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5-Amino-1-naphthol-3-sulfonic acid

5-Amino-1-naphthol-3-sulfonic acid Structure
5-Amino-1-naphthol-3-sulfonic acid structure
CAS No.
489-78-1
Chemical Name:
5-Amino-1-naphthol-3-sulfonic acid
Synonyms
M ACID;1-AMINO-5-NAPHTHOL-7-SULFONIC ACID;5-Amino-1-naphthol-3-sulfonic acid;5-AMino-1-naphthol-3-sulfonic Acid 5-AMINO-1-NAPHTHOL-3-SULFONIC ACID 97+%;5-AMINO-1-NAPHTHOL-3-SULFONIC ACID HYDRATE;8-AMINO-4-HYDROXY-2-NAPHTHALENESULFONIC ACID;8-amino-4-hydroxynaphthalene-2-sulfonic acid;8-amino-4-hydroxynaphthalene-2-sulphonic acid;5-Amino-1-naphthol-3-sulfonic Acid Hydrate>
CBNumber:
CB4765620
Molecular Formula:
C10H9NO4S
Molecular Weight:
239.25
MDL Number:
MFCD00035712
MOL File:
489-78-1.mol
MSDS File:
SDS
Last updated:2026-09-12 18:52:58
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5-Amino-1-naphthol-3-sulfonic acid Properties

Density 1.627±0.06 g/cm3(Predicted)
pka -0.35±0.40(Predicted)
form powder to crystal
color White to Amber to Dark purple
CAS DataBase Reference 489-78-1(CAS DataBase Reference)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H315-H319
Precautionary statements  P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313
Risk Statements  36/37/38
Safety Statements  26-36/37/39
HS Code  2930909899
NFPA 704
0
3 0

5-Amino-1-naphthol-3-sulfonic acid price More Price(17)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TCI Chemical A0368 5-Amino-1-naphthol-3-sulfonic Acid Hydrate >97.0%(T) 489-78-1 25g $26 2026-04-30 Buy
TCI Chemical A0368 5-Amino-1-naphthol-3-sulfonic Acid Hydrate >97.0%(T) 489-78-1 500g $214 2026-04-30 Buy
Apolloscientific OR932641 5-Amino-1-naphthol-3-sulfonic acid hydrate 98% 489-78-1 1g $21 2026-06-04 Buy
Apolloscientific OR932641 5-Amino-1-naphthol-3-sulfonic acid hydrate 98% 489-78-1 5g $37 2026-06-04 Buy
Apolloscientific OR932641 5-Amino-1-naphthol-3-sulfonic acid hydrate 98% 489-78-1 25g $90 2026-06-04 Buy
Product number Packaging Price Buy
A0368 25g $26 Buy
A0368 500g $214 Buy
OR932641 1g $21 Buy
OR932641 5g $37 Buy
OR932641 25g $90 Buy

5-Amino-1-naphthol-3-sulfonic acid Chemical Properties, Uses, Production

Chemical Properties

1-Amino-5-hydroxynaphthalene-7-sulfonic acid [489-78-1].  (8-amino-4-hydroxynaphthalene-2-sulfonic acid), M acid, C10H9NO4S, Mr 239.2, and its sodium salt are sparingly soluble in water. Coupling with diazo compounds takes place under acidic and alkaline conditions, but a bisazo derivative cannot be obtained. Reaction with bisulfite gives 4,8-dihydroxynaphthalene-2-sulfonic acid.

Production Methods

1-Aminonaphthalene-5,7-disulfonic acid is heated with concentrated sodium hydroxide for 16 h at 172 – 176℃. After the reaction mixture is quenched, acidified, and purged of sulfur dioxide, the product is isolated in 80 % yield.

5-Amino-1-naphthol-3-sulfonic acid Preparation Products And Raw materials

Raw materials

Preparation Products

1-Naphthalenesulfonic acid, 6-[[4-[[6-[(4-aminobenzoyl)amino]-1-hydroxy-3-sulfo-2-naphthalenyl]azo]-8-hydroxy-6-sulfo-1-naphthalenyl]azo]-, trisodium salt Mordant Black 74 C.I. Direct Black 96 1-Naphthalenesulfonic acid, 4-amino-6-[2-[4'-[2-(5-amino-1-hydroxy-3-sulfo-2-naphthalenyl)diazenyl]-3,3'-dimethyl[1,1'-biphenyl]-4-yl]diazenyl]-5-hydroxy-, sodium salt (1:2) Oxamine blue B

