A chemical compound containing two cacodyl groups (toxic organic arsenic units), studied in early organic chemistry.
From di- (two) + cacodyl (from Greek kakodes, smelling bad, originally used for foul-smelling arsenic compounds). This rare compound reflects 19th-century chemists' interest in arsenic organics.
Dicacodyl represents a dark chapter in chemistry history—researchers were obsessed with arsenic compounds partly for medicine, partly for weapons, pushing the boundaries of what was safe to study.
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