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542342 Sigma-Aldrich

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

average Mn ~14,600

Synonym: PEG-PPG-PEG, Pluronic® F-108



Related Categories Amphiphilic Block Copolymers, Block Copolymers, Materials Science, Micro/NanoElectronics, Nonionic,
Quality Level   100
vapor density   >1 (vs air)
vapor pressure   <0.3 mmHg ( 20 °C)
mol wt   average Mn ~14,600
composition   PEG, 82.5 wt. %
pH   6.0-7.4 (2.5% in H2O)
surface tension   41 dyn/cm, 25 °C, 0.1 wt. % in H2O
viscosity   2,800 cP(77 °C, Brookfield)(lit.)
transition temp   cloud point >100 °C (1 wt. % aqueous solution)
  Tm (DSC) 60 °C (at peak)
HLB   >24.0


General description

Pluronic® F108 is a tri block copolymer and a terminal primary dihydroxy-functional oligomer. It behaves as a nonionic surfactant. It is a surface active material whose properties are dependent on the hydrophilic (EO)/hydrophobic (PO) ratio. High EO content gives better o/w stabilizers.


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.

Pluronic® F108 was used as a surfactant in a medium to prevent the cells from sticking to the surface of a microfluidic device.{7}-{11}Pluronic may be potentially useful as a pathogen detector. It was used in the analysis of microbial community and genotyping single nucleotide polymorphisms (SNPs).{9} The triblock copolymer was used as a pore template for the fabrication of porous carbons and carbon/silica composite.{10}


1 kg in poly bottle

250 g in poly bottle

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.

Physical form

Terminal primary dihydroxy-functional oligomer.

Legal Information

Pluronic is a registered trademark of BASF

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles


Polyethylene Glycol (PEG) Selection Guide

Poly(ethylene glycol) (PEG) is a synthetic, hydrophilic, biocompatible polymer with widespread use in biomedical and other applications. PEGs are synthesized using a ring-opening polymerization of et...
Keywords: Adhesion, Bacterial conjugations, Click chemistry, Molecular biology, PEGylations, Polymerization reactions, Ring-opening polymerization

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, Catalysis, Condensations, Diffusion, Sol-gel

Peer-Reviewed Papers


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