as intermediate of dyes, perfumes, food pigments, medicines, pesticides and building materials
*The following content is generated by AI and is for reference only.
<h3>Overview</h3>
<p><strong>4-Aminobenzenesulfonic acid</strong> (CAS 121-57-3) is a key aromatic amine intermediate produced via sulfonation of aniline. Its molecular formula is C6H7NO3S, serving as a fundamental building block for dye and pharmaceutical synthesis.</p>
<h3>Application</h3>
<ul>
<li>Dye industry: Precursor for azo dyes and pigments.</li>
<li>Pharmaceuticals: Synthesis of sulfa drugs and antibiotics.</li>
<li>Chemical manufacturing: Production of antioxidants and stabilizers.</li>
</ul>
<h3>Precautions</h3>
<p>Store in cool, dry, ventilated areas away from oxidants. Use PPE to prevent skin contact and inhalation; avoid ingestion due to potential toxicity.</p>