Description

4-Chloro-3-Nitrobenzenesulfonic Acid, Sodium Salt is a versatile aromatic sulfonate intermediate of significant commercial importance. Its unique structure, featuring both chloro and nitro substituents, makes it a valuable building block for synthesizing more complex molecules, particularly dyes and pigments. This high-purity chemical is essential for manufacturers in the agrochemical, pharmaceutical, and specialty chemical industries seeking reliable and consistent raw materials for their production processes.

Application

• Dye and Pigment Intermediate: Serves as a key precursor in the synthesis of azo dyes, acid dyes, and other colorants, contributing to color fastness and specific hue properties.
• Agrochemical Synthesis: Used in the manufacturing of certain herbicides, fungicides, and plant growth regulators where the sulfonate group enhances solubility and bioavailability.
• Pharmaceutical Intermediate: Acts as a building block for the production of active pharmaceutical ingredients (APIs), particularly in molecules requiring a sulfonated aromatic core.
• Chemical Research & Development: Employed in organic synthesis laboratories for the development of new compounds and material science applications.
• Surfactant and Detergent Industry: Can be utilized to modify surfactants or as an intermediate for specialty anionic surfactants with specific properties.
• Photographic Chemicals: Finds application in the synthesis of certain chemicals used in photographic and imaging processes.

Basic Information

Product Name	4-Chloro-3-Nitrobenzenesulfonic Acid, Sodium Salt
CAS No.	17691-19-9
Molecular Formula	C6H3ClNNaO5S
Molecular Weight	259.60 g/mol
Synonyms	Benzenesulfonic acid, 4-chloro-3-nitro-, sodium salt; Sodium 4-chloro-3-nitrobenzenesulfonate; 4-Chloro-3-nitrobenzenesulfonic acid sodium salt; 3-Nitro-4-chlorobenzenesulfonic acid sodium salt; 1-Chloro-2-nitro-5-sulfobenzene sodium salt; NSC 403119; 4-Chloro-3-nitrobenzene-1-sulfonic acid sodium salt
EINECS	241-671-9

Quality Control

Our 4-Chloro-3-Nitrobenzenesulfonic Acid, Sodium Salt is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets the high standards required for industrial and research applications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and consistency.

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). Keep away from strong oxidizing agents and incompatible materials. The product may be hygroscopic; ensure containers are sealed tightly after use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	Reported on COA
Related Substances (HPLC)	Individual impurity ≤ 0.5%, Total impurities ≤ 2.0%

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