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86-61-3

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86-61-3 Structure

86-61-3 Structure
IdentificationBack Directory
[Name]

7-amino-3-hydroxynaphthalene-1-sulphonic acid
[CAS]

86-61-3
[Synonyms]

7-Amino-3-hydroxy-1-naphthalenesulfonic acid
7-amino-3-hydroxynaphthalene-1-sulfonic acid
7-amino-3-hydroxynaphthalene-1-sulphonic acid
1-Naphthalenesulfonic acid, 7-amino-3-hydroxy-
[EINECS(EC#)]

201-686-6
[Molecular Formula]

C10H9NO4S
[MDL Number]

MFCD00760415
[MOL File]

86-61-3.mol
[Molecular Weight]

239.25
Chemical PropertiesBack Directory
[EPA Substance Registry System]

7-Amino-3-hydroxy-1-naphthalenesulfonic acid (86-61-3)
Safety DataBack Directory
[TSCA ]

TSCA listed
Hazard InformationBack Directory
[Synthesis]

6-Nitrodiazo-1,2,4-acid is heated with aqueous sodium sulfite solution in the presence of copper(II) sulfate. The solution is then acidified and heated further to cause desulfonation. The resulting nitrohydroxynaphthalenesulfonic acid is reduced with iron in the presence of acid. This process is preferred to the traditional deamination of compound 175 with ethanol in the presence of a copper catalyst.
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