Description

3-Amino-5-Sulfobenzoic Acid is a multifunctional aromatic compound featuring both amino and sulfonic acid groups, making it a valuable intermediate in fine chemical synthesis. Its dual functionality allows for versatile chemical modifications, enabling the production of dyes, pigments, and advanced pharmaceutical agents. This high-purity intermediate is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking reliable building blocks for complex molecular architectures.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfa drugs and other therapeutic compounds.
• Dye and Pigment Manufacturing: Serves as a crucial intermediate for producing azo dyes, acid dyes, and other colorants due to its sulfonic acid group which enhances water solubility.
• Agrochemical Synthesis: Used in the production of herbicides, pesticides, and plant growth regulators where its aromatic structure provides a stable core for further functionalization.
• Chemical Research & Development: Employed as a building block in organic synthesis and material science for creating novel compounds with specific properties.
• Corrosion Inhibitor Formulation: Acts as a component in formulations designed to protect metals, leveraging its ability to chelate metal ions.
• Liquid Crystal and Polymer Additive: Utilized in the synthesis of specialty polymers and liquid crystal materials where its polar groups influence material properties.

Basic Information

Product Name	3-Amino-5-Sulfobenzoic Acid
CAS No.	5855-79-8
Molecular Formula	C7H7NO5S
Molecular Weight	217.20 g/mol
Synonyms	5-Sulfoanthranilic Acid; Benzoic acid, 3-amino-5-sulfo-; 3-Amino-5-sulfobenzoic acid; 5-Amino-3-sulfobenzoic acid; 3-Carboxy-5-sulfoaniline; 5-Sulfo-m-aminobenzoic acid; Anthranilic-5-sulfonic acid; 3-Amino-5-sulphobenzoic acid
EINECS	227-475-4

Quality Control

Our 3-Amino-5-Sulfobenzoic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for industrial and research applications. Certificates of Analysis (COA) documenting all critical parameters are provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

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

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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