ChemicalBook CAS DataBase List 3,5-Dinitro-2-methylbenzoic acid

3,5-Dinitro-2-methylbenzoic acid synthesis

9synthesis methods

Product Name:3,5-Dinitro-2-methylbenzoic acid
CAS Number:28169-46-2
Molecular formula:C8H6N2O6
Molecular Weight:226.14

118-90-1 Synthesis

118-90-1
500 suppliers
$13.00/1g

28169-46-2
147 suppliers
$20.69/25g

Yield:28169-46-2 96%

Reaction Conditions:

with sulfuric acid;nitric acid at 90; for 0.00833333 h;Large scale;Temperature;

Steps:

1-8 Example 8
Step 1: Weighing 10.0 kg of o-methylbenzoic acid in a stirred tank; Weighing 73.5kg of 98% sulfuric acid into the weighed o-methylbenzoic acid and mechanically stirring until it is completely dissolved and transferred to the first metering tank 1; Weighing 15.1 kg of 95%-98% nitric acid in the second metering tank 2; Step 2:The materials in the first metering tank 1 and the second metering tank 2 are simultaneously fed to the first mixer 8 through the corresponding first metering pump 5 and the second metering pump 6, respectively. The mixed mixture is introduced into the first tubular reactor 10,The first tubular reactor 10 has a diameter of 2 mm and a tube length of 5 m.The temperature of the first tubular reactor 10 is controlled by a heat exchange device at 90 ° C, The reaction solution stays in the first tubular reactor 10 for 0.5 min and then reaches the second mixer 9; Step 3: Weigh 250.0 kg of water in the third metering tank 3;The nitrifying liquid flows out of the first tubular reactor 10 and enters the second mixer 9, Turning on the third metering pump 7 to mix the water and the nitrifying liquid in the second mixer 9; The diluted nitrifying liquid enters the second tubular reactor 11,Maintaining the temperature of the second tubular reactor 11 at room temperature by a heat exchange device; Step 4: The reaction solution was allowed to stand in the second tubular reactor 11 for 0.05 min, and then entered from the second tubular reactor 11 into a liquid separation device. After filtration, the filter cake was washed with water and dried to obtain a white powdery solid.

References:

Zhejiang Glory Biological Technology Co., Ltd.;Zhejiang University of Technology;Yu Zhiqun;Wang Wenzuo;Su Weike;Chen Jianhua;Chen Rener CN106800512, 2019, B Location in patent:Paragraph 0039-0073; 0082; 0084-0085; 0089

FullText

1975-50-4 Synthesis