4-エチル安息香酸

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

  H319：強い眼刺激

• 注意書き

  P264：取扱い後は皮膚をよく洗うこと。

  P264：取扱い後は手や顔をよく洗うこと。

  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。

  P337+P313：眼の刺激が続く場合：医師の診断/手当てを受けること。

4-エチル安息香酸 価格

MSDS Information

• 4-Ethylbenzoic acid

4-エチル安息香酸 化学特性,用途語,生産方法

• 外観

  白色～うすい黄褐色、結晶性粉末～粉末

• 化学的特性

  It is a white to beige powder with a melting point of 112-113℃. It is not soluble in water, but can be dissolved in benzene and toluene.

• 使用

  4-Ethylbenzoic acid was used in the synthesis of ethyl 4-vinyl-α-cyano-β-phenylcinnamate. It was also used to functionalize the edge of “pristine” graphite in the presence of polyphosphoric acid/phosphorus pentoxide.

• 主な応用

  4-Ethylbenzoic acid has various applications such as being used as an intermediate in the production of pesticide insecticides, including tebufenozide and methoxyfenozide, as well as an initiator of carbon nanotube materials. Additionally, it can also use as an intermediate in the production of liquid crystals.

• 製造方法

  The preparation of 4-ethylbenzoic acid can be done in the following steps:
  1. Add ethylbenzene and trichloroacetaldehyde in the reaction kettle.
  2. Add anhydrous aluminum trichloride in batches at 0 °C.
  3. Stir and react at -10 ~ 0 °C for 2 hours after the addition.
  4. Add dilute hydrochloric acid to the mixed solution to decompose the remaining aluminum trichloride.
  5. Wash with NaHCO3 and water.
  6. Distill the organic layer to recover ethylbenzene.
  7. Distill to obtain p-ethylbenzene-2,2,2-trichloroethanol.
  8. Dissolve the trichloroethanol in methanol.
  9. Add NaOH solution and stir.
  10. Add dropwise 30% hydrogen peroxide aqueous solution to the mixture.
  11. Stir until the trichloroethanol disappears.
  12. Acidify with HCl to obtain crystalline 4-ethylbenzoic acid.

• 一般的な説明

  4-Ethylbenzoic acid reacts with lanthanum nitrate in aqueous solution to yield the polymer catena-poly[[aqua(4-ethylbenzoic acid-κO)lanthanum(III)]-tri-μ-4-ethylbenzoato].

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