Description

n-Salicylidenesulfanilic Acid is an organic chemical compound belonging to the class of Schiff bases, formed by the condensation of salicylaldehyde and sulfanilic acid. This compound is valued for its role as a versatile intermediate and analytical reagent, particularly in the synthesis of more complex organic molecules and in colorimetric detection methods. It is primarily utilized by manufacturers and research laboratories in the pharmaceutical, dye, and fine chemical industries.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and other bioactive compounds.
• Analytical Chemistry Reagent: Serves as a sensitive colorimetric reagent for the detection and quantification of metal ions, such as iron and aluminum, in various samples.
• Dye and Pigment Manufacturing: Acts as a key precursor in the production of azo dyes and other complex colorants.
• Chemical Research & Development: Employed as a building block in organic synthesis and materials science research.
• Chelating Agent: Functions as a ligand capable of forming stable complexes with transition metals.
• Corrosion Inhibitor Formulations: Investigated for use in protective coatings and industrial fluid additives.

Basic Information

Product Name	n-Salicylidenesulfanilic Acid
CAS No.	32835-41-9
Molecular Formula	C13H11NO4S
Molecular Weight	277.30 g/mol
Synonyms	Salicylidene-4-aminobenzenesulfonic Acid; 5-[(4-Sulfophenyl)iminomethyl]-2-hydroxybenzoic Acid?; 2-Hydroxy-5-[(4-sulfophenyl)iminomethyl]benzoic Acid; Benzoic acid, 2-hydroxy-5-[(4-sulfophenyl)iminomethyl]-; Schiff base of sulfanilic acid and salicylaldehyde; Sulfanilic acid salicylidene derivative; Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our n-Salicylidenesulfanilic Acid is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including identification, purity assay, and impurity profiling, to ensure it meets exacting specifications for research and industrial use. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and consistent quality.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.