Description

2,3-Dichlorosulfanilic Acid is a specialized aromatic sulfonic acid derivative that serves as a critical synthetic intermediate and functional building block. Its value lies in the unique reactivity conferred by the combination of sulfonic acid and dichloro substituents on the aniline ring, enabling precise chemical modifications. This compound is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and dyestuff industries seeking to develop novel active ingredients or high-performance colorants.

Application

• Pharmaceutical Intermediate: Key starting material or building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a sulfonamide or sulfonic acid moiety.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents where the dichloroaniline structure provides specific biological activity.
• Dyestuff and Pigment Manufacturing: Serves as a precursor for azo dyes and other complex colorants, contributing to color fastness and specific hue properties.
• Chemical Research & Development: A valuable reagent in organic synthesis for introducing sulfonic acid groups and for further functionalization via the chlorine atoms.
• Liquid Crystal & Electronic Materials: Potential intermediate in the synthesis of specialized organic compounds for advanced material science applications.
• Corrosion Inhibitor Formulation: Can be utilized as a component in formulations designed to protect metal surfaces in industrial processes.

Basic Information

Item	Detail
Product Name	2,3-Dichlorosulfanilic Acid
CAS No.	56978-58-6
Molecular Formula	C6H5Cl2NO3S
Molecular Weight	242.08 g/mol
Synonyms	4-Amino-2,3-dichlorobenzenesulfonic Acid; 2,3-Dichloroaniline-4-sulfonic Acid; Benzenesulfonic acid, 4-amino-2,3-dichloro-; 2,3-Dichloro-4-sulfoaniline; 2,3-Dichloro-4-aminobenzenesulfonic Acid
EINECS	Contact for details

Quality Control

Our 2,3-Dichlorosulfanilic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and consistent quality.

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 to prevent absorption of atmospheric moisture. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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