Description

5-Sulphinosalicylic Acid, Sodium Salt is a high-purity, water-soluble organic salt derived from salicylic acid, serving as a critical intermediate and reagent in advanced chemical synthesis. Its unique sulfino group makes it a valuable building block for creating complex molecules and functional materials. This product is essential for research and development laboratories, pharmaceutical manufacturers, and specialty chemical producers seeking reliable, high-quality raw materials for precise applications.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds requiring sulfonated or salicylate motifs.
• Biochemical Research: Used as a reagent or buffer component in protein studies and enzymatic assays due to its chelating properties.
• Dye and Pigment Synthesis: Acts as an intermediate in the production of azo dyes and other complex colorants.
• Analytical Chemistry: Employed as a standard or complexing agent in various titrimetric and spectrophotometric analytical methods.
• Polymer Modification: Serves as a functional monomer or additive to introduce sulfonic acid groups into polymers, enhancing hydrophilicity and ion-exchange capacity.
• Catalyst Preparation: Used in the preparation of metal-organic catalysts where the sulfino group acts as a ligand.

Basic Information

Product Name	5-Sulphinosalicylic Acid, Sodium Salt
CAS No.	94248-94-9
Molecular Formula	C7H5NaO6S
Molecular Weight	240.16 g/mol
Synonyms	5-Sulfinosalicylic Acid Sodium Salt; Sodium 5-Sulfinosalicylate; 5-Sulfosalicylic Acid Sodium Salt (common misnomer); 2-Hydroxy-5-sulfinobenzoic Acid Sodium Salt; Benzoic acid, 2-hydroxy-5-sulfino-, sodium salt; 5-Carboxy-2-hydroxybenzenesulfinic Acid Sodium Salt
EINECS	Contact for details

Quality Control

Our 5-Sulphinosalicylic Acid, Sodium Salt is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for research and industrial use. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This compound is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect stability and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%
pH (5% solution)	6.0 - 8.0

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