Description

Polyethyleneimine CAS NO 26658-46-8 is a highly branched cationic polymer with a high density of amine groups, making it a versatile and powerful functional agent. Its unique structure provides exceptional binding, flocculating, and surface modification capabilities, which are critical for enhancing product performance and process efficiency. This polymer is essential for industries ranging from water treatment and paper manufacturing to biotechnology and personal care, where its multifunctional reactivity drives innovation and solves complex formulation challenges.

Application

• Flocculant and Retention Aid in papermaking and water treatment processes.
• Adhesion Promoter and Surface Modifier for coatings, inks, and composite materials.
• Complexing Agent and Dispersant in mineral processing and pigment formulations.
• Gene Transfection Reagent and cell culture substrate in biotechnology and pharmaceutical research.
• Cross-linking Agent for polymers and resins to improve mechanical and thermal properties.
• Chelating Agent in detergents and cleaning formulations for enhanced performance.
• Wet Strength Additive for paper and non-woven fabrics.
• Antistatic Agent and conditioning polymer in personal care products.

Basic Information

Product Name	Polyethyleneimine
CAS No.	26658-46-8
Molecular Formula	(C2H5N)n
Molecular Weight	Variable (typically 600 - 1,000,000 g/mol)
Synonyms	PEI; Polyaziridine; Poly(ethylenimine); Poly(iminoethylene); Aziridine, homopolymer; Ethylenimine polymer; Polymin; Lupasol (trade name); Epomin (trade name); Catiofast (trade name)
EINECS	247-815-9

Quality Control

Our Polyethyleneimine is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance reliability. Each lot is tested against comprehensive specifications, including assay, molecular weight distribution, viscosity, and pH. Certificates of Analysis (COA) are provided with every shipment, documenting compliance with relevant industry standards. We support customer audits and can provide material tailored to meet specific regulatory or application requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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. Keep away from strong acids and oxidizing agents.

Specification

Item	Specification
Appearance	Viscous liquid or solid
Color	Colorless to pale yellow
Assay (Nitrogen Content)	Contact for details
Molecular Weight (Average)	Contact for details
Viscosity	Contact for details
pH (aqueous solution)	Contact for details
Solids Content	Contact for details
Identification (IR)	Complies

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