Description

2-Nitrobenzenesulfonic Acid is a versatile aromatic sulfonic acid derivative that serves as a critical intermediate in fine chemical synthesis. Its value lies in the reactive nitro and sulfonic acid functional groups, which enable a range of chemical transformations, including reductions and nucleophilic substitutions. This compound is essential for manufacturers in the agrochemical, pharmaceutical, and dye industries seeking to produce complex molecules efficiently.

Application

• Agrochemical Intermediate: Key precursor in the synthesis of herbicides, pesticides, and plant growth regulators.
• Pharmaceutical Synthesis: Used as a building block for active pharmaceutical ingredients (APIs) and other fine chemicals.
• Dye and Pigment Manufacturing: Serves as an intermediate in the production of azo dyes and other colorants.
• Chemical Research & Development: A valuable reagent for exploring new synthetic pathways in academic and industrial R&D labs.
• Corrosion Inhibitor Formulation: Used in certain industrial formulations to protect metal surfaces.
• Electroplating Additive: Employed in specific electroplating baths to modify deposit properties.

Basic Information

Product Name	2-Nitrobenzenesulfonic Acid
CAS No.	80-82-0
Molecular Formula	C6H5NO5S
Molecular Weight	203.17 g/mol
Synonyms	o-Nitrobenzenesulfonic Acid; 2-Nitrobenzene-1-sulfonic Acid; Benzenesulfonic acid, 2-nitro-; Orthonitrobenzenesulfonic Acid; NSC 4032; 2-NBSA; ONBS
EINECS	201-313-7

Quality Control

Our 2-Nitrobenzenesulfonic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. Certificates of Analysis (COA) documenting these results are provided and 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 at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 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.