hydroquinone

[ hahy-droh-kwi-nohn, -druh-kwin-ohn ]

noun

, Chemistry.

1. a white, crystalline compound, C 6 H 6 O 2 , formed by the reduction of quinone: used chiefly in photography and to inhibit autoxidation reactions.

hydroquinone

/ ˌhaɪdrəʊˈkwɪnɒl; ˌhaɪdrəʊkwɪˈnəʊn /

noun

1. a white crystalline soluble phenol used as a photographic developer; 1,4-dihydroxybenzene. Formula: C 6 H 4 (OH) 2 Also calledquinol

Word History and Origins

Origin of hydroquinone¹

First recorded in 1860–65; hydro- ¹ + quinone

Example Sentences

By reaction with sodium sulphite it is converted into a hydroquinone sulphonate of deep purple colour.

From Project Gutenberg

Hydroquinone was obtained by Caventou and Pelletier by heating quinic acid, but these chemists did not recognize its true nature.

From Project Gutenberg

When phenol is oxidized in acid solution by chlorine, tetrachlorquinone is obtained, a compound also obtainable from hydroquinone.

From Project Gutenberg

When hydrolyzed by mineral acids or emulsin, it yields glucose and hydroquinone.

From Project Gutenberg

Hydroquinone as a developer was introduced this year by Eder and Toth, but it did not make much progress at first.

From Project Gutenberg