二安息香酸銅(II)

危険有害性情報のコード(GHS)

• 注意喚起語

  Warning

二安息香酸銅(II) 価格

二安息香酸銅(II) 化学特性,用途語,生産方法

• 説明

  Copper benzoate is the chemical compound with the formula Cu(C₆H₅CO₂)₂. This coordination complex is derived from the cupric ion and the conjugate base of benzoic acid. Because copper emits blue in a flame, this salt has found some use as a source of blue light in fireworks.

• 化学的特性

  Blue, crystalline powder; odorless.Slightly soluble in cold water, acids, and alcohol.

• 物理的性質

  Copper (II) benzoates exists in at least two structural forms , depending on the degree of hydration. As for copper (II) acetate , the benzoate adopts a "Chinese lantern" structure, wherein a pair of copper centers are linked by four bridging carboxylate ligands. Typically one site on each copper center is occupied by water, which can be replaced by other ligands . A hydrated form is also known, wherein each Cu (II) center is bound to four water ligands and benzoate .

• 使用

  Cupric benzoate monohydrate (cas# 533-01-7) is used as a catalyst in the preparation of positive resist compositions comprising sulfonium compounds as acid diffusion inhibitors for high resolution and minimal line edge roughness.

• 製造方法

  In laboratory, copper benzoate can be made by combining aqueous solutions of potassium benzoate with copper sulfate. Copper benzoate precipitates as a pale blue solid :
  2 C₆H₅COOK + CuSO₄ →Cu(C₆H₅COO)₂ + K₂SO₄
  The primary use of this of this compound is in production of blue flame in fireworks. Copper benzoate made from sodium benzoate for use in fireworks may result in strong yellow dilution of the flame unless the precipitate is carefully washed to remove sodium ion (which emits brightly yello). Emission from potassium does not complicate the emission spectrum.

• 純化方法

  Recrystallise it from hot water. Its solubility in EtOH/*C6H6 (90%) at 25o is 0.1%. [Crawford & Stewart J Chem Soc 228, 289 1953, Beilstein 9 H 84, 9 I 60, 9 III 376, 9 IV 280.]

二安息香酸銅(II) 生産企業

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533-01-7, 二安息香酸銅(II) キーワード