Linear polyethylenimine (L-PEI 2500) is a high-charge cationic polymer that readily binds highly anionic substrates. Industrially, linear PEI can improve the appearance of negatively charged dyes by modulating their properties and improving their adherence to surfaces.
L-PEI 2500 contains 7-11% of the acylated amine (N-propionylated) from isomerization-polymerization of 2-ethyl-2-oxazoline followed by acid-hydrolysis of resulting N-propionyl-PEI. For fully deacylated L-PEI, see Polyethylenimine HCl, Linear, Mw 4,000 (L-PEI HCl 4000; Catalog # 24885)
- 9002-98-6, 26913-06-4
- Molecular Weight:
- Melting Point:
- Soluble In:
- hot water, cold water at low pH, methanol, and ethanol
Insoluble In: Benzene, ethyl ether, acetone, and cold water.
- Tan to brown solid
Siegman S, Truong NF, Segura T. (2015). Encapsulation of PEGylated low-molecular-weight PEI polyplexes in hyaluronic acid hydrogels reduces aggregation. Acta Biomater. in Press, doi:10.1016/j.actbio.2015.09.020
Liu X, Heiler DJ. (2010). Contact Lens Care Solutions with a Low Molecular Weight Oligomer." U.S. Patent 20,100,086,514, issued April 8, 2010.
- Gloves & chemical goggles
- Store at room temperature