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251917

Sulfanilic acid

ACS reagent grade, 99%, powder

Synonym(s):

4-Aminobenzenesulfonic acid, Aniline-4-sulfonic acid

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About This Item

Linear Formula:
4-(H2N)C6H4SO3H
CAS Number:
121-57-3
Molecular Weight:
173.19
NACRES:
NA.21
PubChem Substance ID:
24855168
UNSPSC Code:
12352100
EC Number:
204-482-5
MDL number:
MFCD00007886
Beilstein/REAXYS Number:
908765
Assay:
98.0-102.0% (ACS specification), 99%
Form:
powder
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Product Name

Sulfanilic acid, ACS reagent, 99%

grade

ACS reagent

Quality Segment

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%

functional group

sulfonic acid

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

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.

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Pictograms

Exclamation mark
GHS07

Signal Word

Warning

Hazard Codes

H315,H317,H319

Hazard Classifications

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

Storage Class

11 - Combustible Solids

WGK

WGK 1

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

PPE (personal protective equipment)

dust mask type N95 (US), Eyeshields, Faceshields, Gloves

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