Description

4-Bromobenzenesulphonic Acid is a versatile brominated aromatic sulfonic acid derivative, serving as a key synthetic intermediate in advanced organic chemistry. Its value lies in providing a reactive bromine substituent and a strongly acidic sulfonic acid group, enabling precise molecular modifications and functionalization. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, where it is used to build complex molecules for active ingredients and high-performance materials.

Application

• Pharmaceutical Intermediate: Crucial for the synthesis of active pharmaceutical ingredients (APIs), particularly in creating sulfonamide-based drugs and other bioactive molecules.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and pesticides, where the bromine and sulfonic acid groups contribute to biological activity.
• Dye and Pigment Manufacturing: Acts as a precursor or intermediate in the synthesis of brominated dyes, pigments, and colorants.
• Polymer and Material Science: Employed to introduce sulfonic acid functionality into polymers for ion-exchange resins, conductive materials, or surfactants.
• Chemical Research & Development: A valuable building block in organic synthesis for coupling reactions (e.g., Suzuki, Heck) and further derivatization.
• Catalyst and Ligand Preparation: Used to synthesize specialized ligands or organocatalysts containing both bromo and sulfonate groups.

Basic Information

Item	Detail
Product Name	4-Bromobenzenesulphonic Acid
CAS No.	79326-93-5
Molecular Formula	C6H5BrO3S
Molecular Weight	237.07 g/mol
Synonyms	p-Bromobenzenesulfonic Acid; 4-Bromobenzenesulfonic Acid; Benzenesulfonic acid, 4-bromo-; p-Bromophenylsulfonic Acid; 4-Bromophenylsulfonic Acid; 1-Bromo-4-sulfobenzene; Bromobenzene-4-sulfonic Acid
EINECS	Contact for details

Quality Control

Our 4-Bromobenzenesulphonic Acid is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing, including assay (HPLC), identification (IR, NMR), and impurity profiling, to ensure it meets the high standards required for research and industrial synthesis. A Certificate of Analysis (COA) detailing purity, physical characteristics, and test results is provided with every 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 and strong acid properties, the container must be kept tightly sealed to prevent absorption of atmospheric moisture and degradation. 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 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.