hydroquinone

/hahy-droh-kwi-nohn, -druh-kwin-ohn/US // ˌhaɪ droʊ kwɪˈnoʊn, -drəˈkwɪn oʊn //UK // (ˌhaɪdrəʊkwɪˈnəʊn) //

氢醌,对苯二酚,氢化奎宁,氢化奎尼酮

Definitions

n.名词 noun

1
Chemistry.
- : a white, crystalline compound, C6H6O2, formed by the reduction of quinone: used chiefly in photography and to inhibit autoxidation reactions.

By reaction with sodium sulphite it is converted into a hydroquinone sulphonate of deep purple colour.
Hydroquinone was obtained by Caventou and Pelletier by heating quinic acid, but these chemists did not recognize its true nature.
When phenol is oxidized in acid solution by chlorine, tetrachlorquinone is obtained, a compound also obtainable from hydroquinone.
When hydrolyzed by mineral acids or emulsin, it yields glucose and hydroquinone.
Hydroquinone as a developer was introduced this year by Eder and Toth, but it did not make much progress at first.