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408700

Sigma-Aldrich

Poly(ethyleneimine) solution

average Mn ~1,800 by GPC, average Mw ~2,000 by LS, 50 wt. % in H2O

Synonym(s):
Ethyleneimine polymer solution, PEI
CAS Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.23

form

liquid

Quality Level

mol wt

average Mn ~1,800 by GPC
average Mw ~2,000 by LS

concentration

50 wt. % in H2O

refractive index

n20/D 1.453

density

1.08 g/mL at 25 °C

InChI

1S/C2H8N2.C2H5N/c3-1-2-4;1-2-3-1/h1-4H2;3H,1-2H2

InChI key

SFLOAOINZSFFAE-UHFFFAOYSA-N

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This Item
48259518197803880
form

liquid

form

-

form

-

form

liquid

refractive index

n20/D 1.453

refractive index

n20/D 1.454

refractive index

-

refractive index

-

density

1.08 g/mL at 25 °C

density

1.08 g/mL at 25 °C

density

-

density

-

mol wt

average Mn ~1,800 by GPC

mol wt

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

mol wt

average Mn ~60,000 by GPC, average Mw ~750,000 by LS

mol wt

Mr 600,000-1,000,000

concentration

50 wt. % in H2O

concentration

50 wt. % in H2O

concentration

50 wt. % in H2O

concentration

~50% in H2O

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

General description

Poly(ethyleneimine) (PEI) is a positivelycharged polymeric amine with a linear or branched structure. It has chelating properties with a variety of metal ions. It is highlysoluble in water and behaves as an effective base in aqueous solutions. Due toits superior physicochemical properties, it is widely used in the field ofbiomedicine, water purification, bioimaging, gene delivery, and self-healingmaterials.

Application

Poly(ethyleneimine) solution can be used for surface modification of cation exchange resins. The modified resins exhibited improved selectivity towards transition elements. Due to repulsion effects within the cationic layer, the selectivity for alkaline ions decreases. As a result, this resin can be applied to purify industrial waste by column sorption.

It can be used as a precursor to prepare polyelectrolyte multilayers for the promotion of cell adhesion and growth on implant surfaces.

PEI can act as a reactive template and stabilizing agent in the preparation of metal nanoparticles in aqueous media. The amino groups in the PEI can coordinate with metal ions dissolved in water and reduce their aggregation capability. This results in the formation of smaller nanoparticles.

Features and Benefits

  • It has repetitive structural units and aflexible polymer chain.
  • Due to the accessibility of a huge number ofamino groups on PEI, it can be modified or functionalized for specific featuressuch as sensitivity, specificity, and biocompatibility.
  • Highwater solubility.

Physical form

Branched polymer

Pictograms

Exclamation markEnvironment

Signal Word

Warning

Hazard Statements

Hazard Classifications

Aquatic Chronic 2 - Skin Sens. 1

Storage Class Code

10 - Combustible liquids

WGK

WGK 2


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