1-Naphthol-4-sulfonic acid

1-Naphthol-4-sulfonic acid
  • CAS No.:84-87-7

Important Notice

  1. This product is a chemical product/pharmaceutical intermediate. It is not a drug, an active pharmaceutical ingredient (API), or a pharmaceutical-grade material. It has not been granted a drug approval number or a Chemical Drug Substance Approval Notice, has not passed drug-related review and approval, and is not manufactured, tested, or released in accordance with pharmaceutical GMP.
  2. This product is intended solely for non-clinical research, process development, quality studies, further chemical processing, or chemical synthesis. It must not be used in drug-product manufacturing, clinical trials, clinical diagnosis, or administration to humans or animals, or be sold, used as an input, submitted for regulatory filing, or released as an API or pharmaceutical material.
  3. The purchaser must not use this product, or supply it to another party, for personal consumption, sports or fitness, weight loss, health supplements, food, or animal feed.
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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 Chemical Properties
Melting point 170℃
Boiling point 335.63°C (rough estimate)
density 1.4643 (rough estimate)
refractive index 1.7040 (estimate)
pka0.73±0.40(Predicted)
form solid
form solid
color white to yellow
CAS DataBase Reference84-87-7(CAS DataBase Reference)
EPA Substance Registry System1-Naphthalenesulfonic acid, 4-hydroxy- (84-87-7)
Safety Information
MSDS Information
ProviderLanguage
4-Hydroxy-1-naphthalenesulfonic acid English
1-Naphthol-4-sulfonic acid Usage And Synthesis
PreparationAfter drying under vacuum, the resulting filter cake contains 1-naphthol-4-sulphonic acid in a yield of 92% of theory and <0.5% 1-naphthol-2-sulphonic acid and 3% of 1-naphthol-2,4-disulphonic acid based on the weight of 1-naphthol-4-sulphonic acid.
1-Naphthol-4-sulfonic acid Preparation Products And Raw materials
Raw materialsSodium bisulfite-->Naphthionic acid
Preparation Productsdisodium 3-[[4'-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-1-sulphonate-->C.I. 14720-->Direct Blue 151-->disodium 3-[[4'-[[6-amino-1-hydroxy-3-sulphonato-2-naphthyl]azo]-3,3'-dimethoxy[1,1'-biphenyl]-4-yl]azo]-4-hydroxynaphthalene-1-sulphonate-->sodium 3-[[4-(benzoylethylamino)-2-methylphenyl]azo]-4-hydroxynaphthalene-1-sulphonate-->sodium 4-hydroxy-3-[[3-(phenylsulphamoyl)-p-tolyl]azo]naphthalenesulphonate-->3-[(5-Chloro-2-hydroxy-3-sulfophenyl)azo]-4-hydroxy-1-naphthalenesulfonic acid disodium salt-->5-Amino-4-hydroxy-3-[[4'-[(1-hydroxy-4-sulfonaphthalen-2-yl)azo]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]azo]-2,7-naphthalenedisulfonic acid trisodium salt-->Acid Red 374-->4,4'-[(2-Methyl-5-sodiosulfo-1,3-phenylene)bis[azo(4,6-diamino-3,1-phenylene)azo]]bis[naphthalene-1-sulfonic acid sodium] salt-->BENZOAZURINE-->BRILLIANT PURPURIN R-->THIAZINE RED-->Acid Violet 131-->NAPHTHALENE SCARLET B-->Aluminium, 7-hydroxy-8-[(4-sulfo-1-naphthalenyl)azo]-1,3-naphthalenedisulfonic acid complex-->Mordant Violet 2-->DIRECTVIOLET32-->disodium (3Z)-3-[[4-(4-anilino-3-sulfonato-phenyl)diazenylnaphthalen-1-yl]hydrazinylidene]-4-oxo-naphthalene-1-sulfonate-->3-[[2-[(N-Ethyl-N-phenylamino)sulfonyl]phenyl]azo]-4-hydroxy-1-naphthalenesulfonic acid sodium salt-->6-Amino-4-hydroxy-5-[[4'-[(1-hydroxy-4-sodiosulfo-2-naphthalenyl)azo]-1,1'-biphenyl-4-yl]azo]naphthalene-2-sulfonic acid sodium salt-->OXAMINE BLUE 4R

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