Description

2-Hydroxy-5-Sulfinobenzoic Acid is a specialized aromatic sulfinic acid derivative that serves as a versatile intermediate in fine chemical synthesis. Its unique bifunctional structure, featuring both phenolic and sulfinic acid groups, makes it a valuable precursor for creating complex molecules with tailored properties. This compound is primarily utilized by manufacturers in the pharmaceutical, agrochemical, and specialty dye industries for research and production purposes.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring sulfonamide or sulfone functionalities.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Acts as a coupling agent and intermediate in the synthesis of azo dyes and other complex colorants.
• Polymer Modification: Employed to introduce sulfinic acid groups into polymer chains, altering solubility and reactivity.
• Chemical Research: Serves as a reagent in organic synthesis laboratories for developing novel compounds and catalytic processes.
• Chelating Agent Precursor: Used in the manufacture of ligands and chelating agents for metal ion sequestration.

Basic Information

Product Name	2-Hydroxy-5-Sulfinobenzoic Acid
CAS No.	19479-88-0
Molecular Formula	C7H6O5S
Molecular Weight	202.18 g/mol
Synonyms	5-Sulfino-2-hydroxybenzoic Acid; 5-Sulfinosalicylic Acid; 2-Hydroxy-5-sulfobenzoic Acid (sulfino form); Benzoic acid, 2-hydroxy-5-sulfino-; Salicylic acid, 5-sulfino-; 5-Carboxy-2-hydroxybenzenesulfinic Acid
EINECS	Contact for details

Quality Control

Every batch of 2-Hydroxy-5-Sulfinobenzoic Acid is manufactured and tested under a strict quality management system. We ensure compliance with relevant industry standards through rigorous analytical protocols, including HPLC for purity and identity confirmation. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and consistency for your critical applications.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed and protected from atmospheric humidity. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 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.