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Aniline-2-sulfonic acid

CAS No.
88-21-1
Chemical Name:
Aniline-2-sulfonic acid
Synonyms
o-Sulfanilic;Sulfoaniline;2-SULFOANILINE;Aniline-2-sulf;Orthoanilicacid;ORTHANILIC ACID;2-sulfanilicacid;SULPHANILIC ACID;O-SULFANILIC ACID;2-AminobenzenesuL
CBNumber:
CB1484656
Molecular Formula:
C6H7NO3S
Molecular Weight:
173.19
MDL Number:
MFCD00007705
MOL File:
88-21-1.mol
Last updated:2023-11-10 16:48:32

Aniline-2-sulfonic acid Properties

Melting point 300 °C
Boiling point 363.26℃[at 101 325 Pa]
Density 1.342 (estimate)
vapor pressure 0Pa at 25℃
refractive index 1.5500 (estimate)
storage temp. Keep in dark place,Inert atmosphere,Room temperature
solubility 3.565g/L in organic solvents at 20 ℃
form Crystalline Powder
pka 2.48(at 25℃)
color White to beige
Water Solubility sparingly soluble
Merck 14,6882
BRN 1309204
InChIKey ZMCHBSMFKQYNKA-UHFFFAOYSA-N
LogP 0 at 23℃
CAS DataBase Reference 88-21-1(CAS DataBase Reference)
EWG's Food Scores 1-2
FDA UNII ZB9JSA4BH0
NIST Chemistry Reference Aniline-o-sulfonic acid(88-21-1)
EPA Substance Registry System o-Aminobenzenesulfonic acid (88-21-1)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS05
Signal word  Danger
Hazard statements  H314
Precautionary statements  P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363
Hazard Codes  C
Risk Statements  34
Safety Statements  26-36/37/39-45-28A
RIDADR  UN 2585 8/PG 3
WGK Germany  3
RTECS  DB4727700
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  29214200
NFPA 704
0
3 0

Aniline-2-sulfonic acid price More Price(25)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich A86805 Aniline-2-sulfonic acid 95% 88-21-1 100g $38.76 2024-03-01 Buy
TCI Chemical A0266 2-Aminobenzenesulfonic Acid >99.0%(HPLC)(T) 88-21-1 25g $30 2024-03-01 Buy
TCI Chemical A0266 2-Aminobenzenesulfonic Acid >99.0%(HPLC)(T) 88-21-1 100g $84 2024-03-01 Buy
Alfa Aesar H31763 Orthanilic acid, 95% 88-21-1 100g $52.65 2024-03-01 Buy
TRC A622548 2-AminobenzenesulphonicAcid 88-21-1 10g $85 2021-12-16 Buy
Product number Packaging Price Buy
A86805 100g $38.76 Buy
A0266 25g $30 Buy
A0266 100g $84 Buy
H31763 100g $52.65 Buy
A622548 10g $85 Buy

Aniline-2-sulfonic acid Chemical Properties,Uses,Production

Chemical Properties

LIGHT BROWN FINE CRYSTALLINE POWDER

Definition

ChEBI: An aminobenzenesulfonic acid carrying an amino group at position 2.

Production Methods

2-Aminobenzenesulfonic acid (Aniline-2-sulfonic acid) is obtained from 2-nitrothiophenol by boiling in a mixture of dioxane and water (ratio 20:1) for seven hours; the yield is 86.7% of theory. The acid can also be produced as follows: 2-chloronitrobenzene is reacted with sodium disulfide in aqueous alcoholic solution to form 2,2'-dinitrodiphenyl disulfide. After having been dissolved in a mixture of hydrochloric acid and nitric acid this is oxidized with chlorine to form 2-nitrobenze- nesulfonyl chloride, which is then hydrolyzed with soda solution and finally reduced with iron turnings. Alternatively 2,2'-dinitrodiphenyl disulfide can first be reduced to 2,2'- diaminodiphenyl disulfide and then oxidized with hydrogen peroxide in aqueous sulfuric acid to 2-aminobenzenesulfonic acid.
2,2'- Diamino-diphenyldisulfide can also be arrived at by alkaline hydrolysis of benzothiazole or mercaptobenzothiazole, followed by oxidation with hydrogen peroxide. The additional oxidation leading to 2-aminobenzenesulfonic acid can be performed in alkaline solution. Thus the synthesis starting from benzothiazole can be carried out exclusively in alkaline solution in a single reactor. Yield: 70%, based on benzothiazole.

General Description

Light brown powder.

Air & Water Reactions

Soluble in water.

