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Triflic acid
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<p>Triflic acid, the short name for trifluoromethanesulfonic acid, TFMS, TFSA, HOTf or TfOH, is a <a href="/facts/Sulfonic_acid/6JHPGnNY">sulfonic acid</a> with the chemical formula CF3SO3H. It is one of the strongest known <a href="/facts/Acid_(chemistry)/FySU18n1">acids</a>. Triflic acid is mainly used in research as a <a href="/facts/Catalyst/LPBS7TQC">catalyst</a> for <a href="/facts/Esterification/FoUAIIw4">esterification</a>. It is a <a href="/facts/Hygroscopic/1NBGewXv">hygroscopic</a>, colorless, slightly viscous liquid and is soluble in <a href="/facts/Solvent/LoMPMz8S">polar solvents</a>. </p>