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 nucleophilic substitution and reduction reactions. This compound is essential for manufacturers in the agrochemical, pharmaceutical, and dye industries seeking to produce complex molecules and specialty chemicals.

Application

• Key intermediate in the synthesis of dyes, pigments, and optical brighteners.
• Building block for pharmaceutical active ingredients and agrochemicals.
• Precursor for corrosion inhibitors and specialty surfactants.
• Used in research and development for novel organic synthesis pathways.
• Intermediate in the production of photographic chemicals.
• Starting material for the synthesis of sulfonamide derivatives.

Basic Information

Product Name	2-Nitrobenzenesulfonic Acid
CAS No.	31212-28-9
Molecular Formula	C6H5NO5S
Molecular Weight	203.17 g/mol
Synonyms	o-Nitrobenzenesulfonic Acid; 2-Nitrobenzene-1-sulfonic Acid; Benzenesulfonic acid, 2-nitro-; ortho-Nitrobenzenesulfonic Acid; 2-NBSA; ONBS
EINECS	Contact for details

Quality Control

Our 2-Nitrobenzenesulfonic Acid is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity and identity. Certificates of Analysis (COA) detailing results for assay, impurities, and physical parameters 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 at room temperature (15-25°C). Due to its hygroscopic nature, protect from moisture. Keep away from incompatible materials such as strong bases and reducing agents.

Specification

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