Description

3-Nitrobenzenesulfonic Acid is a versatile aromatic sulfonic acid derivative that serves as a key intermediate in organic synthesis. Its value lies in the combination of a strongly electron-withdrawing nitro group and a reactive sulfonic acid moiety, enabling precise chemical transformations. This compound is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and dye industries seeking to build complex molecular architectures.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the production of herbicides, pesticides, and fungicides, where the nitro and sulfonate groups contribute to biological activity.
• Dye and Pigment Manufacturing: Acts as an intermediate for azo dyes and other colorants, providing structural stability and solubility.
• Chemical Research & Development: Employed in academic and industrial labs for studying electrophilic aromatic substitution and as a precursor for other functionalized benzenes.
• Corrosion Inhibitor Formulation: Used in specialty chemical blends for industrial water treatment and metal surface protection.
• Polymer Modification: Can be used to introduce sulfonate groups into polymers, altering their solubility and ionic properties.

Basic Information

Product Name	3-Nitrobenzenesulfonic Acid
CAS No.	124088-59-1
Molecular Formula	C6H5NO5S
Molecular Weight	203.17 g/mol
Synonyms	m-Nitrobenzenesulfonic Acid; 3-Nitrobenzenesulphonic Acid; Benzenesulfonic acid, 3-nitro-; meta-Nitrobenzenesulfonic Acid; 3-Nitrobenzene-1-sulfonic acid; NSC 403121; 1-Sulfo-3-nitrobenzene
EINECS	Contact for details

Quality Control

Our 3-Nitrobenzenesulfonic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided, documenting key parameters such as assay, impurity profile, and physical characteristics. We adhere to cGMP principles where applicable to support our customers in regulated industries.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent degradation. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	Off-white to pale yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
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.