Description

Benzenesulfonic Acid, 3-Bromo- is a versatile brominated aromatic sulfonic acid derivative, serving as a key synthetic intermediate in advanced organic chemistry. Its value lies in its dual functional groups, which allow for selective modifications to create complex molecules for high-value applications. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries developing new active ingredients and functional materials.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for molecules requiring a brominated benzene sulfonate moiety.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and other crop protection agents where the sulfonic acid group enhances solubility or biological activity.
• Dye and Pigment Manufacturing: Acts as an intermediate in the creation of sulfonated azo dyes and other colored compounds, providing improved water solubility and fiber affinity.
• Polymer Modification: Employed to introduce sulfonate groups into polymer chains, modifying properties such as hydrophilicity, ion-exchange capacity, or adhesion.
• Chemical Research & Development: Serves as a standard reagent in organic synthesis laboratories for coupling reactions, metal-catalyzed cross-couplings, and structure-activity relationship (SAR) studies.
• Catalyst and Ligand Preparation: Useful for synthesizing specialized ligands for metal complexes or as a precursor for solid acid catalysts.

Basic Information

Product Name	Benzenesulfonic Acid, 3-Bromo-
CAS No.	22033-09-6
Molecular Formula	C6H5BrO3S
Molecular Weight	237.07 g/mol
Synonyms	3-Bromobenzenesulfonic Acid; m-Bromobenzenesulfonic Acid; Benzenesulfonic acid, m-bromo-; 3-Bromophenylsulfonic Acid; 1-Bromo-3-sulfobenzene; 3-Bromo-1-sulfobenzene; m-Bromophenylsulfonic Acid
EINECS	244-734-9

Quality Control

Every batch of Benzenesulfonic Acid, 3-Bromo- is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards and provide comprehensive analytical documentation. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available for all shipments to guarantee traceability and batch-to-batch consistency for your critical processes.

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). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect quality and handling properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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