Bindone is an organic compound with the formula C₆H₄COCH₂C=C(CO)₂C₆H₄. A yellowish solid, it is classified as an aromatic triketone.

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Bindone

Names
Preferred IUPAC name [1,2′-Biindenylidene]-1′,3,3′(2H)-trione
Identifiers
CAS Number	1707-95-5
3D model (JSmol)	Interactive image
ChemSpider	14812
ECHA InfoCard	100.015.415
EC Number	216-956-9
PubChem CID	15569
UNII	INB7800050
CompTox Dashboard (EPA)	DTXSID00168932
InChI InChI=1S/C18H10O3/c19-15-9-14(10-5-1-2-6-11(10)15)16-17(20)12-7-3-4-8-13(12)18(16)21/h1-8H,9H2 Key: YMFDOLAAUHRURP-UHFFFAOYSA-N
SMILES C1C(=C2C(=O)C3=CC=CC=C3C2=O)C4=CC=CC=C4C1=O
Properties
Chemical formula	C18H10O3
Molar mass	274.275 g·mol−1
Appearance	yellow solid
Density	1.444 g/cm3[1]
Melting point	208–211 °C (406–412 °F; 481–484 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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Bindone is used as a colour test for the detection of primary amines. It turns violet in their presence. Aromatic amines turn this reagent blue.^[2]

Bindone can be prepared by the condensation of two equivalents of 1,3-indandione.^[3]