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Title: High purity monochloroacetic acid and preparing process thereof
Application Number: 00102226 Application Date: 2000.02.15
Publication Number: 1309115 Publication Date: 2001.08.22
Approval Pub. Date: Granted Pub. Date: 2005.04.20
International Classification: C07C53/16,C07C51/29
Applicant(s) Name: Daicel Chemical Industry Co., Ltd.
Address:
Inventor(s) Name:
Attorney & Agent: wu xiaonan
Abstract
     A process for preparing high-purity monochloroacetic acid includes the monochloroacetic acid product containing dichloroacetic acid (10 ppm-2 wt.%) and acetic acid (0-5 wt.%) is hydrogenated at 100-188 deg.C and atomspheric pressure-100 KPa in the presence of catalyst composed of carrier (activated carbon or SiO2) and Pd (0.1-3 wt.%) several times. The content of dichloroacetic acid in its refined product is minimal.
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