Method for determinng impurity concentration in terephthalic acid
    15.
    发明公开
    Method for determinng impurity concentration in terephthalic acid 审中-公开
    对对方的Verfahren zum Bestimmen der Verunreinigungskonzentration

    公开(公告)号:EP2754649A1

    公开(公告)日:2014-07-16

    申请号:EP13000112.6

    申请日:2013-01-10

    IPC分类号: C07C51/265 G01N30/06

    摘要: The present invention relates to a method for determining the concentration of 4-carboxy benzaldehyde in a terephthalic acid composition, comprising a) reacting 4-carboxy benzaldehyde in the terephthalic acid composition with 2,4-dinitrophenylhydrazine to obtain 4-carboxy benzaldehyde 2,4-dinitrophenylhydrazone and b) determining the concentration of 4-carboxy benzaldehyde 2,4-dinitrophenylhydrazone.

    摘要翻译: 本发明涉及一种测定对苯二甲酸组合物中4-羧基苯甲醛浓度的方法,包括a)使对苯二甲酸组合物中的4-羧基苯甲醛与2,4-二硝基苯肼反应,得到4-羧基苯甲醛2,4 二硝基苯腙,b)测定4-羧基苯甲醛2,4-二硝基苯腙的浓度。