Polymers & Resins
REACH
Polyethylenimine
CAS Number
9002-98-6
EC Number
618-346-1
Abbreviation
PEI
What is Polyethylenimine?
Polyethylenimine (CAS 9002-98-6), commonly abbreviated as PEI, is a high-density amine polymer in branched and linear forms. Also known as Montrek 1000.
Where is Polyethylenimine used?
- Water treatment: coagulant and flocculant that binds suspended solids, heavy metals and anionic contaminants
- Textile and paper: wet-strength agent and fiber retention aid
- Coatings and adhesives: primer layer or crosslinking agent for films, foils and packaging laminates
- Industrial cleaning: chelating capacity that sequesters metal ions
- It also acts as an adhesion promoter.
Commercial specifications
- Aqueous solutions at 30% to 50% concentration, and solid form
- Low-MW grades for surface treatments; high-MW grades for flocculation
- Specific grades for water treatment and coating requirements
Other Names (Synonyms)
Aziridine, homopolymer|Ethylenimine, polymers|Montrek 1000|Polymin FL|Tydex 12|PEI
What are the physical properties of Polyethylenimine?
Melting Point 50 °C (approx)
Boiling Point 250 °C(lit.)
Density 1.27 g/cm³
Flash Point >230 °F
Appearance Clear viscous liquid
Color Pale yellow
Form Liquid
Water Solubility Soluble in water.
Vapor Pressure 9 mmHg ( 20 °C)
Refractive Index n 20/D 1.5290
pH pH(50g/l, 25℃) : 10～12
Log P -0.969 (est)
Which trade and regulatory codes apply to Polyethylenimine?
HS Code 39019090
UN Number 3082
ADR Class 9
Packing Group III
Storage Class 10 - Combustible liquids
WGK (Germany) 2