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| 化学名: | キンヒドロン | | 英語化学名: | Quinhydrone | | 别名: | 2,5-Cyclohexadiene-1,4-dione, compd. with 1,4-benzenediol (1:1);2,5-Cyclohexadiene-1,4-dione,compd.with1,4-benzenediol(1:1);2,5-CYCLOHEXADIENE-1,4-DIONE CMPD WITH 1,4-BENZENEDIOL;Quinhydrone;2,5-Cyclohexadiene-1,4-dionecompdwith1,4-benzenediol(1:1);Greenhydroquinone;BALSAM CANADA, FILTERED FOR MICROSCOPY;QUINHYDRONE 98+% FOR ANALYTICAL PURPOSE;QuinhydroneGr;p-benzoquinone hydroquinone complex | | CAS番号: | 106-34-3 | | 分子式: | C12H10O4 | | 分子量: | 218.21 | | EINECS: | 203-387-6 | | カテゴリ情報: | Hydroquinone;API intermediates;Benzoquinones | | Mol File: | 106-34-3.mol |  |
| 融点 | 167-172 °C (lit.) | | 沸点 | 285 °C | | 比重(密度) | 1.32 | | 屈折率 | 1.4270 (estimate) | | 貯蔵温度 | Store below +30°C. | | 溶解性 | 4g/l | | 外見 | Crystalline Powder | | 比重 | 0.863 (20/4℃) | | 色 | Dark green | | 水溶解度 | 4 g/L (20 ºC) | | Sensitive | Light Sensitive | | Merck | 14,8058 | | BRN | 3919222 | | 安定性： | Stable. Incompatible with strong oxidizing agents. | | LogP | 0.644 (est) | | CAS データベース | 106-34-3(CAS DataBase Reference) | | NISTの化学物質情報 | Quinhydrone(106-34-3) | | EPAの化学物質情報 | Quinhydrone (106-34-3) |
| 主な危険性 | Xn,N | | Rフレーズ | 22-36/37/38-50 | | Sフレーズ | 26-36-61-37/39-29 | | RIDADR | UN 2811 6.1/PG 3 | | WGK Germany | 3 | | RTECS 番号 | VA4550000 | | TSCA | Yes | | HSコード | 2942 00 00 | | 国連危険物分類 | 6.1 | | 容器等級 | III | | 毒性 | LD50 orally in rats: 225 mg/kg (Woodward) |
| | キンヒドロン Usage And Synthesis |
| 外観 | 暗緑色, 結晶～結晶性粉末 | | 溶解性 | 熱水, エタノール及びアセトンに溶けやすく, 冷水にわずかに溶ける。 | | 解説 | キンヒドロン,青緑色の光沢をもつ赤褐色の結晶．融点171 ℃．エタノール，エーテルに易溶，水に不溶．溶液中では大部分両成分に解離している．キンヒドロン電極として水素イオン指数の測定に利用される．
森北出版「化学辞典（第2版） | | 用途 | キンヒドロン電極用。 | | 製法 | キノンを還元，またはヒドロキノンを酸化する際に途中で生成するが，キノンとヒドロキノンのアルコール溶液を混合すればキンヒドロンが析出するキンヒドロン． | | 化学的特性 | a dark green crystalline powder which is a complex formed by benzoquinone and hydroquinone.
Quinhydrone is a general reagent used in potentiometric titrations. It can also be used as a π-acceptor in the formation of charge-transfer complex of analytes for spectrophotometric analysis. | | 使用 | In pH determinations (quinhydrone electrode). | | 使用 | Used to measure the hydrogen ion concentration (pH) of a solution in a chemical experiment. It provides an alternative to the commonly used glass electrode in a pH meter. | | 使用 | Quinhydrone is a hydrogen bonded 1:1 charge transfer complex of hydroquinone and p-benzo-quinone having semiconducting properties.
Quinhydrone is addition compound of one mol hydroquinone and one mol Benzoquinone.
Quinhydrone electrode is a type of redox electrode which can be used to measure the hydrogen ion concentration (pH) of a solution in a chemical experiment.
Quinhydrone/methanol treatment for the measurement of carrier lifetime in crystalline silicon substrates has been reported. Surface passivation of silicon substrates by quinhydrone/ethanol treatment has been investigated. | | 定義 | ChEBI: Quinhydrone is an addition compound. It contains a 1,4-benzoquinone and a hydroquinone. | | 定義 | The so-called quinhydrone electrode, containing equivalent amounts of p-benzoquinone and hydroquinone, is used to determine hydrogen ion concentrations of unknown solutions. Hydroquinone is used principally as a photographic developing agent. The main advantages of the quinhydrone electrode are low internal resistance, rapid response, high accuracy, simplicity, free of errors due to the presence of nonreducing gases, and free of salt errors. Major limitations are that it contaminates the solution, cannot be used to monitor a flowing solution, the solution must be free of strong oxidizing and reducing agents, and it is limited to a pH range of 1 to 9. In alkaline solution, the weakly acidic H2Q is neutralized and is subject to oxidation by air and dissolved oxygen. The main application of the quinhydrone electrode is in nonaqueous solvents where reproducible results are obtained in a variety of solvents. The tetra-chloro derivative (chloranil electrode) is even more useful.
| | 一般的な説明 | Quinhydrone/methanol treatment for the measurement of carrier lifetime in crystalline silicon substrates has been reported. Surface passivation of silicon substrates by quinhydrone/ethanol treatment has been investigated. | | 危険性 | Toxic by ingestion. | | 純化方法 | Crystallise quinhydrone from H2O at 65o , then dry it in vacuo.[Beilstein 7 H 617, 7 IV 2069.] |
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