Description

4-Chlorobenzenesulfonic Acid Sodium Salt is an important organic intermediate and sulfonating agent. This compound is valued for its role in introducing the sulfonate functional group, which imparts water solubility and anionic character to target molecules. It is primarily utilized by manufacturers in the agrochemical, pharmaceutical, and specialty chemical industries for synthesis and formulation processes.

Application

• Agrochemical Intermediate: Key building block in the synthesis of herbicides, fungicides, and plant growth regulators.
• Pharmaceutical Synthesis: Used as a sulfonating agent and intermediate in the production of active pharmaceutical ingredients (APIs) and dyes.
• Dye and Pigment Manufacturing: Serves as a precursor and solubilizing agent for anionic dyes and colorants.
• Surfactant and Detergent Formulation: Acts as a raw material for producing anionic surfactants with specific hydrophobic chains.
• Polymer Modification: Employed to introduce sulfonate groups into polymers to enhance hydrophilicity and ionic properties.
• Research & Development: Used in chemical research as a standard or reagent for organic synthesis and method development.

Basic Information

Product Name	4-Chlorobenzenesulfonic Acid Sodium Salt
CAS No.	5138-90-9
Molecular Formula	C6H4ClNaO3S
Molecular Weight	214.60 g/mol
Synonyms	Sodium 4-Chlorobenzenesulfonate; p-Chlorobenzenesulfonic Acid Sodium Salt; Benzenesulfonic acid, 4-chloro-, sodium salt (1:1); 4-Chlorobenzene-1-sulfonic acid sodium salt; Sodium p-chlorobenzenesulfonate; 4-Chlorophenylsulfonic acid sodium salt
EINECS	225-885-8

Quality Control

Our 4-Chlorobenzenesulfonic Acid Sodium Salt is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. A Certificate of Analysis (COA) documenting results for assay, related substances, and other critical parameters 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). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 2.0%
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.