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Study on the High-Purity Gallic Acid

ZHANG Wei,ZHANG Qiang,MA Fu bo,ZHU Jian guo (Guizhou Research Institute of Chemical Industry,Guiyang,550002)  
An analysis is made to fine out the impurities and their existing forms in the industrial gallic acid.According to the principles of separation and purfication,a treatment method of exchanging resin for ion is used to prepare high purity gallic acid for the microelectronic industrial purposes.The results show that each metal iron in the sample product is less than 0.1 mg/kg and its purity is over 99.5%.
【Fund】: 省科委基金黔基合计字 !(1 997) 30 82
【CateGory Index】: TQ91
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