An organic compound with two phenyl groups attached to a thiourea core (containing carbon, nitrogen, and sulfur), used as a rubber accelerator and analytical reagent.
From di- (two) + phenyl (aromatic rings) + thiourea (urea with sulfur replacing oxygen, from Greek 'theion' meaning sulfur). Developed in the early 1900s as part of rubber chemistry research.
Diphenylthiourea is still used today to detect heavy metals like copper and lead in water—it binds to these metals so tightly that chemists can spot contamination that would be invisible to our eyes.
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