Description

3-Nitrobenzenesulfonic Acid Monohydrate is a versatile aromatic sulfonic acid derivative, valued for its strong acidity and utility as a key synthetic intermediate. This compound is essential for introducing both nitro and sulfonic acid functional groups into target molecules, enabling a range of chemical transformations. It is primarily sought by manufacturers in the pharmaceutical, agrochemical, and specialty dye industries for the synthesis of active ingredients and colorants.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring sulfonamide or nitro-aromatic moieties.
• Agrochemical Synthesis: Serves as a key building block for manufacturing herbicides, fungicides, and other crop protection agents.
• Dye and Pigment Manufacturing: Acts as an intermediate in the production of azo dyes and other complex colorants.
• Chemical Research & Development: Employed in organic synthesis laboratories for method development and novel compound creation.
• Corrosion Inhibitor Formulation: Used in certain industrial formulations where its acidic and aromatic properties are beneficial.
• Polymer Modification: Can be used to introduce sulfonic acid groups into polymers, altering their solubility and ionic properties.

Basic Information

Product Name	3-Nitrobenzenesulfonic Acid Monohydrate
CAS No.	79326-96-8
Molecular Formula	C6H5NO5S · H2O
Molecular Weight	221.18 g/mol
Synonyms	m-Nitrobenzenesulfonic Acid Monohydrate; 3-Nitrobenzenesulfonic Acid Hydrate; Benzenesulfonic acid, 3-nitro-, monohydrate; meta-Nitrobenzenesulfonic Acid; 3-Nitrobenzene-1-sulfonic Acid; NSC 403121; 3-NBSA; 3-Nitrobenzenesulphonic Acid
EINECS	Contact for details

Quality Control

Our 3-Nitrobenzenesulfonic Acid Monohydrate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and consistency. Certificates of Analysis (COA) documenting results for assay, impurity profile, and physical characteristics 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 reducing agents. Recommended storage temperature is 15-25°C. Keep the container tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to pale brown crystalline powder
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0%
Water Content (KF)	7.0 - 9.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
Residue on Ignition	≤ 0.1%

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