Description

4-Amino-2-Sulfobenzoic Acid is a versatile aromatic sulfonic acid derivative that serves as a critical building block in advanced organic synthesis. Its bifunctional nature, featuring both an amino and a sulfonic acid group, makes it an essential intermediate for creating complex molecules with specific properties. This compound is primarily sought after by manufacturers in the pharmaceutical, agrochemical, and specialty dye industries for the development of active ingredients and functional colorants.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfa drugs and other therapeutic agents.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators, leveraging its aromatic sulfonic acid structure.
• Dye and Pigment Manufacturing: Acts as an intermediate for azo dyes and other specialty colorants, providing solubility and chromophoric properties.
• Chemical Research & Development: Serves as a valuable reagent in organic chemistry labs for constructing complex molecular architectures.
• Ligand and Chelating Agent Precursor: Utilized in the development of specialized ligands for metal catalysis and chelation processes.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity or ion-exchange capacity.

Basic Information

Product Name	4-Amino-2-Sulfobenzoic Acid
CAS No.	527-76-4
Molecular Formula	C7H7NO5S
Molecular Weight	217.20 g/mol
Synonyms	2-Sulfo-4-aminobenzoic Acid; 4-Aminosalicylic Acid 2-Sulfonic Acid; Benzoic acid, 4-amino-2-sulfo-; 4-Amino-2-sulfobenzoic acid; 2-Carboxy-5-aminobenzenesulfonic Acid; 5-Amino-2-sulfobenzoic Acid; 4-Amino-2-sulphobenzoic Acid; ASBA
EINECS	208-417-5

Quality Control

Our 4-Amino-2-Sulfobenzoic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets the required specifications for identity, purity, and impurity profiles. A Certificate of Analysis (COA) detailing the results is provided with every shipment to guarantee traceability and compliance with your quality standards.

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). The product is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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