1 4-Benzoquinone

1,4-Benzoquinone

CAS: 106-51-4

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.

Applications

Quinone is mainly used as a precursor to hydroquinone, which is used in photography and

rubber manufacture as a reducing agent and antioxidant.