Description

Pyridine-2,3-Disulfonic Acid is a versatile and highly functionalized organic acid derivative, serving as a critical building block and intermediate in advanced chemical synthesis. Its value lies in the strategic positioning of two sulfonic acid groups on the pyridine ring, which imparts strong acidity, water solubility, and chelating properties. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, particularly for developing catalysts, ligands, and active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of complex drug molecules, particularly those requiring sulfonamide or metal-chelating functionalities.
• Catalyst & Ligand Synthesis: Used to create specialized ligands for homogeneous catalysis and metal-organic frameworks (MOFs).
• Agrochemicals: Intermediate in the production of advanced herbicides, fungicides, and plant growth regulators.
• Dye & Pigment Manufacturing: Acts as a sulfonating agent and intermediate in the synthesis of water-soluble dyes and optical brighteners.
• Analytical Chemistry: Employed as a chelating agent in analytical methods and as a standard in chromatographic applications.
• Corrosion Inhibition: Investigated for use in formulating corrosion inhibitors for industrial water systems.
• Polymer Modification: Used to introduce sulfonic acid groups into polymers to enhance hydrophilicity and ion-exchange capacity.
• Research & Development: A valuable tool for organic synthesis and chemical research in academic and industrial laboratories.

Basic Information

Product Name	Pyridine-2,3-Disulfonic Acid
CAS No.	6602-53-5
Molecular Formula	C5H5NO6S2
Molecular Weight	239.22 g/mol
Synonyms	2,3-Pyridinedisulfonic Acid; 2,3-Disulfopyridine; Pyridine-2,3-disulphonic Acid; 2,3-Pyridinedisulphonic Acid; 2,3-Disulfonic Acid Pyridine; 3-Pyridinesulfonic Acid, 2-sulfo-; 2,3-Disulfo-pyridine; 2,3-PDS
EINECS	229-559-6

Quality Control

Our Pyridine-2,3-Disulfonic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity, titration for assay, and FT-IR for identification, to ensure it meets exacting specifications. A detailed Certificate of Analysis (COA) is provided with each shipment, guaranteeing traceability, consistency, and compliance with your research or production requirements.

Storage

Preserve in a tightly closed container, protected from light. Due to its hygroscopic (moisture-sensitive) nature, store in a cool, dry place at a controlled room temperature (15-25°C). The container should be kept in a well-ventilated area separate from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0 %
Purity (HPLC)	≥ 97.0 %
Water Content (KF)	≤ 2.0 %
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.