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2-Amino-4-sulfobenzoic acid

2-Amino-4-sulfobenzoic acid Structure
2-Amino-4-sulfobenzoic acid structure
CAS No.
98-43-1
Chemical Name:
2-Amino-4-sulfobenzoic acid
Synonyms
4-SULFOANTHRANILIC ACID;4-Sulfo anthrailic acid;2-amino-4-sulfo-benzoicaci;2-AMINO-4-SULFOBENZOIC ACID;4-SULFO-2-AMINOBENZOIC ACID;2-amino-4-sulfonicbenzoicacid;2-azanyl-4-sulfo-benzoic acid;Benzoic acid, 2-amino-4-sulfo-;4-SULPHOANTHRANILICACID/BASACID;4-SULPHO ANTRALINIC ACID (S.A.B.A.)
CBNumber:
CB4242941
Molecular Formula:
C7H7NO5S
Molecular Weight:
217.2
MDL Number:
MFCD00035914
MOL File:
98-43-1.mol
MSDS File:
SDS
Last updated:2026-05-12 09:17:10
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2-Amino-4-sulfobenzoic acid Properties

Boiling point 360℃ at 97.5kPa
Density 1.709±0.06 g/cm3(Predicted)
vapor pressure 0-0Pa at 25℃
form Solid
pka -1.59±0.50(Predicted)
Dissociation constant 0.055-0.056 at 28℃
CAS DataBase Reference 98-43-1(CAS DataBase Reference)
FDA UNII 87T8B9176E
EPA Substance Registry System Benzoic acid, 2-amino-4-sulfo- (98-43-1)

SAFETY

Risk and Safety Statements

TSCA  TSCA listed
REACH Registrations Inactive

2-Amino-4-sulfobenzoic acid price More Price(10)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
aablocks AA005UYN 2-Amino-4-sulfobenzoic acid 97% 98-43-1 1g $1175 2026-05-28 Buy
Crysdot CD12000622 2-Amino-4-sulfobenzoic acid 95+% 98-43-1 1g $772 2026-05-27 Buy
Biosynth FA151108 2-Amino-4-sulfobenzoicacid 98-43-1 100mg $54 2021-12-16 Buy
Biosynth FA151108 2-Amino-4-sulfobenzoicacid 98-43-1 250mg $107.5 2021-12-16 Buy
Biosynth FA151108 2-Amino-4-sulfobenzoicacid 98-43-1 500mg $185 2021-12-16 Buy
Product number Packaging Price Buy
AA005UYN 1g $1175 Buy
CD12000622 1g $772 Buy
FA151108 100mg $54 Buy
FA151108 250mg $107.5 Buy
FA151108 500mg $185 Buy

2-Amino-4-sulfobenzoic acid Chemical Properties, Uses, Production

Application

2-Amino-4-sulfonic acid is a fine chemical that can be used to prepare dyes, pharmaceuticals, pesticides, etc.

Description

2-Amino-4-sulfobenzoic acid is freely soluble in hot water, less soluble in cold water. The compound is obtained at a moderate yield by treating 4-methyl-3-nitrobenzenesulfonic acid with sodium hydroxide solution. This acid is used mainly in the manufacture of diazoamino compounds of the R-N=N-NH-R' type. As mixtures with naphthols these compounds have acquired importance as printing inks (Rapidogen dyes).

Synthesis

The synthesis method of 2-amino-4-sulfobenzoic acid is as follows: dissolve o-nitrotoluene in pure sulfuric acid at 25-85C, then add 65% fuming sulfuric acid dropwise to carry out the sulfonation reaction, to obtain 2-nitro-4-sulfotoluene; then carry out an autoredox reaction of the above product 2-nitro-4-sulfotoluene under alkaline conditions to produce 2-amino-4-sulfobenzoic acid, the reaction is carried out at 60-130C. The synthesis method is as follows. The reaction was carried out at 60-130C.

2-Amino-4-sulfobenzoic acid Preparation Products And Raw materials

Raw materials

Preparation Products

Reactive Blue BRF Acid yellow 54 Reactive Violet 46

2-Amino-4-sulfobenzoic acid Suppliers

Global Suppliers ( 72)
Supplier Tel Email Country ProdList Advantage
Amadis Chemical Company Limited 571-89925085 sales@amadischem.com China 131885 58
Shanghai Witofly Chemical Co. ,Ltd. 02150630626 17717886015 sales@witofly.com China 1864 55
Aikon International Limited 025-66061636 19370895928 qqyang@aikonchem.com China 15810 58
Alfa Chemistry +1-5166625404; Info@alfa-chemistry.com United States 20000 58
Dideu Industries Group Limited +8617392712697 1022@dideu.com China 29089 58
Hefei TNJ Chemical Industry Co.,Ltd. +86-0551-65418671 +86-189 4982 3763 sales@tnjchem.com China 34526 58
Dayang Chem (Hangzhou) Co.,Ltd. +86-0571-88938639 17705817739 info@dycnchem.com China 52451 58
Chemwill Asia Co.,Ltd. 86-21-51086038 chemwill_asia@126.com CHINA 23861 58
Wuhan Yuqing Jiaheng Pharmaceutical Co., Ltd. 027-83855312 17771813295 13377865312 2668571332@qq.com China 7489 58
CONIER CHEM AND PHARMA LIMITED sales@conier.com China 49906 58
Supplier Advantage
Amadis Chemical Company Limited 58
Shanghai Witofly Chemical Co. ,Ltd. 55
Aikon International Limited 58
Alfa Chemistry 58
Dideu Industries Group Limited 58
Hefei TNJ Chemical Industry Co.,Ltd. 58
Dayang Chem (Hangzhou) Co.,Ltd. 58
Chemwill Asia Co.,Ltd. 58
Wuhan Yuqing Jiaheng Pharmaceutical Co., Ltd. 58
CONIER CHEM AND PHARMA LIMITED 58

View Latest Price from 2-Amino-4-sulfobenzoic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
2-Amino-4-sulfobenzoic acid pictures 2026-09-18 2-Amino-4-sulfobenzoic acid
98-43-1
 $10.00 1ASSAYS 99% 1 ton RongNa Biotechnology Co.,Ltd
2-Amino-4-sulfobenzoic acid pictures 2026-08-20 2-Amino-4-sulfobenzoic acid
98-43-1
 $1.10 1g 99.00% 100 Tons Min Dideu Industries Group Limited
2-Amino-4-sulfobenzoic acid pictures 2020-02-26 2-Amino-4-sulfobenzoic acid
98-43-1
 1KG 99.0%+ Shaanxi Dideu Medichem Co. Ltd

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4-SULFOANTHRANILIC ACID 4-SULFO-2-AMINOBENZOIC ACID 2-AMINO-4-SULFOBENZOIC ACID 2-amino-4-sulfo-benzoicaci 2-amino-4-sulfonicbenzoicacid 2-Amino-Benzoic Acid 4-Sulfonic Acid 4-SULPHO ANTRALINIC ACID (S.A.B.A.) BAS ACID (4 SULPHO ANTHRANILIC ACID) 2-Amino-4-sulfobenzene-carboxylic acid 4-SULPHOANTHRANILICACID/BASACID 2-azanyl-4-sulfo-benzoic acid 4-Sulfo anthrailic acid Benzoic acid, 2-amino-4-sulfo- 2-Amino-4-sulfobenzoic acid ISO 9001：2015 REACH 4 Sulhpo Anthranilic Acid ( Base Acid or 4SA) 4 SULFO ANTHRANILIC ACID (PURIFIED) 98-43-1