Catalog Number
ACM9002986-16
Product Name
Polyethyleneimine (ca. 30% in Water)
Description
Ethyleneimine, stabilized appears as a clear colorless liquid with an ammonia-like odor. Flash point 12°F. Less dense than water. Flammable over a wide range of vapor-air concentrations. Vapors irritate the skin, eyes, nose, and throat. May be toxic by prolonged inhalation, skin absorption, or ingestion. Carcinogenic. Vapors heavier than air. May polymerize exothermically if heated or contaminated. If the polymerization takes place inside a container, the container may rupture violently.;COLOURLESS LIQUID WITH PUNGENT ODOUR.;Colorless liquid with an ammonia-like odor.;Colorless liquid with an ammonia-like odor. [Note: Usually contains inhibitors to prevent polymerization.]
Molecular Weight
43.07g/mol
Molecular Formula
C2H5N;CH2NHCH2;C2H5N
InChI
InChI=1S/C2H5N/c1-2-3-1/h3H,1-2H2
InChI Key
NOWKCMXCCJGMRR-UHFFFAOYSA-N
Boiling Point
131 to 133 °F at 760 mm Hg (EPA, 1998);56.0 °C;55-56 °C at 760 mm Hg;56-57 °C;133°F;133°F
Melting Point
-98 °F Freezing Point (EPA, 1998);-77.9 °C;Freezing point: -71.5 °C;-74 °C;-97°F;-97°F
Flash Point
12 °F (EPA, 1998);12 °F (-11 °C) (Closed cup);-11 °C c.c.;12°F;12°F
Density
0.8321 at 68 °F (EPA, 1998);0.8321 at 24 °C/4 °C;Relative density (water = 1): 0.8;0.83;0.83
Solubility
Miscible (NIOSH, 2016);23.22 M;SOL IN ALKALI;Soluble in ethanol; slightly soluble in ether; very soluble in chloroform; miscible in organic solvents;In water, 1X10+6 mg/L (miscible);Solubility in water: miscible;Miscible
Application
Polyethyleneimine (ca. 30% in Water) is a versatile, branched polymer characterized by its polycationic nature, which includes primary, secondary, and tertiary amines. This structural diversity makes it highly effective for a wide range of industrial and scientific applications. In industrial settings, its high molecular weight versions are particularly useful as flocculating agents, coatings for textiles, adhesion promoters, and carriers for enzymes. Additionally, polyethyleneimine plays a significant role in CO2 capture. In the realm of biotechnology and medicine, PEI's ability to form nanoscale complexes through interactions with negatively charged nucleic acids makes it a powerful non-viral carrier for in vivo delivery of therapeutic nucleic acids, providing protection and stability until cellular uptake occurs. This property is leveraged in gene transfection, where it demonstrates efficacy and low toxicity, such as in human serum albumin-coupled applications. Moreover, PEI enhances the solubility and biocompatibility of single-walled nanotubes (SWNTs) while preserving their structural integrity, making it suitable for CO2 uptake and gene delivery. Its capacity to modify surface properties is also evident in environmental applications, such as groundwater defluoridation, where PEI-modified zirconia/PAN nanofibers showcase high fluoride adsorption across diverse pH levels.
Color/Form
Oily, water-white liquid;Colorless liquid ... [Note: Usually contains inhibitors to prevent polymerization].
Covalently-Bonded Unit Count
1
EC Number
205-793-9;618-346-1
Heat of Vaporization
333 Btu/lb= 185 cal/g= 7.75 x 10+5 J/kg
Log P
log Kow = -0.28 (est);-0.36
MeSH Entry Terms
aziridine;aziridine, conjugate acid;ethyleneimine;ethylenimine
Monoisotopic Mass
43.042199g/mol
NSC Number
196335;134422;124036;124035;124034
Odor
Pungent, ammonia-like odor;Amine odor
Other Experimental
1 mg/cu m = 0.56 ppm; 1 ppm = 1.79 mg/cu m;Saturation concentration = 567 g/cu m at 30 °C.;Heat of solution: -26 Btu/lb= -14 cal/g= -0.6x10+5 J/kg (est);Heat of polymerization: (est) -900 Btu/lb= -500 cal/g= -20x10+5 J/kg;... tend/s/ to polymerize with explosive violence in the presence of acids and acid-forming and oxidizing materials;Henry's Law constant = 1.21X10-5 atm-cu m/mol at 25 °C (est);Hydroxyl radical reaction rate constant = 6.10X10-12 cu-cm/molec-sec at 25 °C
Refractive Index
Index of refraction = 1.412 at 25 C/D
UN Number
1185;1185;1185;1185;1185
Vapor Density
1.48 (EPA, 1998) (Relative to Air);1.48 (Air=1);Relative vapor density (air = 1): 1.5;1.48
Vapor Pressure
160 mm Hg at 68 °F (EPA, 1998);213.01 mmHg;213 mm Hg at 25 °C;Vapor pressure, kPa at 20 °C: 21.3;160 mmHg;160 mmHg
