4-クロロフタル酸無水物

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

  H318：重篤な眼の損傷

• 注意書き

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

  P305+P351+P338：眼に入った場合：水で数分間注意深く洗うこと。次にコ ンタクトレンズを着用していて容易に外せる場合は外す こと。その後も洗浄を続けること。

  P310：ただちに医師に連絡すること。

4-クロロフタル酸無水物 価格

4-クロロフタル酸無水物 化学特性,用途語,生産方法

• 外観

  白色～うすい黄褐色、フレーク状

• 使用上の注意

  アルゴン封入

• 化学的特性

  4-Chlorophthalic anhydride has a melting point of around 99 °C. Like most acid anhydrides, it can hydrolyze in the presence of water.

• 使用

  4-chlorophthalic anhydride is an important monomer synthesis of polyimide and polyimide is considered to be the highest tolerance has been industrialized in the polymer and the shape and chemical stability of other materials can not like the outburst strength, wear resistance and extreme temperatures, excellent, has been widely used in aviation, aerospace, microelectronics and atom to the field of high technology. 4- of 4-chlorophthalic anhydride is mainly used in the synthesis of diphenyl ether dianhydride anhydride, two single and two double ether, thioether dianhydride anhydride two, two, and two amine polymerization ring was a series of polyimide engineering plastic with excellent performance. 4- of 4-chlorophthalic anhydride is not only the ideal raw material for the synthesis of various intermediates of polyimide, and can be used as a drug or pesticide.

• Synthesis Reference(s)

  Tetrahedron Letters, 23, p. 371, 1982 DOI: 10.1016/S0040-4039(00)86833-1

• 製造方法

  A preparation method of 4-chlorophthalic anhydride uses monosodium phthalic acid as a raw material, uses water as a medium, uses a weak alkali solution as a pH regulator of a reaction system, and directly performs chlorination reaction with chlorine gas. The weak alkali solution is used as the pH regulator of the reaction system, which is beneficial to stabilizing the pH value of the reaction system, and can obtain high-yield 4-chlorophthalic acid monosodium coarse salt. The crude salt is desalted, dehydrated and closed to obtain a crude product of 4-chlorophthalic anhydride, which is purified by rectification to obtain high-purity 4-chlorophthalic anhydride.

4-クロロフタル酸無水物 上流と下流の製品情報

4-クロロフタル酸無水物 生産企業

Global(334)Suppliers

4-クロロフタル酸無水物 スペクトルデータ(¹HNMR、¹³CNMR、IR1、IR2、MS)

118-45-6, 4-クロロフタル酸無水物 キーワード