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Poly(ethyleneimine) solution

average Mn ~1,200, average Mw ~1300 by LS, 50 wt. % in H2O

Ethyleneimine polymer solution, PEI
CAS Number:
PubChem Substance ID:

mol wt

average Mn ~1,200
average Mw ~1300 by LS

Quality Level


50 wt. % in H2O

refractive index

n20/D 1.454


200-500 cP(25 °C)(lit.)


1.08 g/mL at 25 °C



InChI key


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General description

Poly(ethyleneimine) (PEI) solution is an amine based chelating ligand that can be prepared by the polymerization of arizidine. It can be impregnated to form an anion exchange membrane for chromatography applications.


PEI can be used as a complexing agent in the fabrication of composite membranes, which can be used in filtration of metals from the aqueous solution.


100, 250 mL in poly bottle


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Hazard Statements

Hazard Classifications

Aquatic Chronic 2 - Skin Sens. 1

Storage Class Code

10 - Combustible liquids



Certificate of Analysis

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Certificate of Origin

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Poly (ethyleneimine) as complexing agent for separation of metal ions using membrane filtration
Bayer , et al.
Polymer Bull., 13(4), 307-311 (1985)
Sorption and filtration of Hg (II) ions from aqueous solutions with a membrane containing poly (ethyleneimine) as a complexing polymer
Bessbousse H, et al.
Journal of Membrane Science, 325(2), 997-1006 (2008)
Sorption and detoxification of chromium (VI) by aerobic granules functionalized with polyethylenimine
Sun X, et al.
Water Research, 44(8), 2517-2524 (2010)
Micro-nano structure poly (ether sulfones)/poly (ethyleneimine) nanofibrous affinity membranes for adsorption of anionic dyes and heavy metal ions in aqueous solution
Min M, et al.
Chemical Engineering Journal, 197(4), 88-100 (2012)
Ion-exchange chromatography of nucleotides on poly-(ethyleneimine)-cellulose thin layers
Randerath K and Randerath E
Journal of Chromatography A, 16(2), 111-125 (1964)


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