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| Description 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (or DDQ) is the chemical reagent with formula C6Cl2(CN)2O2. This oxidant is useful for the dehydrogenation of alcohols, phenols, and steroid ketones in organic chemistry. DDQ decomposes in water, but is stable in aqueous mineral acid. Basic Info Chemical Name 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone Synonyms 4,5-dichloro-3,6-dioxocyclohexa-1,4-diene-1,2-dicarbonitrile; 1,4-Cyclohexadiene-1,2-dicarbonitrile, 4,5-dichloro-3,6-dioxo-; CAS No. 84-58-2 Molecular Formula C8Cl2N2O2 Molecular Weight 227.00400 PSA 81.72000 LogP 1.17116 Properties Appearance & Physical State yellow to orange powder Density 1.7 g/cm3 Boiling Point 301.8ºC at 760 mmHg Melting Point 213-216ºC Flash Point 136.3ºC Refractive Index 1.601 Water Solubility reacts Stability Stable under normal temperatures and pressures. Storage Condition 0-6ºC |
