Description

3-Amino-5-Methylbenzenesulfonic Acid is a versatile aromatic sulfonic acid derivative that serves as a critical intermediate in advanced organic synthesis. Its molecular structure, featuring both an amino and a sulfonic acid group, makes it a valuable building block for creating complex molecules with specific functional properties. This compound is essential for manufacturers in the dye, pharmaceutical, and agrochemical industries seeking to develop high-performance products. We supply this material to meet the stringent quality and reliability demands of global B2B markets.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes and other colorants, contributing to lightfastness and solubility.
• Pharmaceutical Synthesis: Used as a building block for active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Production: Employed in the manufacture of herbicides, fungicides, and other crop protection chemicals.
• Chemical Research & Development: Serves as a versatile reagent for organic synthesis and material science research.
• Corrosion Inhibitor Formulation: Used in specialty chemical formulations for metal surface treatment and protection.
• Polymer Modification: Acts as a functional monomer or additive to impart sulfonic acid groups into polymer chains.

Basic Information

Product Name	3-Amino-5-Methylbenzenesulfonic Acid
CAS No.	60310-04-5
Molecular Formula	C7H9NO3S
Molecular Weight	187.22 g/mol
Synonyms	5-Amino-m-toluenesulfonic Acid; 3-Amino-5-methylbenzenesulphonic Acid; 2-Methyl-5-aminobenzenesulfonic Acid; 5-Methyl-3-aminobenzenesulfonic Acid; Benzenesulfonic acid, 3-amino-5-methyl-; m-Toluenesulfonic acid, 5-amino-; 3-Amino-5-toluenesulfonic Acid
EINECS	Contact for details

Quality Control

Our 3-Amino-5-Methylbenzenesulfonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all relevant quality parameters. Our commitment to consistent quality and traceability supports your production 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). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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