Description

3,4-Dichlorobenzenesulfonic Acid is a versatile chlorinated aromatic sulfonic acid derivative, serving as a critical intermediate in advanced organic synthesis. Its value lies in its dual functionality, providing both a reactive sulfonic acid group and chlorine substituents for further chemical transformations. This compound is essential for manufacturers in the agrochemical and pharmaceutical sectors, where it is used to build complex molecules for active ingredients and fine chemicals.

Application

• Agrochemical Intermediate: A key building block in the synthesis of modern herbicides, fungicides, and plant growth regulators.
• Pharmaceutical Synthesis: Used as a precursor for creating sulfonamide-based drugs and other active pharmaceutical ingredients (APIs).
• Dye and Pigment Manufacturing: Functions as an intermediate in the production of specialized dyes and organic pigments.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity or ion-exchange capacity.
• Chemical Research & Development: Serves as a valuable reagent in organic chemistry labs for method development and novel compound synthesis.
• Surfactant and Detergent Industry: Acts as a starting material for synthesizing specialized anionic surfactants.

Basic Information

Product Name	3,4-Dichlorobenzenesulfonic Acid
CAS No.	939-95-7
Molecular Formula	C6H4Cl2O3S
Molecular Weight	227.06 g/mol
Synonyms	3,4-Dichlorobenzenesulphonic Acid; 1,2-Dichloro-4-sulfobenzene; Benzenesulfonic acid, 3,4-dichloro-; 4-Sulfo-1,2-dichlorobenzene; 3,4-Dichlorophenylsulfonic Acid; 3,4-DCBSA
EINECS	213-366-7

Quality Control

Our 3,4-Dichlorobenzenesulfonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets precise customer specifications. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

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. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Melting Point	Contact for details

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