Description

4-Sulfocatechol is a specialized organic intermediate featuring a catechol ring system substituted with a sulfonic acid group, which imparts high water solubility and strong acidity. This unique structure makes it a valuable building block for synthesizing complex molecules, particularly in the production of dyes, pigments, and advanced pharmaceutical compounds. It is essential for research and industrial applications requiring a highly functionalized, water-soluble aromatic precursor. The compound is supplied as a high-purity material to ensure consistent performance in sensitive chemical processes.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs) and diagnostic agents.
• Dye and Pigment Manufacturing: Used as a coupling agent and intermediate for producing azo dyes, sulfur dyes, and specialty pigments.
• Chemical Research & Development: Serves as a versatile building block in organic synthesis for novel compound libraries.
• Electroplating Additives: Functions as a brightener and leveling agent in electroplating baths.
• Photographic Chemicals: Utilized in the formulation of developers and other photo-sensitive materials.
• Polymer Modification: Acts as a monomer or cross-linking agent to introduce sulfonic acid groups into polymers for ion-exchange resins.

Basic Information

Product Name	4-Sulfocatechol
CAS No.	7134-09-0
Molecular Formula	C6H6O5S
Molecular Weight	190.17 g/mol
Synonyms	1,2-Dihydroxy-4-sulfobenzene; 4-Sulfobenzene-1,2-diol; Catechol-4-sulfonic Acid; 4-Sulfocatechol; 4-Sulfopyrocatechol; 1,2-Dihydroxybenzenesulfonic Acid; 4-Hydroxy-3-sulfophenol; 4-Sulfocatechol Sodium Salt (common salt form)
EINECS	Contact for details

Quality Control

Every batch of 4-Sulfocatechol is manufactured under a strict quality management system. Our products undergo rigorous quality testing, including HPLC for purity and identity confirmation, to ensure compliance with industry standards and customer specifications. Certificates of Analysis (COA) detailing batch-specific results are available upon request. We adhere to cGMP principles where applicable to support pharmaceutical and high-value industrial applications.

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 sealed to prevent absorption of atmospheric moisture. Keep away from strong acids and organic solvents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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