马来酸酐作为杂质，主要是在邻苯二甲酸酐的生产过程中产生的。控制的关键在于优化工艺条件，抑制其生成或促进其转化/去除。

主要来源：在萘或邻二甲苯氧化生产PA的工艺中，MA是重要的中间体或副产物。控制不当会导致产品中MA残留过高。

 

浩瀚色谱（山东）应用技术开发有限公司利用气相色谱对邻苯二甲酸酐中有机杂质进行分离,用氢火焰离子化检测器进行检测,峰面积外标法进行定量分析。对该方法的准确度、度、检出限数据进行了评价。

名称：毛细管柱

型号：HH-1701

规格：30m*0.25mm*0.25um

温度：280°C

应用：SNT 4373-2015 邻苯二甲酸酐中马来酸酐的测定气相色谱法

应用：

安捷伦490在线/便携，4890,5890,6890,7820,7890,8860,8890

岛津GC-14C，GC-2010，GC-2014，GC-2030

赛默飞1310,1300,1610,1600

瓦里安3800系列

布鲁克PE580,590,680,690

磐诺A90，福立GC9790，华爱，天瑞，天美，GC7900，川仪，北分瑞利，东西电子，鲁南瑞虹，捷岛/科晓


 

Maleic anhydride, as an impurity, is mainly generated in the production process of phthalic anhydride. The key to control lies in optimizing process conditions, suppressing their generation or promoting their conversion/removal.
Main source: MA is an important intermediate or byproduct in the process of producing PA through the oxidation of naphthalene or ortho xylene. Improper control can lead to excessive residual MA in the product.
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. uses gas chromatography to separate organic impurities in phthalic anhydride, detects them using a hydrogen flame ionization detector, and quantitatively analyzes them using peak area external standard method. The accuracy, precision, and detection limit data of the method were evaluated.
Name: Capillary Column
Model: HH-1701
Specification: 30m * 0.25mm * 0.25um
Temperature: 280 ° C
Application: SNT 4373-2015 Determination of maleic anhydride in phthalic anhydride Gas chromatography method
Application:
Agilent 490 online/portable, 48905890689088608890
Shimadzu GC-14C, GC-2010, GC-2014, GC-2030
Thermo Fisher Scientific 1310130016101600
Varian 3800 Series
Brooke PE580590680690
Panno A90, Fuli GC9790, Huaai, Tianrui, Tianmei, GC7900， Chuanyi, Beifen Ruili, Dongxi Electronics, Lunan Ruihong, Jiedao/Kexiao