Ninhydrin
Compounds
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Ninhydrin is an organic compound with the formula C₆H₄(CO)₂C(OH)₂. It is used to detect ammonia and amines. Upon reaction with these amines, ninhydrin gets converted into deep blue or purple derivatives, which are called Ruhemann's purple. Wikipedia
Formula: C9H6O4
Molar mass: 178.14 g/mol
IUPAC ID: 2,2-Dihydroxyindane-1,3-dione
Density: 862 kg/m³
Appearance: White solid
Solubility in water: 20 g L−1
ECHA InfoCard: 100.006.926