Description

4-Amino-2,5-Dichlorobenzenesulfonic Acid is a key sulfonated aromatic amine intermediate with significant industrial utility. Its molecular structure, featuring both amino and sulfonic acid groups, makes it a versatile building block for the synthesis of more complex chemical entities. This compound is primarily sought after by manufacturers in the dye, pigment, and pharmaceutical industries for producing high-value specialty chemicals.

Application

• Dye and Pigment Intermediate: A crucial precursor for the synthesis of azo dyes, acid dyes, and reactive dyes, imparting color fastness and specific hue properties.
• Pharmaceutical Synthesis: Serves as a key building block in the manufacture of certain active pharmaceutical ingredients (APIs) and diagnostic agents.
• Chemical Research & Development: Used in organic synthesis laboratories for developing novel sulfonated compounds and studying reaction mechanisms.
• Specialty Chemical Production: Employed in the synthesis of optical brighteners, corrosion inhibitors, and other functional chemicals.
• Liquid Crystal & Electronic Material Precursor: Can be utilized in the development of advanced materials for electronic applications.

Basic Information

Product Name	4-Amino-2,5-Dichlorobenzenesulfonic Acid
CAS No.	88-50-6
Molecular Formula	C6H5Cl2NO3S
Molecular Weight	242.08 g/mol
Synonyms	2,5-Dichloro-4-aminobenzenesulfonic Acid; 4-Amino-2,5-dichlorobenzenesulphonic Acid; 2,5-Dichloroaniline-4-sulfonic Acid; Benzenesulfonic acid, 4-amino-2,5-dichloro-; 1-Amino-2,5-dichloro-4-sulfobenzene; 88-50-6; 4-Amino-2,5-dichlorophenylsulfonic acid
EINECS	201-837-7

Quality Control

Our 4-Amino-2,5-Dichlorobenzenesulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing assay results, physical characteristics, and test methods is provided with every shipment to guarantee 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). Keep away from strong oxidizing agents and strong bases. Due to its sulfonic acid nature, it is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent absorption of atmospheric moisture.

Specification

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