Description

Benzenesulfonic Acid, 2,4,5-Trihydroxy- (9Ci) is a specialized organic sulfonic acid derivative characterized by its unique trihydroxy-substituted aromatic ring structure. This compound matters as a versatile chemical intermediate and building block, offering reactive sites for sulfonation, chelation, and further functionalization. It is needed by research and development chemists, as well as process engineers in the fine chemical, pharmaceutical, and agrochemical industries for synthesizing advanced molecules and functional materials.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel active pharmaceutical ingredients (APIs) and diagnostic agents.
• Agrochemical Synthesis: Used in the development and production of advanced herbicides, fungicides, and plant growth regulators.
• Dye and Pigment Manufacturing: Acts as an intermediate for creating specialized azo dyes, pigments, and colorants.
• Polymer Chemistry: Employed as a monomer or modifying agent to introduce sulfonic acid groups into polymers for ion-exchange resins or specialty coatings.
• Chemical Research: Utilized in academic and industrial R&D for studying sulfonation reactions and developing new synthetic methodologies.
• Chelating Agent Precursor: Its hydroxyl groups make it a candidate for synthesizing ligands used in metal sequestration and catalysis.

Basic Information

Product Name	Benzenesulfonic Acid, 2,4,5-Trihydroxy- (9Ci)
CAS No.	205690-84-2
Molecular Formula	C6H6O6S
Molecular Weight	206.17 g/mol
Synonyms	2,4,5-Trihydroxybenzenesulfonic Acid; 1,2,4-Trihydroxy-5-sulfobenzene; 5-Sulfopyrogallol; Pyrogallol-5-sulfonic Acid; Benzene-1,2,4-triol-5-sulfonic acid; 205690-84-2; 2,4,5-Trihydroxybenzenesulphonic Acid
EINECS	Contact for details

Quality Control

Our Benzenesulfonic Acid, 2,4,5-Trihydroxy- (9Ci) is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting all critical parameters are available upon request, providing full traceability and compliance assurance for your quality protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed under dry, inert conditions to prevent degradation. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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