Polyethylenimine, Molecular Weight: 1,200, Density: 1.029-1.038, Viscosity: 3500-7500 cps, Soluble In: Water, lower alcohols, glycols and THF, Handling: Glove, chemical goggles & fume hood, Storage: Store at room temperature. Branched Polyethylenimine, Mw 1,200 (bPEI 1200) is highly branched liquid water soluble polyamine with high cationic charge density. Industrially, branched polyethylenimine (bPEI) have extensive applications as an auxiliary agent intensifying manufacturing processes and improving quality of the final products. They are widely used in: paper-making, water treatment, detergents, adhesives, and cosmetics. In research, they are extensively investigated as non-viral vector carriers. Resin Content (wt%): 99%.