Description

Pyridine-3,5-Disulfonic Acid is a versatile and highly functionalized heterocyclic building block. This compound is valued for its dual sulfonic acid groups, which confer strong acidity and excellent water solubility, making it a key intermediate in sophisticated synthesis. It is primarily utilized in the pharmaceutical, agrochemical, and specialty chemical industries for applications ranging from catalyst preparation to the synthesis of advanced materials and active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Catalyst & Ligand Synthesis: Used to prepare water-soluble ligands and catalysts for homogeneous catalysis in various industrial processes.
• Agrochemical Production: Serves as a key intermediate in the manufacture of advanced herbicides, fungicides, and plant growth regulators.
• Dye & Pigment Manufacturing: Acts as a sulfonating agent and intermediate in the production of water-soluble dyes and high-performance pigments.
• Metal Chelation & Extraction: Employed in processes for metal ion chelation, recovery, and purification due to its strong coordinating sulfonate groups.
• Polymer Modification: Used to introduce sulfonic acid functionality into polymers, enhancing properties like hydrophilicity and ion-exchange capacity.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic methodologies and material science.

Basic Information

Product Name	Pyridine-3,5-Disulfonic Acid
CAS No.	13069-04-0
Molecular Formula	C5H5NO6S2
Molecular Weight	239.22 g/mol
Synonyms	3,5-Pyridinedisulfonic Acid; Pyridine-3,5-bis(sulfonic acid); 3,5-Disulfopyridine; 3,5-Pyridyl Disulfonic Acid; 3,5-Disulfonic Acid Pyridine; Pyridine-3,5-diyl Disulfonic Acid; 3,5-Pyridinediyl Disulfonic Acid; 13069-04-0
EINECS	235-959-9

Quality Control

Our Pyridine-3,5-Disulfonic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation by FT-IR and NMR, to ensure it meets exacting specifications for critical applications. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and compliance with your quality requirements.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

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%
Heavy Metals (as Pb)	≤ 20 ppm

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