Description

2-Aminotoluene-5-Sulfonic Acid is a key aromatic sulfonic acid derivative, serving as a vital organic intermediate in advanced chemical synthesis. Its primary value lies in its bifunctional nature, containing both an amine and a sulfonic acid group, which makes it an essential building block for creating complex molecules. This compound is particularly sought after by manufacturers in the dyes and pigments, pharmaceutical, and agrochemical industries for the production of high-performance colorants and active ingredients.

Application

• Dye and Pigment Intermediate: A crucial precursor for the synthesis of azo dyes, acid dyes, and reactive dyes, providing color fastness and vibrancy.
• Pharmaceutical Synthesis: Used as a building block in the manufacture of various active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Production: Serves as an intermediate in the synthesis of herbicides, pesticides, and plant growth regulators.
• Chemical Research & Development: Employed in organic synthesis and as a standard or reagent in laboratory settings.
• Functional Material Production: Can be utilized in the creation of specialty polymers, corrosion inhibitors, and surfactants.

Basic Information

Product Name	2-Aminotoluene-5-Sulfonic Acid
CAS No.	98-33-9
Molecular Formula	C7H9NO3S
Molecular Weight	187.22 g/mol
Synonyms	4-Amino-3-methylbenzenesulfonic Acid; 3-Methyl-4-aminobenzenesulfonic Acid; 2-Methyl-5-aminobenzenesulfonic Acid; 5-Amino-o-toluenesulfonic Acid; 4-Amino-m-toluenesulfonic Acid; 2-Amino-5-methylbenzenesulfonic Acid; 5-Methyl-2-aminobenzenesulfonic Acid; Toluene-2-amino-5-sulfonic Acid
EINECS	202-657-1

Quality Control

Our 2-Aminotoluene-5-Sulfonic Acid is manufactured under a stringent quality management system. Each 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 critical quality attributes. 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). Keep away from strong acids, strong bases, and oxidizing agents. Due to its light-sensitive nature, containers should be opaque or stored in darkness.

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.