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ChemicalBook CAS DataBase List 6-Amino-1-naphthalenesulfonic acid
81-05-0

6-Amino-1-naphthalenesulfonic acid synthesis

12synthesis methods
Tobias acid is added to a mixture of sulfuric acid and oleum, and the reaction is completed by stirring for 12 h at 25℃. The resulting sulfonation mass, containing mainly 2-aminonaphthalene-1,5-disulfonic acid, is poured into water and heated at 105℃ for 3 h to desulfonate and precipitate the product which, after cooling, is filtered off; the yield is 95 %.
-

Yield:-

Reaction Conditions:

with sulfuric acid at 70 - 80;

References:

Dahl & Co. DE29084, 1800, C [Fortschr. Teerfarbenfabr. Verw. Industriezweige,vol. 1,p. 422][Fortschr. Teerfarbenfabr. Verw. Industriezweige,vol. 1,p. 422]

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