Description

4-Amino-4'-Chlorodiphenylamine-2-Sulfonic Acid is a specialized aromatic amine sulfonic acid derivative that serves as a critical intermediate in advanced chemical synthesis. Its molecular structure, featuring both amino and sulfonic acid functional groups, makes it a versatile building block for creating complex, high-value compounds. This product is essential for manufacturers in the dye, pigment, and pharmaceutical industries seeking to develop products with specific chromophoric or bioactive properties.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and reactive dyes, imparting color fastness and specific hue characteristics.
• Pharmaceutical Synthesis: Used as a building block in the research and production of active pharmaceutical ingredients (APIs), particularly those with sulfonamide or complex amine structures.
• Functional Chemical Production: Employed in the manufacture of optical brighteners, photographic chemicals, and other specialty organic compounds.
• Research & Development: Serves as a valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways and material properties.
• Polymer Additives: Can be utilized in the synthesis of polymers and resins where sulfonic acid groups are required for functionality, such as in ion-exchange materials.

Basic Information

Product Name	4-Amino-4'-Chlorodiphenylamine-2-Sulfonic Acid
CAS No.	6548-34-1
Molecular Formula	C12H11ClN2O3S
Molecular Weight	298.75 g/mol
Synonyms	2-Amino-5-[(4-chlorophenyl)amino]benzenesulfonic Acid; 4-Amino-4'-chloro-2-aminodiphenylamine-2'-sulfonic Acid; 4-Chloro-4'-Aminodiphenylamine-2-Sulfonic Acid; 1-Amino-2-sulfo-4-(4'-chlorophenylamino)benzene; C.I. 37240; Azoic Coupling Component 20; CL 37240
EINECS	229-476-6

Quality Control

Our 4-Amino-4'-Chlorodiphenylamine-2-Sulfonic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) detailing key parameters such as assay, impurity profile, and physical characteristics. Our quality commitment ensures the material meets the stringent requirements for use in fine chemical and pharmaceutical intermediate applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled 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 and handling properties.

Specification

Item	Specification
Appearance	Light brown to gray powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
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.