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218766

Sigma-Aldrich

4-Aminotoluene-3-sulfonic acid

99%

Synonym(s):

2-Amino-5-methylbenzenesulfonic acid, 4-Methylaniline-2-sulfonic acid

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About This Item

Linear Formula:
H2NC6H3(CH3)SO3H
CAS Number:
88-44-8
Molecular Weight:
187.22
Beilstein:
2211509
EC Number:
201-831-3
MDL number:
MFCD00007908
UNSPSC Code:
12352100
PubChem Substance ID:
24853086
NACRES:
NA.22

Assay

99%

form

solid

solubility

water: soluble 6 g/L at 20 °C

SMILES string

Cc1ccc(N)c(c1)S(O)(=O)=O

InChI

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

InChI key

LTPSRQRIPCVMKQ-UHFFFAOYSA-N

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General description

4-Aminotoluene-3-sulfonic acid acts as Schiff base ligand and forms binary and ternary complexes with Co(II), Ni(II), Cu(II) and Zn(II) ions.

Application

4-Aminotoluene-3-sulfonic acid was used to investigate the enrichment of aminobenzoic acids and aminotoluenesulfonic acids using graphitized carbon black (GCB) by solid-phase extraction. It was also used in the synthesis of azobenzene derivatives.

Legal Information

DuPont product

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Solid-phase extraction of aminobenzoic acids and aminotoluenesulfonic acids with graphitized carbon black.
Bohme C, et al.
Fresenius Journal of Analytical Chemistry, 360(7-8), 805-807 (1998)
Le Tkhi Khien et al.
Bioorganicheskaia khimiia, 35(5), 610-617 (2009-11-17)
Derivatives of azobenzene which contained a maleimide group in one of the benzene rings (for binding to a protein cysteine residue) and maleimide, hydroxyl, or carboxyl substitutes in another benzene ring were synthesized. The reactivity of these compounds towards a
Marianita Perez-Gonzalez et al.
Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment, 36(2), 212-224 (2019-01-31)
Pigment Red 57 (Colour Index No. 15850, PR57) and Pigment Red 57:1 (Colour Index No. 15850:1, PR57:1) are certifiable in the USA as the color additives D&C Red No. 6 (R6) and D&C Red No. 7 (R7) for use in
Abeer A Faheim et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 105, 109-124 (2013-01-09)
Salicylidene (4-aminotoluene-3-sulfonic acid) Schiff base ligand H(2)L, and its binary and ternary Co(II), Ni(II), Cu(II) and Zn(II) complexes using 8-hydroxyquinoline (8-HOqu) and 2-aminopyridine (2-Ampy) as secondary ligands have been synthesised and characterized via elemental analysis, spectral data (IR, (1)H NMR

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