2,5-ビス(5-tert-ブチル-2-ベンゾオキサゾリル)チオフェン

危険有害性情報のコード(GHS)

• 絵表示(GHS)

  

• 注意喚起語

  Warning

• 危険有害性情報

  H315：皮膚刺激

  H319：強い眼刺激

• 注意書き

  P261：粉じん/煙/ガス/ミスト/蒸気/スプレーの吸入を避ける こと。

  P271：屋外または換気の良い場所でのみ使用すること。

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

2,5-ビス(5-tert-ブチル-2-ベンゾオキサゾリル)チオフェン 価格

MSDS Information

• Fluorescent Brightener 184

2,5-ビス(5-tert-ブチル-2-ベンゾオキサゾリル)チオフェン 化学特性,用途語,生産方法

• 外観

  白色～うすい黄色, 結晶性粉末～粉末

• 定義

  本品は、次の化学式で表される複素環式化合物である。

• 溶解性

  トルエンに溶ける。

• 化粧品の成分用途

  皮膚コンディショニング剤

• 化学的特性

  light yellow-green crystals

• 使用

  2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene is used as an optical brightener which converts UV light into visible light. It is also used as a fluorescent brightener for thermoplastic resins of polyvinyl chloride, acrylic resin, polyester fiber, paint, coating and printing ink. It is also useful in detecting the presence of thin-film electrical contact lubricants.

• 安全性プロファイル

  Low toxicity by ingestion. Whenheated to decomposition it emits toxic vapors of NOx andSOx.

• 合成

  2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene, also known as fluorescent brightener 0B, is used as a mixing raw material for plastics, coatings, road marking paints, etc., to achieve a whitening effect. In the prior art, the preparation method is to add a mixed solution of trichlorobenzene and toluene into a reaction kettle, then add 0B acid (i.e. thiophene 2,5-dicarboxylic acid), 0B phenol (i.e. p-tert-butyl-o-aminophenol) and boric acid, heat to about 120°C for condensation reaction, evaporate the water generated by the reaction together with the toluene, release the water with a water separator, and return the toluene to the reaction kettle. When the temperature of the reaction material rises to above 180°C, the toluene is evaporated, and the temperature continues to rise for reaction. The water is continuously separated by utilizing the immiscibility of trichlorobenzene and water until the reaction temperature reaches about 230°C. Based on the dehydration phenomenon, the reaction is judged to be complete, and then the material is cooled to below 30°C. The product is crystallized in trichlorobenzene, solid-liquid separation is performed, the trichlorobenzene mother liquor is used for recovery, and the obtained solid material is refined with xylene to obtain 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene.

2,5-ビス(5-tert-ブチル-2-ベンゾオキサゾリル)チオフェン 上流と下流の製品情報

2,5-ビス(5-tert-ブチル-2-ベンゾオキサゾリル)チオフェン 生産企業

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2,5-ビス(5-tert-ブチル-2-ベンゾオキサゾリル)チオフェン スペクトルデータ(¹HNMR、IR1、IR2、MS)

7128-64-5, 2,5-ビス(5-tert-ブチル-2-ベンゾオキサゾリル)チオフェン キーワード