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Koch acid

Koch acid ??? ???
?? ??:
117-42-0
???:
Koch acid
???(??):
2-Naphthyl;Kochaci;NSC 227195;Koch acid ISO 9001:2015 REACH;3,6,8-Trisulfo-1-naphthylamine;6-naphthalenetrisulfonic acid, 8-amino-3;8-amino-1,3,6-naphthalenetrisulfonic acid;1-Aminonaphthalene-3,6,8-trisulfonic acid;1,3,6-Naphthalenetrisulfonic acid,8-amino-;3,6-Naphthalenetrisulfonic acid, 8-amino-1
CBNumber:
CB8874779
???:
C10H9NO9S3
??? ??:
383.37
MOL ??:
117-42-0.mol

Koch acid ??

??
1.974
?? ?? (pKa)
-1.62±0.40(Predicted)
EPA
1,3,6-Naphthalenetrisulfonic acid, 8-amino- (117-42-0)

??

TSCA TSCA listed

Koch acid C??? ??, ??, ??

??? ??

1-Aminonaphthalene-3,6,8-trisulfonic acid [117-42-0]. (8-aminonaphthalene-1,3,6- trisulfonic acid), Koch acid, T acid, C10H9NO9S3, Mr 383.36, and its alkali-metal salts are readily soluble in water. The solutions are unusual for this class of compound in that they exhibit no fluorescence. Hydrolysis with dilute sulfuric acid produces 1-hydroxynaphthalene-3,6,8-trisulfonic acid, whereas diazotization followed by acid hydrolysis results in formation of the corresponding sultone. Reduction with zinc and alkali desulfonates 1-Aminonaphthalene-3,6,8-trisulfonic acid to give 1-amino-naphthalene-3,6-disulfonic acid. Amination gives 1,3-diaminonaphthalene-6,8- disulfonic acid.

Koch acid ?? ?? ? ???

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Koch acid ?? ??

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