Description

4-Sulfobenzoic Acid is a versatile aromatic sulfonic acid derivative that serves as a critical intermediate in advanced organic synthesis. Its bifunctional structure, featuring both a carboxylic acid and a sulfonic acid group, makes it a valuable building block for creating complex molecules with tailored properties. This compound is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients or functional materials.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for drugs requiring sulfonate or benzoate functionalities.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where its acidic groups aid in salt formation and bioavailability.
• Dye and Pigment Manufacturing: Acts as a coupling agent and solubilizing group in the synthesis of acid dyes and organic pigments.
• Polymer Modification: Employed to introduce sulfonic acid groups into polymers, enhancing properties like hydrophilicity, ion-exchange capacity, or dyeability.
• Catalyst and Ligand Preparation: Serves as a starting material for synthesizing metal-organic catalysts and chelating ligands used in various chemical processes.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic pathways and material science applications.

Basic Information

Product Name	4-Sulfobenzoic Acid
CAS No.	97993-77-6
Molecular Formula	C7H6O5S
Molecular Weight	202.18 g/mol
Synonyms	Benzoic acid, 4-sulfo-; p-Sulfobenzoic Acid; 4-Carboxybenzenesulfonic Acid; Benzenesulfonic acid, 4-carboxy-; p-Carboxybenzenesulfonic Acid; 1-Carboxy-4-sulfobenzene; NSC 403754
EINECS	Contact for details

Quality Control

Our 4-Sulfobenzoic Acid is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets exacting purity and consistency standards. A detailed Certificate of Analysis (COA) is provided with each shipment, documenting key parameters such as assay, impurity profile, and physical characteristics. We are committed to supplying material suitable for demanding applications, including pharmaceutical development.

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 tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling.

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	≤ 20 ppm

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