3-ニトロベンゼンスルホン酸水和物

3-ニトロベンゼンスルホン酸水和物 化学特性,用途語,生産方法

外観

白色～うすい黄色粉末～結晶

化学的特性

Crystals. Soluble in water and alcohol.

使用

Organic synthesis. The sodium salt is a protective antireduction agent.

使用

3-Nitrobenzenesulfonic acid is used primarily as a mild oxidizing agent or as a precursor for colorant intermediates. In the former case it is used in processing certain anthraquinone intermediates (e.g., amination of anthraquinone-1-sulfonic acid to give 1- aminoanthraquinone) or as a dye-printing auxiliary to obtain resist effects with, for example, vat dyes. Reduction of 3-nitrobenzenesulfonic acid (usually as a liquor) to the important metanilic acid is achieved with iron or by catalytic hydrogenation. The alternative reduction with zinc and alkali or with sodium amalgam yields hydrazobenzene-3,3'-disulfonic acid, which rearranges to benzidine-2,2' - disulfonic acid [117-61-3] on treatment with acid.

調製方法

3-Nitrobenzenesulfonic acid is produced by dissolving nitrobenzene in 98 % sulfuric acid and heating to 80 ℃. Then 65 % oleum is added at this temperature, and the reaction is completed by heating for 9 h at 105 ℃ (higher temperatures are unsafe). After quenching the sulfonation mass in water, neutralizing with lime, and filtering off gypsum, the calcium salt of the product is converted to the sodium salt with sodium carbonate. After calcium carbonate has been removed by filtration, the sodium salt solution can be used directly or evaporated.

安全性プロファイル

A skin and severe eye irritant. Decomposes violently at about 200°. Mixture with sulfuric acid + sulfur trioxide may explode above 150°C. When heated to decomposition it emits toxic fumes of SOx and NOx. See also NITRO COMPOUNDS OF AROMATIC HYDROCARBONS and SULFONATES.

3-ニトロベンゼンスルホン酸水和物 上流と下流の製品情報

原材料

準備製品

98-47-5(3-ニトロベンゼンスルホン酸水和物)キーワード:

---

• 98-47-5
• Kyselina 3-nitrobenzensulfonova
• Kyselina nitrobenzen-m-sulfonova
• kyselina3-nitrobenzensulfonova
• kyselinanitrobenzen-m-sulfonova
• m-nitro-benzenesulfonicaci
• Benzene, 1-nitro-3-sulfonic acid
• META-NITROBENZENESULPHONICACID
• 3-NITROBENZENESULFONIC ACID HYDRATE
• 3-NITROBENZENESULFONIC ACID 95+%
• 1-Nitro-3-benzenesulfonic acid
• m-Nitrophenylsulfonic acid
• NSC 166284
• 3-Nitrobenzenesulfonic Acid 
• 3-NITROBENZENESULFONIC ACID
• M-NITROBENZENSULFONIC ACID
• 3-nitro-benzenesulfonicaci
• 3-nitrobenzenesulphonicacid
• 3-nitrophenylsulfonicacid
• Benzenesulfonic acid, 3-nitro-
• Benzenesulfonic acid, m-nitro-
• 3-NitrobenzenesulfonicAcidHydrate>
• M-NITROBENZENE SULFONIC ACID
• 3-ニトロベンゼンスルホン酸水和物
• 3-ニトロベンゼンスルホン酸
• m-ニトロベンゼンスルホン酸
• ニトロベンゼン-3-スルホン酸