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Product performance and production principle of 1-naphthylamine-6-sulfonic acid

 Last Update: 2021-09-05
 Source: Internet
 Author: User

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1-naphthylamine 6-sulfonic acid (1-naphthylamine-6-sulfonic acid) , also known as 1-amino-6-sulfonic acid, 1,6-Ke Liefu acid (1,6-Cleve's acid), 5- 5-amino-2-naphthalenesulfonic acid (5-amino-2-naphthalenesulfonic acid), molecular formula is C ₁₀ H ₉ NO ₃ S, molecular weight is 223.

White needle-like crystals or light gray crystals; hardly soluble in water, water solubility 1:1000 parts of water (16℃), almost insoluble in ethanol and ether , soluble in liquid caustic soda and ammonia; can be coupled with diazo compounds

Refined naphthalene is sulfonated and then nitrated with mixed acid to obtain a mixture of 1-nitronaphthalenesulfonic acid, which is neutralized with magnesium carbonate to obtain three isomer mixtures: 1-nitronaphthalene-6-magnesium sulfonate, 1-nitronaphthalene- Magnesium 7-sulfonate and magnesium 1-nitro-8-sulfonate

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