Description

4,4'-Diamino-3'-Methyldiphenylamine-2-Sulfonic Acid is a specialized aromatic amine sulfonic acid derivative that serves as a critical high-purity intermediate in advanced chemical synthesis. Its molecular structure, featuring multiple amine groups and a sulfonic acid moiety, makes it a valuable building block for creating complex, functional molecules with specific properties. This compound is primarily sought after by manufacturers in the dye, pigment, and pharmaceutical industries who require precise and reliable raw materials for their production processes.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of high-performance azo dyes, acid dyes, and organic pigments, contributing to color strength and fastness properties.
• Pharmaceutical Intermediate: Used in the research and development of active pharmaceutical ingredients (APIs), particularly those with complex aromatic structures.
• Polymer Additive: Can be incorporated as a functional monomer or curing agent in specialty polymer systems to modify thermal or chemical resistance.
• Chemical Research & Development: Serves as a versatile building block in organic synthesis for academic and industrial R&D laboratories.
• Liquid Crystal and Electronic Materials: Potential use in the synthesis of advanced materials for electronic applications due to its rigid, functionalized structure.

Basic Information

Product Name	4,4'-Diamino-3'-Methyldiphenylamine-2-Sulfonic Acid
CAS No.	6527-78-2
Molecular Formula	C13H15N3O3S
Molecular Weight	293.34 g/mol
Synonyms	2-Amino-4-[(4-amino-2-methylphenyl)amino]benzenesulfonic acid; 4,4'-Diamino-3'-methyldiphenylamine-2-sulphonic acid; Benzenesulfonic acid, 2-amino-4-[(4-amino-2-methylphenyl)amino]-; 2-Amino-4-[(4-amino-o-tolyl)amino]benzenesulfonic acid; 4-Amino-2'-methyl-4'-aminodiphenylamine-2-sulfonic acid; DAPSA; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our production of 4,4'-Diamino-3'-Methyldiphenylamine-2-Sulfonic Acid adheres to a stringent quality management system to ensure batch-to-batch consistency and high purity. Every lot is analyzed against comprehensive specifications using advanced techniques like HPLC and FTIR. A Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with each shipment, ensuring full traceability and compliance with your quality requirements.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality.

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 (Sulfated Ash)	≤ 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.