CAS 81-16-3: 2-Amino-1-naphthalenesulfonic acid

2-Aminonaphthalene-1-sulfonic acid

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.

2-Aminonaphthalene-1-sulfonic acid is a reactive chemical that is used in the treatment of wastewater. It reacts with methyl ketones and forms diazonium salts, which are then converted to chromatographic products. 2-Aminonaphthalene-1-sulfonic acid can be prepared by reacting sodium carbonate with a diazonium salt, hydrochloric acid, or an ammonium salt. The product is then treated with monosodium carbonate to form the monosodium salt of 2-aminonaphthalene-1-sulfonic acid. 2-Aminonaphthalene-1-sulfonic acid has been shown to have antibacterial properties against bacterial strains such as E. coli and Pseudomonas aeruginosa.

Applications 2-Amino-1-naphthalenesulfonic Acid has been used in the preparation of oligomeric acid azo dyes and yields a reddish orange color in the dye. References Shah, T.B., et. al.: Int. J. Polyemric Mater., 58, 681 (2009); Smith, K., et. al.: J. Environ., Res. Development, 2, 20 (2007)