5-Amino-2-methylbenzenesulfonic acid

Basic Information

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CAS Number

118-88-7

Molecular Formula

C7H9NO3S

Molecular Weight

187.22 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°C

Boiling Point

500°C (rough estimate)

Refractive Index

1.6100 (estimate)

SMILES

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CC1=C(C=C(C=C1)N)S(=O)(=O)O

InChI

InChI=1S/C7H9NO3S/c1-5-2-3-6(8)4-7(5)12(9,10)11/h2-4H,8H2,1H3,(H,9,10,11)

InChIKey

BRKFTWHPLMMNHF-UHFFFAOYSA-N

LogP

0.82392

Topological Polar Surface Area

80.39 Å²

Hydrogen Bond Donor/Acceptor

3 / 4

Complexity

244

Safety Information

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Hazard Statement

H227 Combustible liquid
Flammable liquids

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Hazard Class

Class 8 Class 8

Sensitiveness

Hygroscopic

Synonyms & References

English

p-Toluidine-o-sulfonic acid
5-amino-2-methylbenzene-1-sulfonic acid
EN300-95355
Q27278950
5-Amino-2-methylbenzenesulfonic acid
Benzenesulfonic acid, 5-amino-2-methyl-
AI3-23219
MFCD00007911
NS00008645
G90628U043
AS-12903
EINECS 204-282-8
Tox21_302265
5-AMINO-1-METHYLBENZENESULFONIC ACID
2-Methyl-5-amino benzene sulfonic acid
o-Toluenesulfonic acid, 5-amino-
1-amino-4-methylbenzene-3-sulfonic acid
DTXSID0044523
118-88-7
NSC-5586
EC 204-282-8
4-Amino-2-sulfotoluene
W-108532
4-methylaniline-3-sulfonic acid
DTXCID8024523
FT-0608018
4-Methyl-3-sulfoaniline
5-Amino-o-toluenesulfonic acid
NSC-22958
3-Amino-6-methylbenzenesulfonic acid
NSC5586

MDL Number

MFCD00007911

Customs Code

2921430090

FAQ

What is 5-Amino-2-methylbenzenesulfonic acid (CAS: 118-88-7)?

5-Amino-2-methylbenzenesulfonic acid (CAS: 118-88-7) is a chemical compound with the molecular formula C8H11NO3S. It is a white to off-white crystalline solid with a slight odor. This compound is soluble in water and has a pKa of 3.17.

What are the main uses of 5-Amino-2-methylbenzenesulfonic acid (CAS: 118-88-7)?

5-Amino-2-methylbenzenesulfonic acid (CAS: 118-88-7) is primarily used as an intermediate in the synthesis of pharmaceuticals and dyes. It is also used in research and as a reagent in analytical chemistry.

Is 5-Amino-2-methylbenzenesulfonic acid (CAS: 118-88-7) safe?

5-Amino-2-methylbenzenesulfonic acid (CAS: 118-88-7) is generally considered safe when handled with appropriate precautions. It is non-toxic but can cause skin irritation if direct contact occurs. Proper personal protective equipment, such as gloves and safety goggles, should be worn during handling.

How should 5-Amino-2-methylbenzenesulfonic acid (CAS: 118-88-7) be stored?

5-Amino-2-methylbenzenesulfonic acid (CAS: 118-88-7) should be stored in a cool, dry place, away from direct sunlight and heat sources. The storage container should be tightly sealed and kept in a well-ventilated area. It is recommended to store it at a temperature below 25°C and to avoid contact with moisture to prevent degradation.