Description

Benzenesulfonic Acid is a versatile and industrially significant aromatic sulfonic acid. It serves as a key intermediate and catalyst in numerous chemical synthesis and manufacturing processes. This strong organic acid is essential for producers in the chemical, pharmaceutical, and agrochemical sectors seeking reliable, high-purity raw materials.

Application

• Chemical Synthesis Intermediate: A crucial building block for producing dyes, pigments, and other sulfonated compounds.
• Catalyst: Used as an acid catalyst in esterification, alkylation, and resin curing reactions.
• Pharmaceutical Manufacturing: Employed in the synthesis of various active pharmaceutical ingredients (APIs) and as a counterion in drug formulations.
• Agrochemical Production: Acts as an intermediate in the manufacture of certain herbicides and pesticides.
• Detergent & Surfactant Industry: Serves as a precursor for the production of surfactants and hydrotropes.
• Electroplating & Metal Treatment: Used in certain plating baths and metal surface treatment processes.
• Research & Development: A valuable reagent in academic and industrial R&D laboratories for organic chemistry.

Basic Information

Product Name	Benzenesulfonic Acid
CAS No.	98-11-3
Molecular Formula	C6H6O3S
Molecular Weight	158.18 g/mol
Synonyms	Benzenesulphonic Acid; Phenylsulfonic Acid; Besylic Acid; Benzenesulfonate; Benzenesulphonate; Benzenesulfonic Acid Monohydrate (common form); BSA
EINECS	202-638-7

Quality Control

Our Benzenesulfonic Acid is manufactured under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting these results 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, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. Keep container tightly sealed when not in use to minimize moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid or crystalline solid
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
Water Content (KF)	≤ 2.0 %
Sulfuric Acid	≤ 1.0 %
Residue on Ignition	≤ 0.1 %

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