Sulfanilic acid, ACS, 98.0-102.0%
Sulfanilic acid, ACS, 98.0-102.0%
Sulfanilic acid, ACS, 98.0-102.0%
Thermo Scientific Chemicals

Sulfanilic acid, ACS, 98.0-102.0%

Reagent for chromatographic detection of histidine | CAS: 121-57-3 | C6H7NO3S | 173.186 g/mol
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250 g
Catalog number 041540.18
also known as 041540-18
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Quantity:
50 g
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Price (USD)
37.65
Special offer
Online exclusive
Ends: 28-Dec-2026
44.50
Save 6.85
Each
Chemical Identifiers
CAS121-57-3
IUPAC Name4-aminobenzene-1-sulfonic acid
Molecular FormulaC6H7NO3S
InChI KeyHVBSAKJJOYLTQU-UHFFFAOYSA-N
SMILESNC1=CC=C(C=C1)S(O)(=O)=O
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SpecificationsSpecification SheetSpecification Sheet
Sulfate content≤0.01%
Appearance (Color)White
FormSolid
Chloride content≤0.002%
Residue on ignition≤0.01%
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Sulfanilic acid is used as a reagent for chromatographic detection of histidine. It is also used as a chemical intermediate in organic synthesis. It is utilized in quantitative analysis of nitrate and nitrite ions. It plays an essential role in the manufacturing of azo dyes and in synthesis of sulfa drugs. It is used as a dopant for the chemical synthesis of polyaniline. It is used to prepare 2,4-diamino-6-p-sulphoanilinopyrimidine by reacting with 6-chloro-pyrimidine-2,4-diamine.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

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