Description

Benzenesulfonic Acid Monohydrate is a versatile organic acid salt widely used as a key intermediate and catalyst in industrial synthesis. Its strong acidic properties and solubility in water and organic solvents make it a valuable reagent for chemical transformations and formulation processes. This compound is essential for manufacturers in the pharmaceutical, agrochemical, dye, and polymer industries seeking reliable and consistent chemical building blocks.

Application

• Chemical Synthesis Intermediate: A crucial building block for producing dyes, pigments, and fluorescent whitening agents.
• Catalyst & Acidulant: Used as an acid catalyst in esterification, alkylation, and resin curing reactions.
• Pharmaceutical Manufacturing: Serves as an intermediate in the synthesis of various active pharmaceutical ingredients (APIs).
• Agrochemical Production: Employed in the manufacture of herbicides, pesticides, and plant growth regulators.
• Electroplating Additive: Functions in electroplating baths and surface treatment formulations.
• Polymer Industry: Acts as a curing agent or cross-linking agent in specific polymer systems.
• Laboratory Research: Used as a standard or reagent in analytical chemistry and research laboratories.

Basic Information

Product Name	Benzenesulfonic Acid Monohydrate
CAS No.	26158-00-9
Molecular Formula	C6H8O4S
Molecular Weight	176.19 g/mol
Synonyms	Benzenesulfonic Acid Hydrate; Benzenesulphonic Acid Monohydrate; Phenylsulfonic Acid Monohydrate; Benzene Sulfonic Acid, Monohydrate; Benzenesulfonic Acid, Hydrated; BSA Monohydrate; Benzenesulphonic Acid Hydrate; ABSA (Acid)
EINECS	Contact for details

Quality Control

Our Benzenesulfonic Acid Monohydrate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is available for every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
Water Content (KF)	9.0 - 11.0 %
Residue on Ignition	≤ 0.1 %
Heavy Metals (as Pb)	≤ 20 ppm

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