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Ethylene imine polymer
Synonyms: PEI or Poly(ethylene imine) or Poly(ethyleneimine) solution or Ethyleneimine polymer solution
H2NCH2(C22H55N11)nCH2NH2
Mr 600,000 to 1,000,000
CAS [9002-98-6]
EC Number 205-793-9
MDL Number MFCD00084427
PubChem Substance ID 24845612
Sterile filtered solution
Density 1.08 g/mL at 20°C
Refractive Index N20/D: 1.440 - 1.455
Structural Viscosity: 18 - 40PAS
Appearance (Color): Faint yellow to yellow in color; clear to slightly opaque viscous liquid
Ethylene imine polymer is utilized in Crystal Screen 2 crystallization screen
Measured Refractive Index Range: 1.45032 - 1.45291 at 20°C
Measured Conductivity Range: 237.5 - 320.0 µS/cm at 25°C
1. Acta Cryst. (2004). D60, 952-953, Crystallization of the mosquito-larvicidal binary toxin produced by Bacillus sphaericus A. W. Smith, A. Camara-Artigas and J. P. Allen.
2. Acta Cryst. (2010). D66, 685-697, A crystallization screen based on alternative polymeric precipitants, C. Grimm, A. Chari, K. Reuter and U. Fischer.