Description

2-Amino-4-Sulfobenzoic Acid is a multifunctional aromatic compound featuring both amino and sulfonic acid groups, making it a valuable intermediate in fine chemical synthesis. Its unique structure provides excellent water solubility and reactivity, which is critical for producing high-performance dyes, pigments, and pharmaceutical agents. This product is essential for manufacturers in the agrochemical, dye, and pharmaceutical industries seeking reliable, high-purity building blocks for complex synthesis.

Application

• Dye and Pigment Intermediate: A key precursor for the synthesis of acid dyes, reactive dyes, and azo pigments, contributing to color fastness and brightness.
• Pharmaceutical Synthesis: Serves as a crucial building block in the production of certain sulfa drugs and other active pharmaceutical ingredients (APIs).
• Agrochemical Manufacturing: Used in the synthesis of herbicides and plant growth regulators due to its bioactive aromatic structure.
• Chemical Research & Development: Employed as a standard or reagent in organic synthesis and material science research.
• Corrosion Inhibitor Formulation: Acts as a component in specialty chemical formulations designed to protect metal surfaces.
• Photographic Chemical: Utilized in the production of certain light-sensitive chemicals for photographic applications.

Basic Information

Product Name	2-Amino-4-Sulfobenzoic Acid
CAS No.	98-43-1
Molecular Formula	C7H7NO5S
Molecular Weight	217.20 g/mol
Synonyms	4-Sulfoanthranilic Acid; 2-Amino-4-sulfobenzoic acid; 4-Amino-6-carboxybenzenesulfonic acid; 4-Sulfanthranilic Acid; Benzoic acid, 2-amino-4-sulfo-; 2-Carboxy-5-aminobenzenesulfonic acid; 4-Sulfo-2-aminobenzoic acid; 5-Amino-2-sulfobenzoic acid
EINECS	202-668-3

Quality Control

Our 2-Amino-4-Sulfobenzoic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for industrial and fine chemical applications. Certificates of Analysis (COA) documenting purity, assay, and impurity profiles are available upon request to support your quality assurance and regulatory compliance needs.

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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and handling properties.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Total impurities ≤ 2.0%

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