2-Aminobenzenesulfonic acid

Basic Information

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CAS Number

88-21-1

Molecular Formula

C6H7NO3S

Molecular Weight

173.19 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Basic Chemical Raw Materials Organic Chemicals Amines

Fine Chemicals Dyes and Pigments Organic Dyes

Basic Physical Properties

Melting Point

300 ºC

Boiling Point

363

Density

1.342 (estimate)

Flash Point

Refractive Index

1.5500 (estimate)

SMILES

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C1=CC=C(C(=C1)N)S(=O)(=O)O

InChI

InChI=1S/C6H7NO3S/c7-5-3-1-2-4-6(5)11(8,9)10/h1-4H,7H2,(H,8,9,10)

InChIKey

ZMCHBSMFKQYNKA-UHFFFAOYSA-N

LogP

0.5154999999999998

pKa

2.48(at 25℃)

Topological Polar Surface Area

80.39 Å²

Hydrogen Bond Donor/Acceptor

3 / 4

Complexity

219

Safety Information

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GHS Hazard Pictograms

H314

Hazard Statement

H314 Causes severe skin burns and eye damage
Skin corrosion/irritation

Hazard Class

Class 8 Class 8

Sensitiveness

Sensitive to air

Synonyms & References

English

o-Sulfanilic acid
AI3-52212
Aniline-2-sulfonate
ORTHANILIC ACID [MI]
Aniline-o-sulphonic acid
NSC147
2-Aminobenzenesulfonicacid
2-Aminobenzenesulfonic acid
Tox21_200956
88-21-1
Aniline-o-sulfonic acid
AKOS000299114
EN300-79575
SCHEMBL90023
CHEBI:1015
aminobenzenesulphonic acid
D71116
AC-11378
2-Sulfanilic acid
FT-0631415
Z1211373913
UNII-ZB9JSA4BH0
s6032
CHEMBL1372690
2-anilinesulfonic acid
aniline-2-sulphonic acid
DTXSID1024463
EINECS 201-810-9
1-aminobenzene-2-sulphonic acid
AM101461
1-Aminobenzene-2-sulfonic acid

MDL Number

MFCD00007705

Customs Code

2921420090

FAQ

What is 2-Aminobenzenesulfonic acid (CAS: 88-21-1)?

2-Aminobenzenesulfonic acid, with the CAS number 88-21-1, is an organic compound containing a sulfonic acid group and an amino group attached to a benzene ring. Its chemical formula is C6H7NO3S. It is a white crystalline solid that is soluble in water and commonly used in various chemical applications due to its reactivity and functional groups.

What are the main uses of 2-Aminobenzenesulfonic acid (CAS: 88-21-1)?

2-Aminobenzenesulfonic acid is widely used in the pharmaceutical industry for the synthesis of drugs, in the production of dyes and pigments, and as a precursor in the manufacture of organic compounds. It also finds applications in food industry as a flavor enhancer and in research for chemical reactions involving sulfonic acid functionalities.

Is 2-Aminobenzenesulfonic acid (CAS: 88-21-1) safe?

2-Aminobenzenesulfonic acid is generally considered safe when handled properly, but it may cause skin and eye irritation. It is important to follow safety protocols, such as using gloves and safety goggles, and to work in a well-ventilated area. Safety standards include compliance with OSHA and EPA guidelines for chemical exposure and disposal.

How should 2-Aminobenzenesulfonic acid (CAS: 88-21-1) be stored?

2-Aminobenzenesulfonic acid should be stored in a cool, dry place away from moisture and direct light. It is best kept in a sealed container made of glass or plastic to prevent contamination. Storage conditions should maintain a temperature below 25°C and humidity levels below 60% to ensure stability and prolong shelf life.