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ChemicalBook CAS DataBase List Pyromellitic acid
89-05-4

Pyromellitic acid synthesis

12synthesis methods
-

Yield:89-05-4 96.6%

Reaction Conditions:

with water for 4 h;Reflux;

Steps:

2
(1) 34.3 g of commercially available pyromellitic dianhydride (GC analysis purity: 98.2%) and 250 mL of deionized water was charged into 500 mL and the reaction was heated to reflux for 4h.after cooling the reaction to room temperature, filtrated , then the filter cake was subjected to decolourization and purification using deionized water and activated carbon and then obtained 38.5g of white solid hydrogenated pyromellitic acid, the yield was 96.6%, GC analysis was 98.50%.

References:

Changzhou Sunshine Pharmaceutical Co., Ltd.;Hu Guoyi;Wu Jianhua;Min Xuefeng;Zhou Guoping CN103992330, 2016, B Location in patent:Page/Page column 5-7

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