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Reference.org
Iminodiacetic acid
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<p>Iminodiacetic acid is the <a href="/facts/Organic_compound/gqCNaN45">organic compound</a> with the formula HN(CH2CO2H)2, often abbreviated to IDA. A white solid, the compound is a <a href="/facts/Dicarboxylic_acid/d69GkIAc">dicarboxylic acid</a> <a href="/facts/Amine/JvfYJfP6">amine</a> (the nitrogen atom forms a secondary amino group, not an <a href="/facts/Imino/yK72z07j">imino</a> group as the name suggests). IDA is a popular <a href="/facts/Chelating_ligand/4G79sXBB">chelating ligand</a>, first introduced in the early 1950s by Schwarzenbach. </p>