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435465 Aldrich

Poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol)

average Mn ~5,800

Synonym: PEG-PPG-PEG, Pluronic® P-123



Related Categories Amphiphilic Block Copolymers, Biomaterials, Block Copolymers, Materials Science, Micro/NanoElectronics,
vapor density   >1 (vs air)
vapor pressure   <0.3 mmHg ( 20 °C)
feed ratio   20:70:20 (EO:PO:EO)
mol wt   average Mn ~5,800
composition   PEG, 30 wt. %
refractive index   n20/D 1.465
surface tension   34 dyn/cm, 25 °C, 0.1 wt. % in H2O
viscosity   350 cP(60 °C, Brookfield)(lit.)
transition temp   Tm (DSC) 39 °C (at peak)
  cloud point 90 °C (1 wt. % aqueous solution)
density   1.018 g/mL at 25 °C
HLB   7 - 9


Frequently Asked Questions

Frequently Asked Questions are available for this Product.


1 L in poly bottle

250 mL in poly bottle

Physical form

Terminal primary dihydroxy-functional oligomer.


Hard and soft surface cleaners, defoamers in coatings and water treatment. Lubricant in metal working, anti-foaming aid and extender for linear and cross-linked polyesters and polyurethanes.

PEG-PPG-PEG is used in the preparation and coating of Fe-W-C(O) nanoparticles by sol gel technique. Also, employed as sacrificial templates to prepare ZnS nanospheres, nanoporous silica.

Features and Benefits

Surface active material whose properties are dependent on the hydrophilic (EO)/hydrophobic (PO) ratio. High EO content gives better o/w stabilizers.

General description

PEG-PPG-PEG (Pluronic P123) symmetric triblock copolymer constitutes of poly(ethylene oxide)(PEO) and poly (propylene oxide) (PPO). The unique characteristic of PPO block exhibiting hydrophobicity at temperatures above 288K and solubility in water at temperatures below 288K lead to formation of micelle consisting of PEO-PPO-PEO triblock copolymers. Some studies report that the hydrophobic core contains PPO block and a hydrophilic corona is comprised of PEO block. In 30wt% aqueous solution Pluronic P123® forms a cubic gel phase.

Legal Information

Pluronic is a registered trademark of BASF

Price and Availability

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Protocols & Articles


Mesoporous Titanium Dioxide Thin Films

Titanium dioxide (TiO2) is an important n-type semiconducting material that shows interesting characteristics such as photoswitchable surface wettability, high photocatalytic activity, bistable elect...
Jinshu Wang, Junshu Wu, Hongyi Li
Material Matters, Volume 7, Number 2, 2–6
Keywords: Adsorption, Building blocks, Catalysis, Ceramics, Condensations, Cosmetics, Degradations, Diffraction, Eliminations, Evaporation, Materials Science, Oxidations, Polymerization reactions, Semiconductor, Separation, Sol-gel

Synthesis of Mesoporous Materials

Mespoporous materials, also known as mesoporous molecular sieves, are a class of 3D-nanostructures with well-defined mesoscale (2–50 nm diameter) pores and surface areas up to 1000 m2/g.1 In terms of...
Material Matters 2008, 3.1, 17.
Keywords: Absorption, Applications, Catalog, Catalysis, Condensations, Diffusion, Material Matters, Methods, Sol-gel

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