エリオクロムブラックT

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Danger

• 危険有害性情報

  H411：長期的影響により水生生物に毒性

• 注意書き

  P273：環境への放出を避けること。

  P391：漏出物を回収すること。

  P501：内容物/容器を．．．に廃棄すること。

エリオクロムブラックT 価格

MSDS Information

• C.I. 14645

エリオクロムブラックT 化学特性,用途語,生産方法

• 外観

  黒色粉末～結晶

• 外観

  紫色～濃い紫色～褐色粉末～結晶

• 解説

  エリオクロムブラックT．C.I.14645，C.I.Mordant Black 11ともいう．略号EBT．1-アミノ-2-ヒドロキシ-6-ニトロ-4-ナフタレンスルホン酸と1-ナフトールから合成される．黒褐色の結晶性粉末．熱湯，メタノール，エタノールに可溶．アゾ系媒染染料．主として，羊毛，ナイロン用で，クロム後処理法により帯青黒色が得られる．キレート滴定用指示薬．

• 用途

  エリオクロムブラックT（Eriochrome Black T）は、金属指示薬であり、アゾ染料の一種。

• 化学的特性

  black powder

• 使用

  Eriochrome black T is used as an indicator in analytical chemistry. It is also used in the detection of rare earth metals. It finds application in dyeing and printing of wool fabric, dyeing of silk and nylon as well as in leather dyeing. It can be used in the spectrophotometric determination of diphenhydramine hydrochloride in pharmaceutical preparations. As a complexometric indicator, it is useful in the determination of hardness of water.

• 製造方法

  4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid diazotization, and Naphthalen-1-ol?coupling.

• 一般的な説明

  Eriochrome^? Black T is used as an indicator for complexometric titrations. It functions as an acid-base indicator. Eriochrome^? Black T forms complex with Ca²⁺ and Mg²⁺, but it binds more strongly to Mg²⁺ ions.

• 純化方法

  The sodium salt (200g) is converted to the free acid by stirring with 500mL of 1.5M HCl, and, after several minutes, the slurry is filtered on a sintered-glass funnel. The process is repeated and the material is air dried after washing with acid. It is then extracted with *benzene for 12hours in a Soxhlet extractor, the *benzene solution is evaporated and the residue is air dried. A further desalting with 1.5M HCl (1L) is followed by crystallisation from dimethylformamide (in which it is very soluble) by forming a saturated solution at the boiling point, and allowing to cool slowly. The crystalline dimethylammonium salt so obtained is washed with *benzene and treated repeatedly with dilute HCl to give the insoluble free acid which, after air drying, is dissolved in alcohol, filtered and evaporated. The final material is air dried, then dried in a vacuum desiccator over Mg(ClO4)2. The purified acid is converted to the dimethylammonium salt with Me2NH. [Diehl & Lindstrom, Anal Chem 31 414 1959]. It is an indicator in the complexometry of alkaline earth metals. [Beilstein 16 IV 429.]

エリオクロムブラックT 上流と下流の製品情報

エリオクロムブラックT 生産企業

Global(405)Suppliers

エリオクロムブラックT スペクトルデータ(IR1、IR2)

1787-61-7, エリオクロムブラックT キーワード