Aniline-2-sulfonic acid synthesis
- Product Name:Aniline-2-sulfonic acid
- CAS Number:88-21-1
- Molecular formula:C6H7NO3S
- Molecular Weight:173.19
2,2'- Diamino-diphenyldisulfide can also be arrived at by alkaline hydrolysis of benzothiazole or mercaptobenzothiazole, followed by oxidation with hydrogen peroxide. The additional oxidation leading to 2-aminobenzenesulfonic acid can be performed in alkaline solution. Thus the synthesis starting from benzothiazole can be carried out exclusively in alkaline solution in a single reactor. Yield: 70%, based on benzothiazole.
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88-21-1
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Yield:88-21-1 99%
Reaction Conditions:
with sodium hydrogen sulfate;sulfuric acid at 200; for 19 h;Reagent/catalyst;Temperature;
Steps:
1 Synthesis of o- aminobenzenesulfonic acid
94 g of aniline,100 grams of concentrated sulfuric acid (concentration of 98% concentrated sulfuric acid)120 g of sodium bisulfate were added sequentiallyIn the dispenser,Dispersion for 1 hour,And then dispersed into a uniform material into the baking tray,Placed in a vacuum oven,Heated to 200 ° C,After 18 hours of incubation,The material was poured into 600 ml of water,And adding 1 gram of activated carbon,Heated to 80 ° C decolorization,After bleaching out liveCarbon,Stirring,Cooled to room temperature,crystallization,filter,168 g of a white solid was obtained,Content: 99%.
References:
Shenyang Chemical Research Institute Co., Ltd.;Yan, Shijie;Li, Fugang;Li, Wenxiao CN105481735, 2016, A Location in patent:Paragraph 0017; 0018; 0019; 0020
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88-21-1
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88-21-1
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88-21-1
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88-21-1
315 suppliers
$12.00/25g