Sulfanilic acid

CAS Number: 121-57-3

Molecular Formula: C6H7NO3S

Purity: Sulfanilic acid 99% purity

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About Sulfanilic acid

4-Aminobenzenesulfonic acid (CAS 121-57-3) is a vital building block in the North American API intermediates market, serving as a primary precursor for the synthesis of sulfonamide antibiotics where Pharma/API purity 99% is mandatory to satisfy stringent FDA quality benchmarks. p-Anilinesulfonic acid (CAS 121-57-3) has...

Synonyms

4-aminobenzenesulfonic acid
4-aminobenzenethiol
4-sulfanilic acid
4-sulfanilic acid, sodium salt
4-sulfanilic acid, zinc (2:1) salt

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Sulfanilic acid Specifications

CAS Number

121-57-3

Molecular Formula

C6H7NO3S

Molecular Weight

173.19 g/mol

IUPAC Name

4-aminobenzenesulfonic acid

Canonical SMILES

C1=CC(=CC=C1N)S(=O)(=O)O

InChI Key

HVBSAKJJOYLTQU-UHFFFAOYSA-N

InChI

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

EINECS Number

204-482-5

MDL Number

MFCD00007886

HSN No

29214222

CAS Number

121-57-3

Molecular Formula

C6H7NO3S

Molecular Weight

173.19 g/mol

IUPAC Name

4-aminobenzenesulfonic acid

Canonical SMILES

C1=CC(=CC=C1N)S(=O)(=O)O

InChI Key

HVBSAKJJOYLTQU-UHFFFAOYSA-N

InChI

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

EINECS Number

204-482-5

MDL Number

MFCD00007886

HSN No

29214222

melting_point

Decomposes without melting at 550 °F (NTP, 1992)

solubility

less than 1 mg/mL at 68 °F (NTP, 1992)

density

1.485 at 77 °F (NTP, 1992) - Denser than water; will sink

logP

log Kow = -2.16

Molecular Weight

173.19 g/mol

Purity

Sulfanilic acid 99% purity

Melting Point

288 °C (decomposes)

Boiling Point

288 °C

Freezing point

288°C

Precise Quality

121-57-3

PSA

88.8 Å²

Average mass

173.19 g/mol

Monoisotopic mass

173.01466426 Da

Molar mass

173.19 g/mol

Vapour pressure

2.02E-07 mm Hg at 25 °C

Precautionary Statement Codes

P261, P272, P280, P302+P352, P333+P313, P321, P363, and P501

Hazard Classes and Categories

Skin Sens. 1 (100%) Eye Irrit. 2 (89.5%)

Dye and Pigment Intermediate

A primary chemical building block utilized in the synthesis of diverse azo dyes, including methyl orange and Orange II, for applications in the textile, leather, and food industries