페닐 벤조산염

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Warning

• 유해·위험 문구

  H302：삼키면 유해함

  H315：피부에 자극을 일으킴

• 예방조치문구

  P264：취급 후에는 손을 철저히 씻으시오.

  P264：취급 후에는 손을 철저히 씻으시오.

  P270：이 제품을 사용할 때에는 먹거나, 마시거나 흡연하지 마시오.

  P280：보호장갑/보호의/보안경/안면보호구를 착용하시오.

  P301+P312：삼켜서 불편함을 느끼면 의료기관(의사)의 진찰을 받으시오.

  P302+P352：피부에 묻으면 다량의 물로 씻으시오.

  P332+P313：피부 자극이 생기면 의학적인 조치· 조언을 구하시오.

페닐 벤조산염 화학적 특성, 용도, 생산

• 화학적 성질

  white crystalline powder

• 용도

  Phenyl Benzoate is a key reagent in the synthesis of soluble polyimides using dianhydride/diamine derivatives.

• 제조 방법

  A glass tube was charged with benzoic anhydride (1.13 g, 5.00 mmol), diphenyl carbonate (1.07 g, 5.00 mmol), and either Ti(OBu)4 (0.020 g, 0.059 mmol) or Sn(OMe)2Bu2 (0.017 g, 0.059 mmol) as catalyst. The reaction mixture was heated at 300 ℃ for 30 min. After cooling to room temperature, the crude product obtained was dissolved in dichloromethane (10 mL) and the solution was filtered. The solvent was evaporated and the product obtained after column chromatography (silica gel; CH2Cl2/cyclohexane, 4:1) was recrystallized from petroleum ether; yield 95%.

• 정의

  ChEBI: A benzoate ester obtained by the formal condensation of phenol with benzoic acid.

• 일반 설명

  Phenyl benzoate is a phenyl ester of benzoic acid. Crystal structure of phenyl benzoate has been determined from 844 microdensitometer-measured intensities. All bond lengths and angles were reported to be normal. Phenyl benzoate undergoes Fries rearrangement catalyzed by heteropoly acids to yield the acylated phenols and esters.

• Safety Profile

  Moderately toxic by ingestion. When heated it emits acrid smoke and irritating fumes.

• Purification Methods

  Crystallise the ester from EtOH using ca twice the volume needed for complete dissolution at 69o. [Beilstein 9 IV 303.]

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