申请人:Saudi Basic Industries Corporation
公开号:EP2754649A1
公开(公告)日:2014-07-16
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.
本发明涉及一种确定对苯二甲酸组合物中4-羧基苯甲醛浓度的方法,包括a)将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,以获得4-羧基苯甲醛2,4-二硝基苯肼,b)确定4-羧基苯甲醛2,4-二硝基苯肼的浓度。