1-Naphthol-4-sulfonic acid CAS# 84-87-7
1-Naphthol-4-sulfonic acid CAS# 84-87-7 - 图片 2
1-Naphthol-4-sulfonic acid CAS# 84-87-7 - 图片 3
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1-Naphthol-4-sulfonic acid CAS# 84-87-7

Transparent flake crystal. soluble in water. 1-Hydroxynaphthalene- 4 -sulfonic acid [84-87-7]. (4-hydroxynaphthalene-1-sulfonic acid), Nevile and Winther’s acid, NW acid, C10H8O4S, Mr 224.23, and its salts are water soluble, but the sodium salt may be precipitated from solution by salting out. Coupling with diazo compounds takes place in the 2-position. Nitration yields 2,4-dinitro-1-naphthol, whereas nitrosation gives 2-nitroso-1-hydroxynaphthalene-4-sulfonic acid. Sulfonation leads to a mixture of 1-hydroxynaphthalene-2,4-di- and 2,4,7- trisulfonic acids.

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1-Naphthol-4-sulfonic acid CAS# 84-87-7

1-Naphthol-4-sulfonic acid Basic information
Product Name: 1-Naphthol-4-sulfonic acid
Synonyms: 1-Naphthalenesulfonicacid,4-hydroxy-;4-hydroxy-1-naphthalenesulfonicaci;4-hydroxynaphthalene-1-sulphonicacid;Nevileandwinther’sacid;N-(M-SULFOPHENYL) GAMMA ACID;4-Hydroxy-1-naphthalenesulfonic acid;1-NAPHTHOL-4-SULFONIC ACID;Nevile-Winthers acid
CAS: 84-87-7
MF: C10H8O4S
MW: 224.23
EINECS: 201-568-4
Product Categories: Intermediates of Dyes and Pigments
Mol File: 84-87-7.mol
1-Naphthol-4-sulfonic acid Structure
1-Naphthol-4-sulfonic acid Chemical Properties
Melting point 170℃
Boiling point 335.63°C (rough estimate)
density 1.4643 (rough estimate)
refractive index 1.7040 (estimate)
pka 0.73±0.40(Predicted)
form solid
form solid
color white to yellow
InChI InChI=1S/C10H8O4S/c11-9-5-6-10(15(12,13)14)8-4-2-1-3-7(8)9/h1-6,11H,(H,12,13,14)
InChIKey HGWQOFDAUWCQDA-UHFFFAOYSA-N
SMILES C1(S(O)(=O)=O)=C2C(C=CC=C2)=C(O)C=C1
CAS DataBase Reference 84-87-7(CAS DataBase Reference)
EPA Substance Registry System 1-Naphthalenesulfonic acid, 4-hydroxy- (84-87-7)

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