2-Toluenesulfonic acid

Basic Information

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CAS Number

88-20-0

Molecular Formula

C7H8O3S

Molecular Weight

172.2 g/mol

Chemical Classification

Basic Chemical Raw Materials Organic Chemicals Carboxylic Acids

Fine Chemicals Dyes and Pigments Organic Dyes

Basic Physical Properties

Melting Point

62-64°C

Boiling Point

272.52°C (rough estimate)

Density

1.3692 (rough estimate)

Refractive Index

1.5151 (estimate)

SMILES

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Cc1ccccc1S(=O)(=O)O

InChI

InChI=1S/C7H8O3S/c1-6-4-2-3-5-7(6)11(8,9)10/h2-5H,1H3,(H,8,9,10)

InChIKey

LBLYYCQCTBFVLH-UHFFFAOYSA-N

LogP

1.24172

Topological Polar Surface Area

54.370000000000005 Å²

Hydrogen Bond Donor/Acceptor

1 / 3

Complexity

214

Safety Information

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Hazard Statement

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

Synonyms & References

English

2-Methylbenzenesulfonic acid
2-Toluenesulfonic acid
Benzenesulfonic acid,2-methyl-
Toluene-2-sulfonic acid
2-methyl-benzenesulfonic acid
toluene-2-sulphonic acid
o-Toluenesulfonic acid
Benzenesulfonic acid, 2-methyl-
Toluene sulfonic acid
Toluenesulphonic acid
4ZHF5BMF7N
toluenesulfonicacid
O-TOLUENE SULFONIC ACID
toluensulfonic acid
o-Toluenesulfonicacid
toluene-sulfonic acid
toluene sulphonic acid
o-toluene-sulfonic acid
2-toluene-sulfonic acid
ortho-toluene sulfonic acid
NCIOpen2_001232
2-methylbenze
2-Methylbenzenesulfonic acid (ACI)
o-Toluenesulfonic acid (8CI)
2-Methylbenzensulfonic acid
NSC 87381
o-Methylbenzenesulfonic acid

MDL Number

MFCD00069442

Customs Code

2904100000

FAQ

What is 2-Toluenesulfonic acid (CAS: 88-20-0)?

2-Toluenesulfonic acid is an organic compound with the chemical formula C7H7SO3H. It is a monosulfonic acid derivative of toluene. This compound is commonly used as an analytical reagent and in organic synthesis.

What are the main uses of 2-Toluenesulfonic acid (CAS: 88-20-0)?

2-Toluenesulfonic acid is primarily used as a catalyst in various organic chemical reactions, particularly in the esterification of carboxylic acids. It is also employed in the production of pharmaceuticals and dyes, and as an analytical reagent for the determination of carboxylic acids.

Is 2-Toluenesulfonic acid (CAS: 88-20-0) safe?

2-Toluenesulfonic acid is generally safe when used under proper conditions. However, it is corrosive and may cause skin and eye irritation. Protective gloves and safety goggles should be worn when handling this compound. It is also important to avoid contact with heat sources and to ensure proper ventilation.

How should 2-Toluenesulfonic acid (CAS: 88-20-0) be stored?

2-Toluenesulfonic acid should be stored in a cool, dry place away from direct sunlight and heat sources. It should be kept in well-closed, acid-resistant containers to prevent contamination. Avoid exposure to moisture and maintain a temperature below 30°C to prevent decomposition.