Description

4-Chlorobenzenesulfonic Acid Potassium Salt is a versatile organosulfur compound widely utilized as a key intermediate and building block in advanced chemical synthesis. Its primary value lies in providing a functionalized aromatic sulfonate moiety, which is crucial for introducing solubility, stability, and specific reactivity into target molecules. This product is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require high-purity intermediates for developing active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a critical building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring sulfonamide or sulfonate functional groups.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents where the chlorophenylsulfonate group contributes to biological activity.
• Dye and Pigment Manufacturing: Acts as a precursor or intermediate in the synthesis of sulfonated azo dyes and other colorants, enhancing water solubility.
• Polymer Modification: Employed to introduce anionic character or specific functional sites into polymers for applications like ion-exchange resins or specialty coatings.
• Chemical Research & Development: A valuable reagent in organic synthesis for constructing complex molecules, especially in medicinal chemistry and material science projects.
• Surfactant and Detergent Industry: Can be used as a starting material for synthesizing specialized anionic surfactants with specific hydrophobic/hydrophilic balance.

Basic Information

Product Name	4-Chlorobenzenesulfonic Acid Potassium Salt
CAS No.	78135-07-6
Molecular Formula	C6H4ClKO3S
Molecular Weight	230.71 g/mol
Synonyms	Potassium 4-Chlorobenzenesulfonate; Potassium p-Chlorobenzenesulfonate; 4-Chlorobenzene-1-sulfonic Acid Potassium Salt; Benzenesulfonic Acid, 4-chloro-, Potassium Salt; p-Chlorophenylsulfonic Acid Potassium Salt; 1-Chloro-4-sulfophenyl Potassium Salt; Potassium (4-chlorophenyl)sulfonate
EINECS	Contact for details

Quality Control

Our 4-Chlorobenzenesulfonic Acid Potassium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets exacting standards for use in sensitive applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%
pH (5% solution)	6.0 - 8.0

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