Electro Plating, High-Purity Solvents

Polyethyleneimine Solution

Polyethyleneimine (PEI) solution, identified by CAS number 25987-06-08, represents a highly versatile cationic polymer characterized by a repeating unit of amine groups and two-carbon aliphatic CH2CH2 spacers. This specific aqueous solution formulation provides a stable medium for the polymer, which exists in branched or linear architectures depending on the synthesis method employed. Known for its exceptionally high charge density, polyethyleneimine acts as a powerful polyelectrolyte, facilitating strong electrostatic interactions with negatively charged surfaces and molecules. In industrial chemistry, it serves as a critical processing aid, while in biological research, it is renowned for its role in non-viral gene delivery due to the proton sponge effect. The solution form ensures ease of handling, precise dosing, and rapid dispersion in various solvents. Its unique chemical structure allows for extensive functionalization, making it an indispensable tool in material science, wastewater treatment, and biotechnology sectors globally, providing robust performance across diverse industrial pH conditions.

Attributes

Key Features and Benefits

High Cationic Charge Density: Provides exceptional binding affinity to anionic substrates and surfaces.
Excellent Water Solubility: Formulated for immediate integration into aqueous processing systems without extensive mixing.
Superior Flocculation Properties: Enhances solid-liquid separation efficiency in industrial filtration and clarification processes.
Proton Sponge Effect: Facilitates efficient endosomal escape in complex cellular delivery applications.
Versatile Reactivity: The primary, secondary, and tertiary amine groups allow for diverse chemical modifications.
Adhesion Promotion: Significantly improves the bonding strength between dissimilar materials and coatings.
Broad pH Stability: Maintains effective performance and structural integrity across various acidic and basic industrial environments where high stability is often demanded.

Specifications

Technical Highlights

Molecular Weight Range: Available in various weight averages to suit specific viscosity and penetration requirements.
Polydispersity Index: Controlled manufacturing processes ensure consistent polymer chain distribution for predictable performance.
Amine Ratio: Features a balanced distribution of primary, secondary, and tertiary amines for optimal reactivity.
Viscosity Profile: Newtonian flow characteristics in dilute solutions facilitate easy pumping and precise metering.
Thermal Stability: Exhibits high resistance to thermal degradation during industrial processing and storage.
Surface Tension Reduction: Acts as a mild surfactant to improve wetting on hydrophobic surfaces.
Chelation Capability: Forms stable complexes with various multivalent metal ions found in industrial waste stream runoff.

Download Technical Data Sheet (TDS)

Practical industry uses

Applications

Gene Transfection: Utilized as a standard reagent for delivering DNA and RNA into eukaryotic cells.
Paper Manufacturing: Acts as a retention aid and wet-strength additive to improve pulp quality.
Wastewater Treatment: Serves as a primary coagulant and flocculant for removing organic matter and heavy metals.
CO2 Capture: Employed in the development of solid adsorbents for carbon sequestration technologies.
Textile Processing: Used as a dye-fixing agent to improve color fastness on various fabric types.
Adhesive Formulations: Enhances the structural bond of primers used in multilayer film packaging.
Enzyme Immobilization: Provides a robust cationic scaffold for biological catalysts used in large bioreactors.