4-PHENYLETHYNYLPHTHALIC ANHYDRIDE

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Warning

• 유해·위험 문구

  H315：피부에 자극을 일으킴

  H319：눈에 심한 자극을 일으킴

• 예방조치문구

  P264：취급 후에는 손을 철저히 씻으시오.

  P264：취급 후에는 손을 철저히 씻으시오.

  P280：보호장갑/보호의/보안경/안면보호구를 착용하시오.

4-PHENYLETHYNYLPHTHALIC ANHYDRIDE 화학적 특성, 용도, 생산

• 화학적 성질

  Light yellow to light yellow-green crystal or powder

• 제조 방법

  The preparation of 4-phenylethynylphthalic anhydride is as follows:4-phenyl ethynyl dimethyl phthalate (33.6 g) was suspended in a mixed medium comprising water and methanol and a 25% by mass aqueous solution of sodium hydroxide (40 g) was dropwise added thereto with stirring. The resultant reaction mixture was stirred at 60° C. for 3 hours and, then, after confirming the completion of the reaction, cooled to the inside temperature of 30° C. Thereafter, 1 g of active carbon was added thereto, and, then, stirred for 30 minutes maintaining the same temperature. The resultant mixture was filtered to remove the active carbon, and rinsed with water. The filtrate and a rinsing solution were combined and, then, toluene and ethyl acetate were added to the resultant mixture. Concentrated hydrochloric acid (28 g) was dropwise added to the resultant 2-layered reaction mixture. The mixture was stirred for 30 minutes at room temperature and was allowed to stand, so that an organic layer containing 4-phenyl ethynyl phthalic acid was separated. After partially concentrating the organic layer, acetic anhydride (17 g) was added thereto, and the reaction mixture was refluxed with heating for 4 hours. After the reaction was completed, the resultant reaction mixture was cooled, so that 4-phenyl ethynyl phthalic anhydride was precipitated as a crystal. The crystal was filtered, rinsed and dried, to thereby obtain 26.6 g of 4-phenyl ethynyl phthalic anhydride as a pale yellow crystal. The yield was 94% on the basis of 4-phenyl ethynyl dimethyl phthalate.

  

4-PHENYLETHYNYLPHTHALIC ANHYDRIDE 준비 용품 및 원자재

4-PHENYLETHYNYLPHTHALIC ANHYDRIDE 공급 업체

Global(176)Suppliers

4-PHENYLETHYNYLPHTHALIC ANHYDRIDE 관련 검색