cis-4-シクロヘキセン-1,2-ジカルボン酸無水物

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

  H317：アレルギー性皮膚反応を起こすおそれ

  H318：重篤な眼の損傷

  H334：吸入するとアレルギー、喘息または、呼吸困難 を起こすおそれ

  H412：長期的影響により水生生物に有害

• 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。

  P273：環境への放出を避けること。

  P280：保護手袋/保護衣/保護眼鏡/保護面を着用するこ と。

  P302+P352：皮膚に付着した場合：多量の水と石鹸で洗うこと。

  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。

cis-4-シクロヘキセン-1,2-ジカルボン酸無水物 価格

MSDS Information

• cis-4-Cyclohexene-1,2-dicarboxylic anhydride

cis-4-シクロヘキセン-1,2-ジカルボン酸無水物 化学特性,用途語,生産方法

• 外観

  白色～わずかにうすい黄色, フレーク

• 溶解性

  水に難溶, エタノールに可溶。熱エタノール(99.5)に溶ける。ベンゼンに可溶。エーテル、石油エーテルに微溶。

• 説明

  Tetrahydrophthalic anhydride is an organic compound with the formula C6H8C2O3. The compound exists as two isomers, this article being focused on the more common cis isomer. It is a precursor to other compounds including the dicarboxylic acid tetrahydrophthalic acid as well the tetrahydrophthalimide, which is a precursor to the fungicide Captan. It is a white solid that is soluble in organic solvents.
  Tetrahydrophthalic anhydride, the cis isomer, is prepared by the Diels-Alder reaction of butadiene and maleic anhydride.

• 化学的特性

  Tetrahydrophthalic Anhydride (THPA) is a white crystalline powder or FLAKES. It is slightly soluble in benzene and acetone and it is also sensitive to moisture.

• 使用

  Tetrahydrophthalic Anhydride is an anhydride hardener mainly used in the fields of coatings, epoxy resin curing agents, polyester resins, adhesives, plasticizers, pesticides, etc. It is also used as a chemical intermediate for light colored alkyds.
  Tetrahydrophthalic Anhydride is an organic compound obtained from the reaction of Maleic Anhydride and Butadiene.

• 製造方法

  A flask containing 500 ml of dry benzene and 196 gm (2 moles) of maleic anhydride is heated with a pan of hot water while butadiene is introduced rapidly (0.6-0.8 liter/min) from a commercial cylinder. The solution is stirred rapidly and the heating is stopped after 3-5 min when the temperature reaches 50°C. In 15-25 min the reaction causes the temperature of the solution to reach 70-75°C. The absorption of the rapid stream of butadiene is nearly complete in 30-40 min. The addition of butadiene is continued at a slower rate for a total of 2\ hr. The solution is poured into a 1-liter beaker which is covered and kept at 0-5°C overnight. The product is collected on a large Buchner funnel and washed with 250 ml of b.p. 35-60°C petroleum ether. A second crop is obtained by diluting the filtrate with an additional 250 ml of petroleum ether. Both crops are dried to constant weight in an oven at 70-80°C to yield 281.5-294.5 gm (96- 97%, m.p. 99-102°C). Recrystallization from ligroin or ether raises the melting point to 103-104°C.
  

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cis-4-シクロヘキセン-1,2-ジカルボン酸無水物 スペクトルデータ(¹HNMR、IR1、IR2、MS、Raman)

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