Description

2-Iodobenzenesulfonic Acid Dihydrate is a versatile organoiodine building block and sulfonic acid derivative, primarily valued for its dual functional groups that enable diverse chemical transformations. This compound is essential for researchers and manufacturers requiring a reliable source of high-purity, structurally defined intermediates for advanced synthesis. It is particularly critical for the development of pharmaceuticals, agrochemicals, and specialty dyes where precise molecular architecture is paramount.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of active pharmaceutical ingredients (APIs), especially those containing aryl iodide or sulfonate ester motifs for coupling reactions.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Acts as an intermediate for creating specialized azo dyes and other colorants with specific light-fastness and solubility properties.
• Ligand and Catalyst Development: Employed in organometallic chemistry for the preparation of novel ligands and catalysts used in cross-coupling reactions (e.g., Suzuki, Heck).
• Material Science Research: Utilized in the synthesis of functionalized polymers, liquid crystals, and organic electronic materials.
• Chemical Research & Development: A valuable reagent for method development, library synthesis, and exploring new reaction pathways in academic and industrial R&D labs.

Basic Information

Product Name	2-Iodobenzenesulfonic Acid Dihydrate
CAS No.	1094026-90-0
Molecular Formula	C6H5IO3S · 2H2O
Molecular Weight	328.08 g/mol (Dihydrate)
Synonyms	2-Iodobenzenesulfonic Acid Hydrate; Benzenesulfonic acid, 2-iodo-, dihydrate; o-Iodobenzenesulfonic Acid Dihydrate; 2-Iodophenylsulfonic Acid Dihydrate; Ortho-Iodobenzenesulfonic Acid Dihydrate; 1-Iodo-2-sulfobenzoic Acid Dihydrate (obsolete); AI3-52202 (possible registry)
EINECS	Contact for details

Quality Control

Our 2-Iodobenzenesulfonic Acid Dihydrate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. We provide a detailed Certificate of Analysis (COA) with each shipment, which includes data from techniques such as HPLC, NMR, and titration. Our quality commitment supports applications requiring high-purity intermediates for GMP or research purposes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric humidity. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	9.0 - 12.0% (Theoretical for dihydrate: ~11.0%)
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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