Catechol

Japanese: カテコール
Catechol

Pyrocatechol, 1,2-dihydroxybenzene. C 6 H 6 O 2 (110.11). It is obtained by dry distillation of catechu, but can also be synthesized by alkaline fusion of o -chlorophenol or demethylation of guaiacol. Colorless prismatic crystals. Melting point 104 °C, boiling point 245 °C. 1.344. K a 3.3×10 -10 (18 °C). Easily sublimed, soluble in water, alcohol, and ether. Easily oxidized, especially in alkaline solutions, which tend to discolor in air. Forms a redox system with o -quinone and acts as one of the electron transport systems in the body. Used as a photographic developing agent in combination with metol ( p -methylaminophenol). It is also used as an analytical reagent, as it forms complexes with metals in alkaline solutions. [CAS 120-80-9]

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

Japanese:

pyrocatechol,1,2-dihydroxybenzene.C6H6O2(110.11).カテキューの乾留によって得られるが,o-クロロフェノールのアルカリ融解,グアイアコールの脱メチル化などによって合成される.無色の稜柱状晶.融点104 ℃,沸点245 ℃.1.344.Ka 3.3×10-10(18 ℃).昇華しやすく,水,アルコールあるいはエーテルに可溶.酸化されやすく,とくにアルカリ溶液は空気中で変色しやすい.o-キノンとの間に酸化還元系をつくり,生体内電子伝達系の一つとしてはたらく.メトール(p-メチルアミノフェノール)と組み合わせて写真用現像薬として用いられる.また,アルカリ溶液中で金属と錯体をつくるので,分析用試薬としても用いられる.[CAS 120-80-9]

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