Melting point	210-215 °C (dec.)(lit.)
Boiling point	301.8±42.0 °C(Predicted)
density	1.7500 (estimate)
storage temp.	Store below +30°C.
solubility	Soluble in benzene, methanol, acetic acid and dioxane.Slightly soluble in chloroform,, dichloromethane.
form	Crystalline Powder or Crystals
color	Yellow to orange
Water Solubility	reacts
Sensitive	Moisture Sensitive
Merck	14,3063
BRN	747939
InChIKey	HZNVUJQVZSTENZ-UHFFFAOYSA-N
CAS DataBase Reference	84-58-2(CAS DataBase Reference)
NIST Chemistry Reference	1,4-Cyclohexadiene-1,2-dicarbonitrile, 4,5-dichloro-3,6-dioxo-(84-58-2)
EPA Substance Registry System	1,4-Cyclohexadiene-1,2-dicarbonitrile, 4,5-dichloro-3,6-dioxo- (84-58-2)

1,2-Dichloro-4,5-Dicyanobenzoquinone;2,3,5,6-Dichlorodicyanoquinone;2,3-dichloro-5,6-dicyano-4-benzoquinone;2,3-Dichloro-5,6-dicyano-para-benzoquinone;2-dicarbonitrile,4,5-dichloro-3,6-dioxo-4-cyclohexadiene-1;1,4-Cyclohexadiene-1,2-dicarbonitrile, 4,5-dichloro-3,6-dioxo-;2,3-DICHLORO-5,6-DICYANO-P-BENZOQUINONE ( DDQ );2,3-DICHLORO-5,6-DICYANO-P-BENZOQUINONE ( DDQ ) 99

2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) has a variety of applications. DDQ is a deprotection agent for ketals, acetals, and thioacetals. It is a useful electron transfer reagent for synthesis of quinolones and an oxidizing agent used to synthesize steroids. Additionally, DDQ is used with Ph3P to synthesize 1,2-benzisoxazoles.

An oxidizing agent, especially in steroid synthesis.
2,3-Dichloro-5,6-dicyano-1,4-benzoquinone is used as a reagent for oxidative couplings and cyclization reactions and dehydrogenation of alcohols, phenols and steroid ketones. It is also used in the synthesis of 1,2-benzisoxazoles. It is a useful electron-transfer reagent for synthesis of quinolines from imines and alkynes or alkenes.