Method for removing dinitro byproducts and purifying 2, 4-dichloronitrobenzene crude product

The invention discloses a method for removing dinitro byproducts and purifying a 2, 4-dichloronitrobenzene crude product, and relates to the technical field of dichloronitrobenzene production, and the method comprises the following steps: mixing the 2, 4-dichloronitrobenzene crude product with a sod...

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Bibliographic Details
Main Authors FAN JIXIA, LI XING, TIAN QIANG, LI YIMING, ZI HUIMIN, WAN BANGLONG, JIANG XINGZHI
Format Patent
LanguageChinese
English
Published 25.06.2024
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention discloses a method for removing dinitro byproducts and purifying a 2, 4-dichloronitrobenzene crude product, and relates to the technical field of dichloronitrobenzene production, and the method comprises the following steps: mixing the 2, 4-dichloronitrobenzene crude product with a sodium sulfide nonahydrate solution to carry out a reduction reaction, removing 1, 5-dichloro-2, 4-dinitrobenzene and 1, 3-dichloro-2, 4-dinitrobenzene contained in the 2, 4-dichloronitrobenzene, and purifying the 2, 4-dichloronitrobenzene crude product to obtain the 2, 4-dichloronitrobenzene crude product. A purified product is obtained; the 2, 4-dichloronitrobenzene crude product contains 1, 5-dichloro-2, 4-dinitrobenzene and 1, 3-dichloro-2, 4-dinitrobenzene, and the 2, 4-dichloronitrobenzene crude product contains 1, 5-dichloro-2, 4-dinitrobenzene and 1, 3-dichloro-2, 4-dinitrobenzene. After reduction by the method, the conversion rate of the 1, 5-dichloro-2, 4-dinitrobenzene and the 1, 3-dichloro-2, 4-dinitrobenz
Bibliography:Application Number: CN202410545482