Ninhydrin 99.5% 5g
34350-5g

Ninhydrin (2,2-dihydroxyindane-1,3-dione) 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. Ninhydrin is most commonly used to detect fingerprints in forensic cases, as the terminal amines of lysine residues in peptides and proteins sloughed off in fingerprints react with ninhydrin.

Formula: C₉H₆O₄ ; Mwt 178.14 g/mol ;CAS 485-47-2

IUPAC ID: 2,2-Dihydroxyindane-1,3-dione

Density: 862 kg/m³

Solubility in water: 20 g L⁻¹

Appearance: White solid