Description

Polyethyleneimine CAS NO 106899-94-9 is a highly branched, cationic polymer known for its exceptional ability to bind to various surfaces and molecules. This property makes it a critical functional additive and processing agent across multiple high-value industries. It is essential for manufacturers and researchers in sectors demanding precise surface modification, flocculation, or complexation. Its versatility stems from a high density of amine groups, which provide strong cationic charge and reactivity.

Application

• Paper Manufacturing: Used as a wet-strength resin and retention/drainage aid to improve paper quality and production efficiency.
• Water Treatment: Acts as a highly effective flocculant and coagulant aid for clarifying industrial wastewater and process water.
• Biotechnology & Diagnostics: Serves as a coating agent for cell culture surfaces and as a non-viral transfection reagent for gene delivery.
• Adhesives & Sealants: Functions as a curing agent and modifier to enhance the performance of epoxy and other polymer systems.
• Textile Processing: Employed as a dye-fixing agent and anti-static coating to improve fabric quality.
• Cosmetics & Personal Care: Used in hair care products as a conditioning agent and film-former.
• Printing Inks: Improves pigment dispersion and adhesion properties on various substrates.

Basic Information

Product Name	Polyethyleneimine
CAS No.	106899-94-9
Molecular Formula	(C2H5N)n
Molecular Weight	Variable (Typically 600-1,000,000 g/mol)
Synonyms	Poly(ethylenimine); PEI; Polyaziridine; Poly(iminoethylene); Ethyleneimine polymer; Polymin; Lupasol (Trade Name); Epomin (Trade Name); Catiofast (Trade Name)
EINECS	Contact for details

Quality Control

Our Polyethyleneimine is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistency in key parameters such as molecular weight distribution, branching degree, and solids content. A comprehensive Certificate of Analysis (COA) detailing purity, viscosity, pH, and other critical specifications is provided with every shipment to guarantee it meets 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 immediately after use to prevent absorption of atmospheric moisture and CO2.

Specification

Item	Specification
Appearance	Viscous liquid or solid
Form	Branched
Assay (Solid Content)	30% - 50% (aqueous solution) or >99% (solid)
pH (1% solution)	8 - 11
Viscosity	Grade dependent
Primary Amine Content	~25%
Secondary Amine Content	~50%
Tertiary Amine Content	~25%

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