Description

4 5-Dihydroxy-1 3-Benzenedisulfonic Acid is a high-purity, multi-functional aromatic sulfonic acid derivative, serving as a critical intermediate and reagent in advanced chemical synthesis. Its unique structure, featuring both sulfonic acid and phenolic hydroxyl groups, provides excellent water solubility and chelating properties, making it invaluable for creating specialized compounds. This product is essential for manufacturers and R&D laboratories in the pharmaceutical, dye, and specialty chemical industries seeking reliable, high-quality raw materials for complex processes.

Application

• Pharmaceutical Intermediate: Key building block for synthesizing active pharmaceutical ingredients (APIs), particularly in the development of sulfonamide-based drugs and diagnostic agents.
• Dye and Pigment Manufacturing: Acts as a crucial intermediate for producing water-soluble azo dyes and high-performance pigments, enhancing color fastness and solubility.
• Metal Chelating Agent: Used in water treatment formulations and industrial cleaning products to sequester metal ions like calcium, magnesium, and iron.
• Chemical Synthesis Reagent: Employed in organic synthesis for introducing sulfonic acid groups or as a catalyst in various condensation and polymerization reactions.
• Analytical Chemistry: Serves as a standard or reagent in chromatographic analysis and other laboratory testing procedures.
• Electroplating Additive: Used in electroplating baths to improve bath stability and the quality of metal deposits.

Basic Information

Product Name	4 5-Dihydroxy-1 3-Benzenedisulfonic Acid
CAS No.	270573-71-2
Molecular Formula	C6H6O8S2
Molecular Weight	270.24 g/mol
Synonyms	1,3-Benzenedisulfonic acid, 4,5-dihydroxy-; 4,5-Dihydroxybenzene-1,3-disulfonic acid; 4,5-Dihydroxy-m-benzenedisulfonic acid; Tiron (related compound/analog); Pyrocatechol-3,5-disulfonic acid; 3,5-Disulfopyrocatechol; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our 4 5-Dihydroxy-1 3-Benzenedisulfonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards suitable for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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, which can affect product quality and handling properties.

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.