5-Amino-1-naphthol-3-sulfonic acid Suppliers

Global Suppliers ( 61)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
TCI (Shanghai) Development Co., Ltd. 021-67121386 Sales-CN@TCIchemicals.com China 24512 81
Energy Chemical 400-0056266 sales8178@energy-chemical.com China 44850 61
Maya High Purity Chemicals +86 (573) 82222445 (0)18006601000 452520369 sales@maya-r.com China 11693 57
Jiangsu Aikon Biopharmaceutical R&D co.,Ltd. 025-66113011 13913916777 cfzhang@aikonchem.com China 19902 55
TOKYO CHEMICAL INDUSTRY CO., LTD. 03-36680489 Sales-JP@TCIchemicals.com Japan 28364 80
TCI Europe 320-37350700 sales@tcieurope.eu Europe 23654 75
TCI AMERICA 800-4238616 sales@tciamerica.com Americas 23636 75
9ding chemical ( Shanghai) Limited 4009209199 sales@9dingchem.com China 22497 55
Shanghai Aladdin Bio-Chem Technology Co.,LTD 400-6206333 13167063860 anhua.mao@aladdin-e.com China 29985 65
Supplier Advantage
J & K SCIENTIFIC LTD. 76
TCI (Shanghai) Development Co., Ltd. 81
Energy Chemical 61
Maya High Purity Chemicals 57
Jiangsu Aikon Biopharmaceutical R&D co.,Ltd. 55
TOKYO CHEMICAL INDUSTRY CO., LTD. 80
TCI Europe 75
TCI AMERICA 75
9ding chemical ( Shanghai) Limited 55
Shanghai Aladdin Bio-Chem Technology Co.,LTD 65

View Latest Price from 5-Amino-1-naphthol-3-sulfonic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
5-AMINO-1-NAPHTHOL-3-SULFONIC ACID pictures 2026-08-20 5-AMINO-1-NAPHTHOL-3-SULFONIC ACID
489-78-1
 $1.10 1g 99.00% 100 Tons Min Dideu Industries Group Limited
5-Amino-1-naphthol-3-sulfonic Acid Hydrate pictures 2020-02-26 5-Amino-1-naphthol-3-sulfonic Acid Hydrate
489-78-1
 1KG 99.0%+ 100 tons Shaanxi Dideu Medichem Co. Ltd
5-Amino-1-naphthol-3-sulfonic Acid pictures 2020-02-02 5-Amino-1-naphthol-3-sulfonic Acid
489-78-1
 $1.00 1KG Min98%HPLC Career Henan Chemical Co

5-Amino-1-naphthol-3-sulfonic acid Spectrum

5-AMINO-1-NAPHTHOL-3-SULFONIC ACID(489-78-1)1HNMR5-AMINO-1-NAPHTHOL-3-SULFONIC ACID(489-78-1)13CNMR5-AMINO-1-NAPHTHOL-3-SULFONIC ACID(489-78-1)IR15-AMINO-1-NAPHTHOL-3-SULFONIC ACID(489-78-1)IR2

489-78-1 (5-Amino-1-naphthol-3-sulfonic acid) Related Search:

7-(Acetylamino)-4-hydroxy-2-naphthalenesulfonic acid 1-amino-2-naphthol-4-sulfonic acid monosodium salt N-3-SULFOPHENYL-7-AMINO-1-NAPHTHOL-3-SULFONIC ACID 4-Hydroxy-7-methylamino-2-naphthalenesulfonic acid N-PHENYL-2-AMINO-8-NAPHTHOL-6-SULFONIC ACID,N-Phenyl-7-amino-1-naphthol-3-sulfonic acid
2-AMINO-8-NAPHTHOL-6-SULFONIC ACID,6-AMINO-4-NAPHTHOL-2-SULFONIC ACID,7-AMINO-1-NAPHTHOL-3-SULFONIC ACID N-Phenyl-γ-acid 1-Amino-2-naphthol-4-sulfonic acid 7-Anilino-4-hydroxy-2-naphthalenesulfonic acid 1-Naphthol
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N-acetyl-(1-amino-2-naphthol-6-sulfonic acid) 7-[N-methyl-N-(3-carboxy-4-hydroxyphenylfonyl)]amino-1-naphthol-3-sulfonic acid 6-chloro-1-amino-2-naphthol-4-sulfonic acid

1of4

1-AMINO-5-NAPHTHOL-7-SULFONIC ACID 8-AMINO-4-HYDROXY-2-NAPHTHALENESULFONIC ACID 8-amino-4-hydroxynaphthalene-2-sulphonic acid 8-amino-4-hydroxynaphthalene-2-sulfonic acid 8-azanyl-4-hydroxy-naphthalene-2-sulfonic acid 8-Amino-4-hydroxy-2-naphthalenesulfonic Acid M Acid 5-AMino-1-naphthol-3-sulfonic Acid  5-AMINO-1-NAPHTHOL-3-SULFONIC ACID HYDRATE 5-AMINO-1-NAPHTHOL-3-SULFONIC ACID 97+% 5-Amino-1-naphthol-3-sulfonic Acid Hydrate> 2-Naphthalenesulfonic acid, 8-amino-4-hydroxy- 5-AMINO-1-NAPHTHOL-3-SULFONIC ACID ISO 9001：2015 REACH M ACID 5-Amino-1-naphthol-3-sulfonic acid 489-78-1 C10H9NO4SxH2O Intermediates of Dyes and Pigments