Description

2-Nitro-p-Toluenesulfonic Acid is a specialized aromatic sulfonic acid derivative, valued for its dual functionality as both a strong acid and a versatile synthetic intermediate. Its molecular structure makes it a critical reagent for introducing sulfonic acid and nitro groups in complex organic synthesis, enabling precise chemical modifications. This compound is essential for manufacturers and R&D laboratories in the fine chemical, pharmaceutical, and agrochemical sectors seeking to develop advanced intermediates, dyes, and functional materials.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs) and other complex organic molecules.
• Dye and Pigment Manufacturing: Used as a precursor and sulfonating agent in the production of azo dyes and other colorants.
• Agrochemical Synthesis: Serves as an intermediate in the creation of herbicides, fungicides, and other crop protection agents.
• Polymer and Resin Modification: Acts as a functional monomer or cross-linking agent to impart specific properties like solubility or reactivity to polymers.
• Chemical Research & Development: A valuable reagent for academic and industrial research in organic synthesis and process chemistry.
• Catalyst and Ligand Preparation: Utilized in the preparation of specialized catalysts and ligands for metal-complex chemistry.

Basic Information

Product Name	2-Nitro-p-Toluenesulfonic Acid
CAS No.	65542-35-0
Molecular Formula	C7H7NO5S
Molecular Weight	217.20 g/mol
Synonyms	4-Methyl-2-nitrobenzenesulfonic Acid; p-Toluenesulfonic Acid, 2-Nitro-; 2-Nitro-4-methylbenzenesulfonic Acid; 2-Nitro-p-toluenesulfonic Acid; Benzenesulfonic acid, 4-methyl-2-nitro-; 2-Nitro-4-toluenesulfonic Acid; 4-Methyl-2-nitrobenzene-1-sulfonic Acid
EINECS	Contact for details

Quality Control

Our 2-Nitro-p-Toluenesulfonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets precise specifications for industrial and research applications. Certificates of Analysis (COA) documenting purity, physical properties, and test results are provided with every shipment to guarantee traceability and consistency.

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) and should be kept under dry conditions to prevent degradation. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	Off-white to pale yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Sulfated Ash	≤ 0.1%

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