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P-Benzoquinone assay ≥%
Initial melting point ℃≥
Residue on ignition
1,4-Benzoquinone, commonly known as para-quinone, is a chemical compound with the formula
C6H4O2. In a pure state, it forms bright-yellow crystals with a characteristic irritating odor, resembling
that of chlorine, bleach, and hot plastic. This six-membered ring compound is the oxidized derivative
of 1,4-hydroquinone. The molecule is multifunctional: it exhibits properties of a ketone, forming an oxime;
an oxidant, forming the dihydroxy derivative; and an alkene, undergoing addition reactions, especially
those typical for α,β-unsaturated ketones. 1,4-Benzoquinone is sensitive toward both strong mineral
acids and alkali, which cause condensation and decomposition of the compound.
Quinone is mainly used as a precursor to hydroquinone, which is used in photography and
rubber manufacture as a reducing agent and antioxidant.