Description

2,4-Dinitrobenzenesulfonic Acid is a versatile and highly reactive aromatic sulfonic acid derivative, distinguished by its two nitro substituents. This compound is a critical intermediate in fine chemical synthesis, valued for its strong electrophilic character and ability to act as a sulfonating agent. It is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries who require a high-purity building block for complex organic transformations.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for sulfonamide-based drugs.
• Agrochemical Synthesis: Used in the production of herbicides, pesticides, and plant growth regulators.
• Dye and Pigment Manufacturing: Serves as a crucial intermediate for creating sulfonated azo dyes and other complex colorants.
• Crosslinking Agent: Employed in polymer chemistry to introduce sulfonic acid groups, modifying polymer properties.
• Chemical Research & Development: A valuable reagent for organic synthesis, including electrophilic aromatic substitution and functional group transformations.
• Catalyst and Co-catalyst Preparation: Used in the preparation of solid acid catalysts and ionic liquids.

Basic Information

Product Name	2,4-Dinitrobenzenesulfonic Acid
CAS No.	89-02-1
Molecular Formula	C6H4N2O7S
Molecular Weight	248.17 g/mol
Synonyms	2,4-Dinitrobenzenesulphonic Acid; 2,4-Dinitrophenylsulfonic Acid; Benzenesulfonic acid, 2,4-dinitro-; DNBS; DNBSA; 2,4-Dinitrobenzene-1-sulfonic Acid; 2,4-Dinitrobenzenesulfonate; 2,4-Dinitrophenylsulphonic Acid
EINECS	201-873-3

Quality Control

Our 2,4-Dinitrobenzenesulfonic Acid is manufactured under strict quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements of our industrial and research clients. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and compliance.

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. Due to its nature as a strong acid, ensure containers are kept upright and clearly labeled.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
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.