Sulphanilic Acid

ALTERNATIVE NAMES
4-Aminobenzenesulfonic Acid, p-Aminobenzenesulfonic Acid.
TECHNICAL SPECIFICATIONS
CAS
121-57-3
EC
204-482-5
Food Code
-

Sulphanilic Acid is an essential aromatic amine sulfonic acid available as a high-purity Technical Grade or Purified off-white crystalline solid. It is a critical intermediate in the synthesis of Azo Dyes and various sulfonamide-based pharmaceutical products.

The compound is highly valued for its ability to undergo diazotization, a process essential for creating vibrant dyes and pigments used in the textile and food industries. Its high purity (>99%) ensures consistent quality in the production of optical brighteners and food-safe colorants.

In the medical field, it is used as a diagnostic reagent and as a building block for sulfonamides, a class of synthetic antimicrobial agents. Its stable zwitterionic structure provides high thermal stability, making it a reliable precursor for complex industrial organic chemistry.

Sulphanilic Acid

  • Dye Manufacture: Primary intermediate for the production of Acid Orange, Methyl Orange, and various other azo-based textile and food dyes.
  • Optical Brighteners: Used in the synthesis of fluorescent whitening agents for the paper and detergent industries to enhance product brightness.
  • Pharmaceuticals: Acts as a precursor for sulfa drugs and as a reagent in medical testing for the detection of nitrous acid or bilirubin.

Classified as Skin Sensitizer and Eye Irritant. May cause allergic reactions; wear Nitrile Gloves, Lab Coats, and Eye Protection. Handle in a Dust-Controlled Environment.

25 kg Woven Bags with PE liners and 500 kg Fiber Drums.

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