Reactivity Profile

Aniline-2-sulfonic acid is an amino acid. Reacts weakly with both acids and bases.

Fire Hazard

Flash point data for Aniline-2-sulfonic acid are not available, however Aniline-2-sulfonic acid is probably combustible.

Flammability and Explosibility

Non flammable

Purification Methods

Crystallise orthanilic acis from aqueous solution, containing 20mL of conc HCl per L, then crystallise it from distilled water, and dry it in a vacuum desiccator over Sicapent (m 315o). When an aqueous solution is chilled below 13.5o, the hydrated form of the acid is obtained. It is used for the determination of nitrite and nitrate. The S-benzylisothiuronium salt has m 137o (from H2O). [Wertheim Org Synth Coll Vol II 471 1943, Beilstein 14 H 681, 14 I 714, 14 II 429, 14 III 1896, 14 IV 2638.]

62-53-3
88-21-1
Synthesis of Aniline-2-sulfonic acid from Aniline
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View Lastest Price from Aniline-2-sulfonic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Aniline-2-sulfonic acid pictures 2023-11-11 Aniline-2-sulfonic acid
88-21-1
US $0.00 / KG 1KG 99% 50000KG/month Hebei Mojin Biotechnology Co., Ltd
Aniline-2-sulfonic acid pictures 2023-09-06 Aniline-2-sulfonic acid
88-21-1
US $0.00 / KG 1KG 99% 500000kg Hebei Guanlang Biotechnology Co., Ltd.
Aniline-2-sulfonic acid  pictures 2022-08-27 Aniline-2-sulfonic acid
88-21-1
US $1.10 / g 1g 99.00% 100 Tons Min Dideu Industries Group Limited
2-SULFOANILINE 2-AMINOBENZENESULFONIC ACID ANILINE-2-SULFONIC ACID ANILINE-O-SULFONIC ACID 2-aminobenzenesulphonic acid ORTHO AMINO PHENOL SULPHONIC ORTHANILIC ACID (2-AMINOBENZENESULFONIC ACID) Aniline-2-sulfonic acid, tech., 83% 1-Aminobenzene-2-sulfonic acid 2-amino-benzenesulfonicaci 2-sulfanilicacid Aniline-o-sulphonic acid Anilino-2-sulfonic acid anilino-2-sulfonicacid Anilino-o-sulfonic acid anilino-o-sulfonicacid Anilino-o-sulphonic acid anilino-o-sulphonicacid Benzenesulfonic acid, 2-amino- Benzenesulfonic acid, o-amino- o-amino-benzenesulfonicaci o-Aminophenylsulfonic acid o-aminophenylsulfonicacid Orthoanilicacid o-Sulfanilic Sulfoaniline ORTHO-AMINOBENZENESULPHONICACID 2-AMINOBENZENESULPHONIC ACID / ORTHANILIC ACID ORTHANILIC ACID (ANILINE-2-SULFONIC ACID) 2-Aminobenzenesulfonic acid, o-Sulfanilic acid, Orthanilic acid 2-Aminobenzenesulfonic acid, o-Sulfanilic acid 2-Anilinesulfonic acid Aniline-2-sulfonic acid,95% Aniline-2-sulfonic acid,83%,tech. Aniline-2-sulfonic a o-Anilinesulfonic Acid Orthanilic Acid 2-Sulfoaniline 2-Sulphoaniline, o-Sulphanilic acid, Orthanilic acid Aniline-2-sulf Aniline-2-sulfonic acid 95% SULPHANILIC ACID O-SULFANILIC ACID ORTHANILIC ACID O-ANILINESULFONIC ACID O-AMINOBENZENESULFONIC ACID 2-Sulfoaniline o-Anilinesulfonic Acid Orthanilic Acid 2-amino-1-benzenesulfonic acid 2-aminobenzenesulfonate 2-AminobenzenesuL Aniline-2-sulfonic acid CAS 88-21-1 manufacturer 2-Aminobenzenesulfonic acid, 99%, for synthesis 2-AminobenzenesulfonicAcid> Aniline-2-sulfonic acid ISO 9001:2015 REACH Mesalazine EP Impurity OQ: What is Mesalazine EP Impurity O Q: What is the CAS Number of Mesalazine EP Impurity O Q: What is the storage condition of Mesalazine EP Impurity O Q: What are the applications of Mesalazine EP Impurity O 2-Aminobenzenesulfonic acid Orthanilic acid 2-aminobenzenesulphonic acid Sulfadimethoxine Impurity 10 88-21-1 Sulfonic/Sulfinic Acids Organic Building Blocks