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Reference.org
Ethylenediamine
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<p>Ethylenediamine (abbreviated as en when a <a href="/facts/Ligand/6etB3qeW">ligand</a>) is the <a href="/facts/Organic_compound/gqCNaN45">organic compound</a> with the <a href="/facts/Chemical_formula/hghUtthl">formula</a> C2H4(NH2)2. This colorless liquid with an <a href="/facts/Ammonia/MtLtJFtz">ammonia</a>-like odor is a <a href="/facts/Base_(chemistry)/M9wA7qeM">basic</a> <a href="/facts/Amine/JvfYJfP6">amine</a>. It is a widely used building block in chemical synthesis, with approximately 500,000 <a href="/facts/Tonnes/gMymLmWv">tonnes</a> produced in 1998. Ethylenediamine is the first member of the so-called <a href="/facts/Polyamine/VntSgncL">polyethylene amines</a>. </p>