cleaning applications.
Biodegradable under OECD 301 standards and compliant with EU Ecolabel criteria for surfactants.
Industrial and institutional (I&I) hard-surface cleaners.
Agrochemical formulations requiring stable oil-in-water emulsions.
Pharmaceutical solubilizers and excipients in liquid dosage forms.
Personal care products including low-foam shampoos and cleansing gels.
Oilfield demulsifiers and pipeline flow improvers.
| Chemical Type | Nonionic triblock copolymer (reverse PEO–PPO–PEO) |
| Product Form | Liquid |
| Appearance | Pale yellow to colorless viscous liquid |
| pH (1% aqueous solution, 25 °C) | 5.5 – 7.0 |
| Cloud Point (1% aqueous solution) | ~68 °C |
| Hydrophilic-Lipophilic Balance (HLB) | ~14.5 |
| Solubility | Freely soluble in water, ethanol, and common organic solvents |
| Storage Stability | Stable for ≥24 months at 5–30 °C in sealed original container |
Q1: What is the primary functional role of Pluronic RPE 2525 in formulations?
A: Pluronic RPE 2525 is a nonionic triblock copolymer surfactant designed to provide effective solubilization, emulsification, and stabilization—particularly in aqueous systems where temperature-responsive behavior or low-foaming performance is required.
Q2: How does Pluronic RPE 2525 differ from other Pluronic grades such as L-series or F-series?
A: Unlike conventional PEO-PPO-PEO Pluronics, RPE 2525 features a unique reverse structure (PPO-PEO-PPO) with ethoxylated end blocks, resulting in enhanced hydrophobic character, improved surface activity at lower concentrations, and distinct cloud point behavior—making it especially suitable for high-solids or low-water-content applications.
Q3: Is Pluronic RPE 2525 compatible with ionic surfactants and electrolytes?
A: Yes, its nonionic nature provides good tolerance to salts and coexistence with anionic or cationic surfactants, though formulation stability should be verified experimentally due to potential micellar interactions or phase separation under specific ionic strength or pH conditions.
Q4: What are typical handling and storage recommendations?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, protected from direct sunlight and moisture. Avoid freezing, as prolonged exposure to sub-zero temperatures may affect viscosity and reconstitution behavior. Allow material to equilibrate to ambient temperature before use.
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