Description

3,5-Dichloro-4-Hydroxybenzenesulfonyl Chloride is a key aromatic sulfonyl chloride derivative, serving as a versatile and reactive chemical intermediate. Its value lies in its ability to act as a sulfonating agent, enabling the synthesis of sulfonamides and other functionalized aromatic compounds critical to advanced manufacturing. This product is essential for research and production in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to build complex molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial building block for the synthesis of active pharmaceutical ingredients (APIs), particularly those containing sulfonamide or sulfonate ester functional groups.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents that require a dichlorophenol-sulfonyl backbone.
• Dyestuff and Pigment Manufacturing: Serves as an intermediate for creating sulfonated azo dyes and other colorants with enhanced properties.
• Polymer Modification: Employed to introduce sulfonyl chloride groups into polymer chains for subsequent functionalization, improving material characteristics.
• Chemical Research & Development: A valuable reagent in organic synthesis for exploring new sulfonation reactions and creating novel chemical entities.
• Liquid Crystal and Electronic Material Precursor: Can be utilized in the synthesis of specialized organic compounds for advanced material science applications.

Basic Information

Product Name	3,5-Dichloro-4-Hydroxybenzenesulfonyl Chloride
CAS No.	13432-81-0
Molecular Formula	C6H3Cl3O3S
Molecular Weight	261.51 g/mol
Synonyms	4-Hydroxy-3,5-dichlorobenzenesulfonyl chloride; 3,5-Dichloro-4-hydroxybenzenesulfonyl chloride; 2,6-Dichloro-4-(chlorosulfonyl)phenol; Benzenesulfonyl chloride, 3,5-dichloro-4-hydroxy-; 4-(Chlorosulfonyl)-2,6-dichlorophenol; 2,6-Dichloro-4-hydroxybenzenesulfonyl chloride
EINECS	236-583-8

Quality Control

Our 3,5-Dichloro-4-Hydroxybenzenesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for use as a high-value intermediate. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every 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 a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent decomposition from atmospheric moisture. Keep away from strong bases, oxidizing agents, and sources of heat.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Contact for details

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