Description

3,5-Dinitro-4-Toluenesulfonic Acid is a specialized aromatic sulfonic acid derivative, valued for its strong acidic properties and role as a versatile synthetic intermediate. This compound is critical for introducing both sulfonic acid and nitro functional groups into target molecules, enabling precise chemical modifications. It is primarily needed by research institutions and industrial manufacturers in the fine chemical, pharmaceutical, and agrochemical sectors for the synthesis of dyes, pigments, and active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediate: A key building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Dye and Pigment Manufacturing: Used in the production of specialized azo dyes and colorants due to its nitro and sulfonic acid groups.
• Agrochemical Synthesis: Serves as a precursor in the development of certain herbicides and plant protection agents.
• Chemical Research & Development: Employed as a reagent in organic synthesis for introducing sulfonate and nitro functionalities.
• Polymer Modification: Can be used to functionalize polymers, altering their solubility and ionic properties.
• Catalyst and Ligand Preparation: Acts as a starting material for synthesizing sulfonated catalysts or ligands.

Basic Information

Product Name	3,5-Dinitro-4-Toluenesulfonic Acid
CAS No.	74543-18-3
Molecular Formula	C7H6N2O7S
Molecular Weight	262.20 g/mol
Synonyms	4-Methyl-3,5-dinitrobenzenesulfonic Acid; 3,5-Dinitro-p-toluenesulfonic Acid; Benzenesulfonic acid, 4-methyl-3,5-dinitro-; DNTSA; 3,5-Dinitro-4-methylbenzenesulfonic Acid; p-Toluenesulfonic acid, 3,5-dinitro-
EINECS	Contact for details

Quality Control

Our 3,5-Dinitro-4-Toluenesulfonic Acid is manufactured under strict quality management systems. Each 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, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong bases, oxidizing agents, and incompatible materials. Due to its strong acid nature, ensure containers are made of compatible materials such as glass or specific plastics.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%

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