Description

2-Sulfobenzoic Acid Hydrate is a versatile aromatic sulfonic acid derivative, valued for its dual functionality as both a sulfonic acid and a carboxylic acid. This compound is a critical intermediate in the synthesis of specialized dyes, fluorescent whitening agents, and high-performance polymers. It is essential for manufacturers in the fine chemical, agrochemical, and pharmaceutical industries seeking to introduce sulfonate groups for enhanced solubility or specific reactivity.

Application

• Chemical Synthesis Intermediate: A key building block for producing sulfonated dyes, optical brighteners, and fluorescent markers.
• Pharmaceutical Manufacturing: Used in the synthesis of active pharmaceutical ingredients (APIs) and prodrugs requiring sulfonate functionality.
• Agrochemical Production: Serves as a precursor for certain herbicides and plant growth regulators.
• Polymer & Resin Modification: Incorporated to create sulfonated polymers with improved ion-exchange capacity or hydrophilicity.
• Research & Development: Employed in academic and industrial R&D for novel compound synthesis and material science applications.
• Catalyst & Ligand Preparation: Utilized in the development of metal-chelating agents and specialized catalysts.

Basic Information

Product Name	2-Sulfobenzoic Acid Hydrate
CAS No.	123333-68-6
Molecular Formula	C7H6O5S • xH2O
Molecular Weight	202.19 (Anhydrous basis)
Synonyms	2-Sulfobenzoic Acid Monohydrate; Benzoic acid, 2-sulfo-, hydrate; o-Sulfobenzoic Acid Hydrate; 2-Carboxybenzenesulfonic Acid Hydrate; Sulfosalicylic Acid Impurity; o-Carboxybenzenesulfonic Acid; 1-Carboxy-2-sulfobenzene
EINECS	Contact for details

Quality Control

Our 2-Sulfobenzoic Acid Hydrate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with every shipment to guarantee it meets your specific application requirements.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0% (on anhydrous basis)
Water Content (KF)	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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