*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p>Polyethyleneimine (PEI) with a molecular weight of <strong>70,000 Da</strong> is a high-molecular-weight cationic polymer. It is synthesized via ring-opening polymerization of aziridine. CAS No: <strong>9002-98-6</strong>. The product supplied as a 30% w/v aqueous solution offers enhanced solubility and stability for industrial processing.</p>
<h3>Application</h3>
<ul>
<li><strong>Water Treatment:</strong> Flocculant for heavy metal removal and sludge dewatering.</li>
<li><strong>Biotechnology:</strong> Transfection reagent for gene delivery in mammalian cell culture.</li>
<li><strong>Coatings:</strong> Crosslinker and adhesion promoter in water-based paint formulations.</li>
<li><strong>Textiles:</strong> Cationic finishing agent for dye fixation and fabric softening.</li>
</ul>
<h3>Precautions</h3>
<p>Store in sealed containers below 25°C to prevent degradation. Avoid direct skin contact as it causes severe irritation. Not approved for human clinical injection; strictly limited to laboratory and industrial use.</p>