Description

Potassium 3,4-Dihydroxybenzenesulfonate is the potassium salt of 3,4-dihydroxybenzenesulfonic acid, a functional organic intermediate. This compound is valued for its water-solubility and the reactivity of its phenolic and sulfonate groups, making it a versatile building block for synthesis. It is primarily sought by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for applications ranging from antioxidant synthesis to polymer modification.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a water-soluble phenolic moiety.
• Antioxidant Precursor: Serves as a key starting material for the production of synthetic antioxidants used in polymers, fuels, and food preservation.
• Agrochemical Synthesis: Employed in the manufacture of certain herbicides and plant growth regulators.
• Dye and Pigment Intermediate: Acts as a coupling agent or a sulfonating component in the production of colorants.
• Polymer Modification: Used to introduce hydrophilic sulfonate groups into polymers to enhance water solubility or dispersibility.
• Research & Development: Utilized in chemical research for studying sulfonation reactions and developing new organic compounds.

Basic Information

Product Name	Potassium 3,4-Dihydroxybenzenesulfonate
CAS No.	29571-26-4
Molecular Formula	C6H5KO6S
Molecular Weight	244.27 g/mol
Synonyms	Potassium 4-Sulfocatechol; 3,4-Dihydroxybenzenesulfonic Acid Potassium Salt; Catechol-4-sulfonic Acid Potassium Salt; 4-Sulfopyrocatechol Potassium Salt; Potassium 4-Sulfocatechuate; 1,2-Dihydroxy-4-sulfobenzene Potassium Salt
EINECS	Contact for details

Quality Control

Our Potassium 3,4-Dihydroxybenzenesulfonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications such as assay, impurity profile, and residual solvents are available upon request to support your quality assurance protocols.

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). This product is hygroscopic (moisture-sensitive) and easily oxidized; therefore, containers must be kept tightly sealed after opening to minimize exposure to air and moisture. For long-term storage under optimal conditions, consider an inert atmosphere.

Specification

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

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