Description

Benzenesulfonic Acid, 3-Hydroxy-4-Methoxy-, Monopotassium Salt is a high-purity, water-soluble salt derivative of a substituted benzenesulfonic acid, valued for its role as a versatile synthetic intermediate and functional additive. This compound is critical for industries requiring precise chemical building blocks with consistent quality and performance. It is primarily utilized by manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors for synthesis and formulation processes.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a sulfonate or phenolic functional group.
• Agrochemical Synthesis: Serves as a key precursor or additive in the manufacture of herbicides, fungicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Acts as a coupling agent or intermediate in the production of azo dyes and other complex colorants.
• Chemical Research & Development: Employed as a standard or reagent in organic synthesis and process development within R&D laboratories.
• Specialty Surfactants: Can be utilized to create anionic surfactants with specific solubility and surface-active properties.
• Electroplating Additives: Functions as a brightening agent or stabilizer in specific electroplating bath formulations.

Basic Information

Product Name	Benzenesulfonic Acid, 3-Hydroxy-4-Methoxy-, Monopotassium Salt
CAS No.	5011-21-2
Molecular Formula	C7H7KO5S
Molecular Weight	242.29 g/mol
Synonyms	Potassium 3-Hydroxy-4-methoxybenzenesulfonate; 4-Methoxy-3-hydroxybenzenesulfonic Acid Potassium Salt; 3-Hydroxy-4-methoxybenzenesulfonic Acid Monopotassium Salt; 2-Methoxy-5-sulfophenol Potassium Salt; Phenol, 2-methoxy-5-sulfo-, monopotassium salt; Benzenesulfonic acid, 3-hydroxy-4-methoxy-, potassium salt (1:1)
EINECS	225-690-6

Quality Control

Our Benzenesulfonic Acid, 3-Hydroxy-4-Methoxy-, Monopotassium Salt is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and composition. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

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 (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition (Sulfated Ash)	Conforms

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