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1-naphthylamine 4-sulfonate (1-naphthylamine-4-sulfonic acid sodium salt) , also known as 1-aminonaphthalene 4-sulfonate, molecular formula C 10 H .
1.
The anhydrous is carbonized without melting at 280~300℃
2.
1-Naphthylamine reacts with sulfuric acid to form a salt, and continues to react at 224°C under reduced pressure to form 1-naphthylamine-4-sulfonic acid, which is neutralized with soda ash to obtain sodium salt
3.
4.