Description

2-Amino-3,5-Dichlorobenzenesulfonic Acid is a high-purity sulfonic acid derivative serving as a critical building block in advanced organic synthesis. Its value lies in its bifunctional structure, featuring both an aromatic amine and a sulfonic acid group, which enables its use in creating complex, high-value molecules. This intermediate is essential for manufacturers in the pharmaceutical, agrochemical, and specialty dye industries who require reliable, high-quality raw materials for research and production.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring a dichloroaniline sulfonate scaffold.
• Agrochemical Synthesis: Used in the manufacture of herbicides, fungicides, and insecticides, where the chlorinated benzene ring provides biological activity.
• Dye and Pigment Manufacturing: Serves as a coupling agent and intermediate for producing azo dyes and other complex colorants.
• Chemical Research & Development: Employed in organic labs for constructing novel sulfonated aromatic compounds and exploring new reaction pathways.
• Liquid Crystal & Electronic Materials: Potential intermediate for synthesizing sulfonated components used in advanced material science applications.

Basic Information

Product Name	2-Amino-3,5-Dichlorobenzenesulfonic Acid
CAS No.	6406-21-9
Molecular Formula	C6H5Cl2NO3S
Molecular Weight	242.08 g/mol
Synonyms	3,5-Dichloro-2-aminobenzenesulfonic Acid; 2-Amino-3,5-dichlorobenzenesulphonic Acid; Benzenesulfonic acid, 2-amino-3,5-dichloro-; 3,5-Dichloroanthranilic-2-sulfonic Acid; 2-Amino-3,5-dichlorophenylsulfonic Acid; 3,5-Dichloro-2-sulfoaniline
EINECS	229-074-4

Quality Control

Every batch of 2-Amino-3,5-Dichlorobenzenesulfonic Acid is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards through rigorous analytical controls, including HPLC, NMR, and titration methods. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee traceability and consistency for your critical processes.

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 sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	White to off-white crystalline 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

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