Description

3,5-Dichloro-Benzenesulfonic Acid is a versatile aromatic sulfonic acid derivative characterized by its two chlorine substituents. This compound serves as a critical building block and intermediate in advanced organic synthesis, valued for its strong acidity and functional group reactivity. It is primarily utilized by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for the production of active ingredients, dyes, and functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the manufacture of herbicides, fungicides, and other crop protection agents.
• Dye and Pigment Production: Serves as a sulfonating agent and intermediate for creating acid dyes and organic pigments.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers for ion-exchange resins or to alter material properties.
• Chemical Research & Development: A valuable reagent in organic chemistry labs for constructing complex molecules and studying reaction mechanisms.
• Catalyst and Ligand Preparation: Used in the synthesis of metal-organic complexes and acidic catalysts.

Basic Information

Product Name	3,5-Dichloro-Benzenesulfonic Acid
CAS No.	33469-47-5
Molecular Formula	C6H4Cl2O3S
Molecular Weight	227.06 g/mol
Synonyms	3,5-Dichlorobenzenesulfonic Acid; Benzenesulfonic acid, 3,5-dichloro-; 3,5-Dichlorophenylsulfonic Acid; m-Dichlorobenzenesulfonic Acid; 3,5-Dichlorobenzene-1-sulfonic Acid; NSC 403119; 3,5-DCBA
EINECS	Contact for details

Quality Control

Our 3,5-Dichloro-Benzenesulfonic Acid is produced under stringent quality management systems. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request, providing full traceability and compliance assurance for your regulatory needs.

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%
Water Content (KF)	≤ 2.0%
Melting Point	Contact for details
Residue on Ignition	≤ 0.1%

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