Description

4-Sulfobenzoic Acid Monopotassium Salt is a high-purity potassium salt derivative of sulfobenzoic acid, valued for its water solubility and stability as a key organic intermediate. This compound is essential for applications requiring a consistent and reliable source of a sulfonated aromatic building block. It is primarily utilized by manufacturers in the pharmaceutical, agrochemical, and specialty chemical synthesis industries.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Synthesis: Serves as a key building block for producing herbicides, fungicides, and plant growth regulators.
• Dye & Pigment Manufacturing: Acts as a precursor or intermediate in the production of sulfonated dyes and colorants.
• Polymer & Resin Modification: Employed to introduce sulfonate groups into polymers to enhance hydrophilicity or ion-exchange properties.
• Chemical Research & Development: Used as a standard or reagent in organic synthesis and method development laboratories.
• Electroplating & Surface Treatment: Functions as an additive in plating baths for improved metal deposition and surface finishing.

Basic Information

Product Name	4-Sulfobenzoic Acid Monopotassium Salt
CAS No.	5399-63-3
Molecular Formula	C7H5KO5S
Molecular Weight	240.28 g/mol
Synonyms	Potassium 4-Sulfobenzoate; Benzoic acid, 4-sulfo-, monopotassium salt; 4-Carboxybenzenesulfonic Acid Potassium Salt; p-Sulfobenzoic Acid Potassium Salt; Potassium p-Sulfobenzoate; KSBA; 4-Sulfobenzoic Acid Potassium Salt
EINECS	226-418-9

Quality Control

Our 4-Sulfobenzoic Acid Monopotassium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. Certificates of Analysis (COA) documenting these results are provided to guarantee traceability and batch-to-batch consistency for your critical processes.

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 after opening to prevent moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
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.