Description

Pyridine-2,5-Disulfonic Acid is a versatile and highly functionalized organic intermediate characterized by its two sulfonic acid groups on a pyridine backbone. This compound is valued for its strong acidity and water solubility, making it an effective catalyst and building block in complex organic synthesis. It is primarily sought after by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for the development of active ingredients, dyes, and advanced materials.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for molecules requiring a sulfonated pyridine moiety.
• Catalyst in Organic Synthesis: Utilized as an acidic catalyst in various organic reactions, including esterification, condensation, and polymerization processes.
• Agrochemical Synthesis: Employed in the production of advanced herbicides, fungicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Acts as an intermediate for creating water-soluble dyes and functional pigments.
• Ligand for Metal Complexation: Used in coordination chemistry and catalysis due to its ability to chelate metal ions.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic pathways and material properties.

Basic Information

Product Name	Pyridine-2,5-Disulfonic Acid
CAS No.	17624-04-3
Molecular Formula	C5H5NO6S2
Molecular Weight	239.22 g/mol
Synonyms	2,5-Pyridinedisulfonic Acid; Pyridine-2,5-disulphonic Acid; 2,5-Disulfopyridine; 2,5-Pyridyl Disulfonic Acid; 2,5-Disulfonic Acid Pyridine; 2,5-Pyridinedisulphonic Acid; 2,5-PDS
EINECS	241-607-2

Quality Control

Our Pyridine-2,5-Disulfonic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for demanding synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch 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). This product is hygroscopic (moisture-sensitive) and must be kept under dry conditions to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%

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