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4-?????????-1,5-????

4-?????????-1,5-???? ??? ???

?? ??:: 117-56-6

???:: 4-?????????-1,5-????

???(??):: 4-?????????-1,5-????

???:: 4-hydroxynaphthalene-1,5-disulphonic acid

???(??):: Schoellkopf's acid;α-Naphtholdisulfonic acid S;1-naphthol-4,8-disulfonic acid;8-Hydroxy-1,5-naphthalenedisulfonic acid;4-hydroxynaphthalene-1,5-disulfonic acid;4-Hydroxy-1,5-naphthalenedisulfonic acid;4-hydroxynaphthalene-1,5-disulphonic acid;1,5-Naphthalenedisulfonic acid, 4-hydroxy-

CBNumber:: CB9929654

???:: C10H8O7S2

??? ??:: 304.3

MOL ??:: 117-56-6.mol

?? ?? 5

4-?????????-1,5-???? ??

??: 1.816±0.06 g/cm3(Predicted)

?? ?? (pKa): -0.42±0.40(Predicted)

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1-Hydroxynaphthalene-4,8-disulfonic acid [117-56-6]. (4-hydroxynaphthalene-1,5- disulfonicacid),Schollkopf ’s acid, deltaacid, oxy Chicago acid, C10H8O7S2, Mr 304.3: the sodium saltis readily solubleinwater, butthe barium saltis only sparingly soluble.Cold5 % oleumdehydrates 1-Hydroxynaphthalene-4,8-disulfonic acid to the sultone, whereas with hot 25 % oleum it undergoes sulfonation to give 1-hydroxynaphthalene-2,4,8-trisulfonic acid. Amination (Bucherer) gives 1-aminonaphthalene-4,8-disulfonic acid and caustic fusion gives 1,8-dihydroxynaphthalene-4-sulfonic acid. Diazo coupling and nitrosation take place in the 2-position.

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