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Polyethyleneimine (PEI) is a highly branched polymer known for its strong cationic charge and ability to interact with negatively charged surfaces, molecules, and particles.
Polyethyleneimine (PEI) is widely used in applications ranging from water treatment and adhesives to biotechnology and coatings due to its high reactivity and strong adhesive properties.
Polyethyleneimine (PEI) can vary in molecular weight, making it versatile for numerous industrial, environmental, and medical applications.
CAS Number: 9002-98-6
EC Number: 618-498-9
Molecular Formula: (C2H5N)n
Molecular Weight: Variable depending on polymer length
Synonyms: PEI, Polyethylenimine, Branched Polyethyleneimine, Poly(ethylenimine), Polyamine, Polyiminoethylene
APPLICATIONS
Polyethyleneimine (PEI) is widely used as a flocculant in water and wastewater treatment, where it helps to aggregate suspended particles, making it easier to remove impurities through filtration or sedimentation.
Polyethyleneimine (PEI) is employed in adhesives, where its high cationic charge improves bonding strength between different materials, including glass, metal, plastic, and wood, providing strong adhesion in industrial applications.
Polyethyleneimine (PEI) is used in coatings for paper and textiles, where it enhances the adhesion of dyes, inks, and coatings, improving product quality and durability.
Polyethyleneimine (PEI) is essential in gene therapy and biotechnology, where it is used as a transfection agent, forming complexes with DNA or RNA, allowing for the delivery of genetic material into cells for research and medical applications.
Polyethyleneimine (PEI) is utilized in resin formulations, improving cross-linking and increasing the strength, durability, and chemical resistance of coatings and sealants used in construction and industrial settings.
Polyethyleneimine (PEI) is applied in the paper and pulp industry, where it acts as a retention aid, improving the retention of fine particles and fillers, resulting in stronger, higher-quality paper products.
Polyethyleneimine (PEI) is employed in metal treatment processes, where it enhances the adhesion of metal coatings, ensuring uniform deposition and improved corrosion resistance.
Polyethyleneimine (PEI) is widely used in the production of membranes for gas separation and water filtration, where its cationic properties improve selectivity and efficiency in separation processes.
Polyethyleneimine (PEI) is applied in the development of antimicrobial coatings for medical devices and surfaces, where its strong cationic charge disrupts microbial cell membranes, providing long-lasting protection against bacteria and viruses.
Polyethyleneimine (PEI) is used in packaging films, where it improves barrier properties, preventing moisture, gas, and contaminants from penetrating the packaging and preserving the quality of food and other perishable goods.
Polyethyleneimine (PEI) is incorporated into fuel cell and battery technologies, where it is used as a binder for electrodes, enhancing the stability and performance of energy storage systems.
Polyethyleneimine (PEI) is found in hair care products, where it enhances the adhesion of conditioning agents to hair, leaving it softer, smoother, and more manageable.
Polyethyleneimine (PEI) is used in wastewater treatment for the removal of heavy metals, where its ability to bind to metal ions helps to purify water and reduce environmental contamination.
Polyethyleneimine (PEI) is employed in food and beverage processing, where it acts as a clarifying agent, aiding in the removal of suspended particles and improving the clarity and quality of the final product.
Polyethyleneimine (PEI) is used in personal care products such as shampoos and conditioners, where its cationic properties help to smooth hair cuticles, improving the feel and appearance of hair.
Polyethyleneimine (PEI) is found in pharmaceutical formulations, where it is used as an excipient to enhance drug delivery by improving the stability and bioavailability of active ingredients.
Polyethyleneimine (PEI) is utilized in the production of specialty chemicals for agriculture, where it improves the adhesion and delivery of fertilizers, herbicides, and pesticides to crops, enhancing their effectiveness.
Polyethyleneimine (PEI) is applied in the manufacturing of specialty coatings for automotive and aerospace industries, where it improves adhesion, corrosion resistance, and durability under harsh conditions.
DESCRIPTION
Polyethyleneimine (PEI) is a highly branched polymer with a strong cationic charge, widely used in applications requiring adhesion, flocculation, and interaction with negatively charged surfaces.
Polyethyleneimine (PEI) is highly effective in water treatment processes, where it acts as a flocculant, binding to suspended particles and facilitating their removal from water through filtration or sedimentation.
In biotechnology, Polyethyleneimine (PEI) is commonly used for gene delivery, where its cationic charge allows it to form complexes with DNA or RNA, facilitating the transfer of genetic material into cells.
Polyethyleneimine (PEI) is valued for its versatility in adhesives and coatings, where it enhances bonding strength and improves the adhesion of coatings to a variety of surfaces.
Due to its strong cationic charge, Polyethyleneimine (PEI) is often used in packaging and barrier materials, improving the protection and preservation of packaged goods.
Polyethyleneimine (PEI) is highly compatible with a wide range of industrial processes and can be tailored to specific molecular weights to meet the needs of different applications, including paper manufacturing, metal finishing, and pharmaceuticals.
PROPERTIES
Chemical Formula: (C2H5N)n
Molecular Weight: Variable depending on polymer length
Common Name: Polyethyleneimine (PEI)
Appearance: Clear to light yellow viscous liquid or powder
Density: 1.03-1.05 g/cm³
Boiling Point: N/A
Melting Point: N/A
Solubility: Soluble in water, alcohols, and certain organic solvents
Flash Point: N/A
Reactivity: Reacts with acids and anionic compounds
Chemical Stability: Stable under recommended storage conditions
Storage Temperature: Store in a cool, dry place away from strong acids and oxidizing agents
Vapor Pressure: Low
FIRST AID
Inhalation:
If Polyethyleneimine (PEI) is inhaled, move the affected person to fresh air immediately.
If breathing difficulties persist, seek immediate medical attention.
If the person is not breathing, administer artificial respiration.
Keep the affected person warm and at rest.
Skin Contact:
Wash the affected area with soap and water.
If skin irritation or rash develops, seek medical attention.
Eye Contact:
In case of eye contact, flush the eyes with plenty of water for at least 15 minutes, lifting upper and lower eyelids.
Seek immediate medical attention if irritation or redness persists.
Remove contact lenses if present and easy to do; continue rinsing.
Ingestion:
If Polyethyleneimine (PEI) is ingested, do not induce vomiting unless directed to do so by medical personnel.
Rinse the mouth thoroughly with water.
Seek immediate medical attention.
If the person is conscious, give small sips of water to drink.
Note to Physicians:
Treat symptomatically.
No specific antidote.
Provide supportive care.
HANDLING AND STORAGE
Handling:
Personal Protection:
Wear appropriate personal protective equipment (PPE) such as gloves and safety goggles when handling large quantities of Polyethyleneimine (PEI).
Use in a well-ventilated area to avoid inhalation of vapors or dust.
Ventilation:
Ensure adequate ventilation when handling large amounts of Polyethyleneimine (PEI) to control airborne concentrations below occupational exposure limits.
Avoidance:
Avoid direct contact with eyes and prolonged skin contact.
Do not eat, drink, or smoke while handling Polyethyleneimine (PEI).
Wash hands thoroughly after handling.
Spill and Leak Procedures:
Contain spills to prevent further release and minimize exposure.
Absorb with inert material (e.g., sand, vermiculite) and collect for disposal.
Dispose of in accordance with local regulations.
Storage:
Store Polyethyleneimine (PEI) in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and oxidizers.
Keep containers tightly closed when not in use to prevent contamination.
Store away from heat sources, direct sunlight, and moisture.
Handling Cautions:
Avoid inhalation of vapors and direct contact with skin and eyes.
Use explosion-proof equipment in areas where vapors may be present.
