Description

4-Iodobenzenesulphonic Acid is a versatile organoiodine compound that serves as a key building block in advanced organic synthesis. Its unique structure, featuring both an iodine substituent and a sulfonic acid group, makes it a valuable intermediate for introducing iodine atoms and modifying solubility profiles in target molecules. This chemical is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of iodinated active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Synthesis: Used in the development of novel herbicides, fungicides, and plant growth regulators that require an iodobenzene core.
• Ligand and Catalyst Preparation: Serves as a starting material for synthesizing specialized ligands and metal complexes used in catalytic processes.
• Material Science: Employed in the production of functional polymers and liquid crystals where the sulfonic acid group aids in solubility and self-assembly.
• Dye and Pigment Manufacturing: Acts as an intermediate for creating iodinated dyes and colorants with specific light-fastness properties.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new cross-coupling reactions and structural modifications.

Basic Information

Product Name	4-Iodobenzenesulphonic Acid
CAS No.	13035-63-7
Molecular Formula	C6H5IO3S
Molecular Weight	284.07 g/mol
Synonyms	p-Iodobenzenesulfonic Acid; Benzenesulfonic Acid, 4-iodo-; 4-Iodophenylsulfonic Acid; p-Iodophenylsulfonic Acid; 1-Iodo-4-sulfobenzene; 4-Iodobenzene-1-sulfonic Acid; (4-Iodophenyl)sulfonic Acid
EINECS	235-899-7

Quality Control

Our production of 4-Iodobenzenesulphonic Acid adheres to stringent quality management protocols. Every batch is analytically verified to meet precise purity and composition specifications, ensuring consistency and reliability for your critical synthesis workflows. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to support your quality assurance and regulatory documentation needs.

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 bases and reducing agents. Due to its acidic nature, store separately from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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