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251917

Sigma-Aldrich

Sulfanilic acid

ACS reagent, 99%

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Synonym(s):
4-Aminobenzenesulfonic acid, Aniline-4-sulfonic acid
Linear Formula:
4-(H2N)C6H4SO3H
CAS Number:
Molecular Weight:
173.19
Beilstein:
908765
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

Assay

98.0-102.0% (ACS specification)
99%

form

powder

ign. residue

≤0.01%

mp

>300 °C (lit.)

anion traces

chloride (Cl-): ≤0.002%
nitrite (NO2-): ≤0.5 ppm
sulfate (SO42-): ≤0.01%

SMILES string

Nc1ccc(cc1)S(O)(=O)=O

InChI

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

InChI key

HVBSAKJJOYLTQU-UHFFFAOYSA-N

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This Item
86090PHR14191.00686
Sulfanilic acid ACS reagent, 99%

Sigma-Aldrich

251917

Sulfanilic acid

Sulfanilic acid puriss. p.a., ≥99.0% (T)

Sigma-Aldrich

86090

Sulfanilic acid

Sulfanilic Acid Pharmaceutical Secondary Standard; Certified Reference Material

Supelco

PHR1419

Sulfanilic Acid

Sulfanilic acid GR for analysis ACS,Reag. Ph Eur

Supelco

1.00686

Sulfanilic acid

form

powder

form

powder or crystals

form

-

form

solid

mp

>300 °C (lit.)

mp

>300 °C (lit.)

mp

>300 °C (lit.)

mp

288 °C (decomposes)

Quality Level

200

Quality Level

200

Quality Level

300

Quality Level

100

grade

ACS reagent

grade

-

grade

certified reference material, pharmaceutical secondary standard

grade

ACS reagent

ign. residue

≤0.01%

ign. residue

≤0.01% (as SO4)

ign. residue

-

ign. residue

-

Application

The diazonium salt of sulfanilic acid may be used in the preparation of azo dyes such as o-anisaldehyde, orange I and orange II. It may also be used in the preparation of 2,6-dibromoaniline via bromination followed by desulfonation.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1

Storage Class Code

13 - Non 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

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Kinetic, mechanistic and spectral studies for the oxidation of sulfanilic acid by alkaline hexacyanoferrate (III).
Farokhi SA and Nandibewoor ST.
Tetrahedron, 59(38), 7595-7602 (2003)

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