Crystallization grade Ethylene imine polymer for formulating screens or for optimization. 

•  Sterile filtered solution
• Formulated in Type 1+ ultrapure water: 18.2 megaohm-cm resistivity at 25°C, < 5 ppb Total Organic Carbon, bacteria free (<1 Bacteria (CFU/ml)), pyrogen free (<0.03 Endotoxin (EU/ml)), RNase-free (< 0.01 ng/mL) and DNase-free (< 4 pg/µL)

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 (of starting maerial)
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 and StockOptions Polymer

HR2-599 Measured Refractive Index Range: 1.45032 - 1.45291 at 20°C
HR2-599 Measured Conductivity Range: 237.5 - 320.0 µS/cm at 25°C

CAT NO NAME DESCRIPTION
HR2-599 50% Ethylene imine polymer 200 mL
HR2-600 10% v/v Ethylene imine polymer pH 5.6 100 mL