Description

5-Amino-2-Methylbenzenesulfonic Acid is a versatile aromatic sulfonic acid derivative that serves as a critical intermediate in the synthesis of high-value chemical products. Its molecular structure, featuring both an amino and a sulfonic acid group, makes it a valuable building block for creating dyes, pigments, and other functional materials. This compound is essential for manufacturers in the fine chemical, agrochemical, and specialty dye industries seeking reliable and high-purity raw materials for their synthesis processes.

Application

• Dye and Pigment Intermediate: A key precursor in the manufacture of azo dyes, acid dyes, and reactive dyes, contributing to color strength and stability.
• Pharmaceutical Synthesis: Used as a building block in the production of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Production: Serves as an intermediate in the synthesis of herbicides, pesticides, and plant growth regulators.
• Corrosion Inhibitor Formulation: Employed in the development of specialty chemicals that protect metals in industrial systems.
• Photographic Chemical: Used in the production of certain photographic developers and chemicals.
• Research & Development: A valuable reagent in organic synthesis and chemical research for creating novel sulfonated compounds.

Basic Information

Product Name	5-Amino-2-Methylbenzenesulfonic Acid
CAS No.	118-88-7
Molecular Formula	C7H9NO3S
Molecular Weight	187.22 g/mol
Synonyms	2-Amino-4-methylbenzenesulfonic acid; 4-Methyl-2-aminobenzenesulfonic acid; 2-Methyl-5-aminobenzenesulfonic acid; 5-Amino-o-toluenesulfonic acid; 2-Amino-p-toluenesulfonic acid; 4-Methylaniline-2-sulfonic acid; 2-Methyl-5-sulfoaniline; 5-Amino-2-methylphenylsulfonic acid
EINECS	204-280-5

Quality Control

Our 5-Amino-2-Methylbenzenesulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing all test results. Our quality commitment ensures consistency and reliability for your critical synthesis applications.

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). Keep away from strong oxidizing agents and strong bases. The product is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
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.