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<h3>Overview</h3>
<p>Hypromellose (HPMC) is a semi-synthetic, inert, hydrophilic polymer derived from cellulose via etherification. It functions as a binder, thickener, and film former in pharmaceutical and industrial sectors.</p>
<ul>
<li><strong>CAS No:</strong> 9004-65-3</li>
<li><strong>Formula:</strong> [C₆H₇O₂(OH)₃₋ₓ(OR)ₓ]ₙ where R = CH₂CH₂OH or CH₂CH(OH)CH₂OH</li>
</ul>
<h3>Application</h3>
<ul>
<li><strong>Pharmaceuticals:</strong> Controlled-release tablet matrices and topical eye drops.</li>
<li><strong>Construction:</strong> Cement additives for improved water retention and workability.</li>
<li><strong>Food Industry:</strong> Stabilizer in sauces and emulsions.</li>
</ul>
<h3>Precautions</h3>
<p>Avoid inhalation of dust; wear respiratory protection. Store in cool, dry conditions below 30°C to prevent clumping. Not approved for injectable formulations due to viscosity constraints.</p>