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Reference.org
Aromatic sulfonation
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<p>In <a href="/facts/Organic_chemistry/djxhxaNg">organic chemistry</a>, aromatic sulfonation is an <a href="/facts/Organic_reaction/SESmeGWm">reaction</a> in which a <a href="/facts/Hydrogen/BoYHjl0J">hydrogen</a> atom on an <a href="/facts/Aromatic_hydrocarbon/3EXq8Tgf">arene</a> is replaced by a <a href="/facts/Sulfonic_acid/6JHPGnNY">sulfonic acid</a> (−SO2OH) <a href="/facts/Functional_group/GXkSPsjM">group</a>. Together with <a href="/facts/Nitration/VnszL09H">nitration</a> and <a href="/facts/Halogenation/vYrGVWcJ">chlorination</a>, aromatic sulfonation is a widely used <a href="/facts/Electrophilic_aromatic_substitution/trwuWp1L">electrophilic aromatic substitutions</a>. <a href="/facts/Aryl_group/M3z7QRXd">Aryl</a> sulfonic acids are used as <a href="/facts/Detergent/4FLKXR6p">detergents</a>, <a href="/facts/Dye/a1NSlcsG">dye</a>, and <a href="/facts/Drug/FFFUI9n4">drugs</a>. </p>