Description

Polyethyleneimine CAS NO 25987-06-8 is a highly branched cationic polymer with a high density of amine groups, making it a versatile and powerful functional agent. This unique structure provides exceptional binding, flocculating, and surface modification properties critical for numerous industrial processes. It is an essential material for manufacturers in the water treatment, paper production, cosmetics, and biotechnology sectors seeking to enhance product performance and process efficiency.

Application

• Flocculant & Coagulant Aid: Primary application in water and wastewater treatment for removing suspended solids, organic matter, and heavy metals.
• Paper Retention & Drainage Aid: Improves fiber and filler retention in papermaking, enhancing sheet formation and production speed.
• Adhesion Promoter & Surface Modifier: Used in coatings, inks, and adhesives to improve adhesion to difficult substrates like plastics and metals.
• Biotechnology & Gene Delivery: Acts as a transfection agent for delivering DNA and other nucleic acids into cells in research and therapeutic development.
• Cosmetic & Personal Care Ingredient: Functions as a conditioning agent and viscosity modifier in shampoos, creams, and other formulations.
• Catalyst Support & Immobilization: Serves as a scaffold for immobilizing enzymes, metal catalysts, and other active agents.
• Dye Fixative & Textile Auxiliary: Improves dye fastness and color yield in textile dyeing and printing processes.

Basic Information

Product Name	Polyethyleneimine
CAS No.	25987-06-8
Molecular Formula	(C2H5N)n
Molecular Weight	Variable (typically 600 - 1,000,000 g/mol)
Synonyms	PEI; Polyaziridine; Poly(iminoethylene); Polyethylenimine; Polymine; Aziridine, homopolymer; Ethylenimine polymer; Lupasol (trade name); Polymin (trade name); Epomin (trade name)
EINECS	247-411-9

Quality Control

Our Polyethyleneimine is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure consistency in molecular weight distribution, amine content, viscosity, and purity. Certificates of Analysis (COA) detailing these specifications are provided with every shipment to guarantee compliance with your application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); ensure containers are sealed tightly after use to prevent absorption of atmospheric moisture and potential degradation.

Specification

Item	Specification
Appearance	Viscous liquid or solid (grade dependent)
Form	50% Aqueous Solution / Branched / Linear
Assay (Total Nitrogen)	Contact for details
Molecular Weight (Average)	e.g., 600, 1800, 10k, 70k, 750k (Various grades)
pH (50% solution)	10 - 12
Viscosity	Grade dependent
Identification (IR)	Conforms
Residual Solvent	Meets internal specifications

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.