Description

Potassium 4-Chloro-3-Nitrobenzenesulphonate is a high-purity, water-soluble salt of a substituted benzenesulfonic acid, serving as a critical synthetic intermediate and functional additive. Its value lies in its unique combination of a sulfonate group for solubility and ionic character, a nitro group for reactivity, and a chloro substituent for further functionalization, making it a versatile building block. This compound is essential for manufacturers and R&D laboratories in the agrochemical, pharmaceutical, and specialty dye industries seeking to develop new active ingredients or modify material properties.

Application

• Agrochemical Intermediate: A key precursor in the synthesis of modern herbicides, fungicides, and plant growth regulators, where its structure allows for the creation of compounds with specific biological activity.
• Pharmaceutical Synthesis: Used as a building block for constructing complex molecules in active pharmaceutical ingredient (API) development, particularly in creating sulfonamide-based drugs.
• Dye and Pigment Manufacturing: Functions as an intermediate for producing azo dyes and other colored compounds, where the nitro and sulfonate groups contribute to color fastness and solubility.
• Chemical Research & Development: Employed in organic synthesis laboratories for coupling reactions, nucleophilic aromatic substitutions, and as a source of a water-soluble aromatic moiety.
• Surfactant and Detergent Industry: Can be utilized to synthesize specialized anionic surfactants with specific hydrophobic/hydrophilic balance for industrial cleaning formulations.
• Polymer Modification: Acts as a functional monomer or additive to introduce ionic groups into polymers, enhancing properties like hydrophilicity, dyeability, or antistatic performance.

Basic Information

Product Name	Potassium 4-Chloro-3-Nitrobenzenesulphonate
CAS No.	6671-49-4
Molecular Formula	C6H3ClKNO5S
Molecular Weight	275.71 g/mol
Synonyms	Potassium 4-Chloro-3-nitrobenzenesulfonate; 4-Chloro-3-nitrobenzenesulfonic Acid Potassium Salt; Benzenesulfonic acid, 4-chloro-3-nitro-, potassium salt; 3-Nitro-4-chlorobenzenesulfonic Acid Potassium Salt; 4-Chloro-3-nitrobenzene-1-sulfonic Acid Potassium Salt; Potassium 4-Chloro-3-nitrobenzene-1-sulfonate; 6671-49-4; PNCS Potassium Salt
EINECS	229-722-5

Quality Control

Our Potassium 4-Chloro-3-Nitrobenzenesulphonate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. We provide Certificates of Analysis (COA) with each shipment, detailing results from tests including assay (HPLC), identification (IR), and limits for key impurities. Our quality commitment ensures reliable performance and consistency for your critical synthesis and formulation processes.

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 purity and handling properties.

Specification

Item	Specification
Appearance	Yellow to pale brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Chloride Content	Conforms
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.5%

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