Description

2-(2-Methylanilino)-5-Aminobenzenesulfonic Acid is a key sulfonated aniline derivative, serving as a vital intermediate in the synthesis of complex organic molecules. Its primary commercial value lies in its bifunctional structure, containing both an amino and a sulfonic acid group, which makes it a versatile building block for dyes, pigments, and specialty chemicals. This compound is essential for manufacturers and R&D laboratories in the fine chemical, dye, and pharmaceutical intermediate sectors seeking high-purity synthetic precursors.

Application

• Primary Intermediate for Azo Dyes and Pigments: A crucial coupling component in the production of high-performance azo dyes, imparting color and stability to textiles, inks, and coatings.
• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and other complex drug molecules requiring sulfonated aniline structures.
• Research & Development Chemical: Serves as a specialized reagent in organic synthesis for academic and industrial research projects.
• Functional Material Synthesis: A building block for creating advanced materials, such as liquid crystals, optical brighteners, and corrosion inhibitors.
• Agrochemical Intermediate: Potential use in the synthesis of certain herbicides and pesticides that incorporate sulfonated aniline moieties.

Basic Information

Product Name	2-(2-Methylanilino)-5-Aminobenzenesulfonic Acid
CAS No.	6527-81-7
Molecular Formula	C13H14N2O3S
Molecular Weight	278.33 g/mol
Synonyms	5-Amino-2-[(2-methylphenyl)amino]benzenesulfonic acid; 2-Amino-4-[(o-tolyl)amino]benzenesulfonic acid; o-Toluidine-m-sulfonic acid, 5-amino-; Benzenesulfonic acid, 5-amino-2-[(2-methylphenyl)amino]-; 2-Methylanilino-5-aminobenzenesulfonic Acid; 2-(o-Toluidino)-5-aminobenzenesulfonic Acid; Fast Scarlet GG Base; C.I. Azoic Diazo Component 12
EINECS	229-426-8

Quality Control

Our production of 2-(2-Methylanilino)-5-Aminobenzenesulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including HPLC, IR spectroscopy, and titration to confirm identity, potency, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment, ensuring full traceability and compliance with your internal quality standards.

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 performance. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Light brown to gray 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
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 1.5%

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