*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>Hydroxyethyl Cellulose (HEC)</strong> is a non-ionic, water-soluble polymer derived from natural cellulose via etherification. Its molecular formula is (C6H7O2(OH)2OCH2CH2OH)n with CAS No. 9004-62-0.</p>
<h3>Application</h3>
<ul>
<li><strong>Petrochemical:</strong> Drilling mud viscosifier for cuttings suspension.</li>
<li><strong>Cosmetics:</strong> Thickening agent in lotions and shampoos.</li>
<li><strong>Pharmaceuticals:</strong> Controlled-release matrix for oral tablets.</li>
<li><strong>Construction:</strong> Additive in cement mortars for workability.</li>
</ul>
<h3>Precautions</h3>
<p>Avoid inhalation of dust; wear PPE during handling. Store in cool, dry conditions to prevent microbial growth or hydrolysis. Not recommended for intravenous use due to viscosity risks.</p>