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251917

Sigma-Aldrich

Sulfanilic acid

ACS reagent, 99%

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
Beilstein:
908765
EC Number:
204-482-5
MDL number:
MFCD00007886
UNSPSC Code:
12352100
PubChem Substance ID:
24855168
NACRES:
NA.21

grade

ACS reagent

Quality Level

200

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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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
GHS07

Signal Word

Warning

Hazard Statements

H315,H317,H319

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

251917-25G:
251917-100G:
251917-BULK:
251917-500G:
251917-VAR:

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Certificates of Analysis (COA)

Lot/Batch Number
BCCK8777
BCCK7810
BCCG9491
BCCH0242
BCCJ5228

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o-ANISALDEHYDE
Sisti AJ
Organic Syntheses, 44, 4-4 (1964)
2,6-DICHLOROANILINE AND 2,6-DIBROMOANILINE
Seikel MK
Organic Syntheses, 24, 47-47 (1944)
1,2-AMINONAPHTHOL HYDROCHLORIDE
Conant JB, et al
Organic Syntheses, 17, 9-9 (1937)
Adsorption of essential micronutrients by carbon nanotubes and the implications for nanotoxicity testing.
Lin Guo et al.
Small (Weinheim an der Bergstrasse, Germany), 4(6), 721-727 (2008-05-28)
Han Ming Gan et al.
Chemosphere, 82(4), 507-513 (2010-11-26)
A co-culture consisting of Hydrogenophaga sp. PBC and Ralstonia sp. PBA, isolated from textile wastewater treatment plant could tolerate up to 100 mM 4-aminobenzenesulfonate (4-ABS) and utilize it as sole carbon, nitrogen and sulfur source under aerobic condition. The biodegradation
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