Description

Sodium Hydrogen 3-Sulphonatoisonicotinate is a specialized organic salt derived from isonicotinic acid, valued for its unique combination of a pyridine ring and a sulfonate group. This structure makes it a versatile intermediate and functional additive, particularly useful for introducing water-solubility and ionic character into complex molecules. It is primarily sought by manufacturers in the pharmaceutical, agrochemical, and specialty chemical synthesis sectors for applications requiring precise molecular modification.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), especially for drugs requiring enhanced solubility or specific ionic properties.
• Agrochemical Synthesis: Used in the production of modern herbicides, fungicides, and plant growth regulators where the sulphonato group improves formulation characteristics.
• Ligand and Catalyst Preparation: Serves as a precursor for creating water-soluble ligands used in homogeneous catalysis and metal complexation.
• Dye and Pigment Intermediate: Employed in the manufacture of certain acid dyes and functional pigments, contributing to color fastness and solubility.
• Surface Modification Agent: Acts as an additive or co-monomer to impart anionic charge and hydrophilicity to polymers and surfaces.
• Research & Development: A valuable reagent in organic and medicinal chemistry research for constructing novel molecular architectures.

Basic Information

Product Name	Sodium Hydrogen 3-Sulphonatoisonicotinate
CAS No.	51591-64-1
Molecular Formula	C6H4NNaO5S
Molecular Weight	225.16 g/mol
Synonyms	3-Carboxy-4-pyridinesulfonic acid sodium salt; Isonicotinic acid-3-sulfonic acid sodium salt; Sodium 3-sulfoisonicotinate; 4-Pyridinecarboxylic acid, 3-sulfo-, sodium salt (1:1); 3-Sulfoisonicotinic acid sodium salt; 3-Sulfonylisonicotinic acid sodium salt; Sodium 3-sulfonylisonicotinate
EINECS	257-286-5

Quality Control

Our Sodium Hydrogen 3-Sulphonatoisonicotinate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for chemical synthesis. Certificates of Analysis (COA) detailing batch-specific results are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture.

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)	≤ 10 ppm

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