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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,
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



1 kg in poly bottle

250 g 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.

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}

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

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.

Legal Information

Pluronic is a registered trademark of BASF

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Same Products - New Packaging
Protocols & Articles


Polyethylene Glycol (PEG) Selection Guide

Polyethylene glycol (PEG), also sometimes referred to as polyethylene oxide (PEO), is a condensation polymer of ethylene oxide and water that has several chemical properties that make it useful for b...
Keywords: Antimicrobials, Bacterial conjugations, Cell culture, Chemical reactions, Chromatography, Click chemistry, Condensations, Degradations, Detergents, Gas chromatography, Immobilization, Molecular biology, PEGylations, Peptide synthesis, Pharmaceutical, Polymerization reactions, Precipitation

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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