Description

4-Nitrotoluene-2-Sulfonic Acid is a key aromatic sulfonic acid derivative, primarily serving as a versatile chemical intermediate in organic synthesis. Its value lies in the strategic positioning of its nitro and sulfonic acid functional groups, which enable a range of subsequent chemical transformations. This compound is essential for manufacturers in the dye, pigment, and pharmaceutical industries, where it is used to build more complex molecular structures.

Application

• Dye and Pigment Intermediate: A crucial building block in the synthesis of azo dyes, acid dyes, and other colorants.
• Pharmaceutical Synthesis: Used as a precursor in the manufacture of certain active pharmaceutical ingredients (APIs) and fine chemicals.
• Chemical Research & Development: Employed in organic chemistry labs for the development of new synthetic methodologies and compounds.
• Surfactant and Detergent Industry: Can be utilized to produce specialized surfactants due to its sulfonic acid group.
• Photographic Chemicals: Finds application in the production of certain light-sensitive chemicals.
• Corrosion Inhibitor Precursor: Serves as a starting material for synthesizing specific industrial corrosion inhibitors.

Basic Information

Product Name	4-Nitrotoluene-2-Sulfonic Acid
CAS No.	121-03-9
Molecular Formula	C7H7NO5S
Molecular Weight	217.20 g/mol
Synonyms	2-Methyl-5-nitrobenzenesulfonic acid; 5-Nitro-o-toluenesulfonic acid; 4-Nitro-2-methylbenzenesulfonic acid; p-Nitrotoluene-o-sulfonic acid; 2-Methyl-5-nitrobenzene-1-sulfonic acid; 5-Nitro-2-toluenesulfonic acid; 4-Nitrotoluene-2-sulphonic acid; 121-03-9
EINECS	204-439-5

Quality Control

Our production of 4-Nitrotoluene-2-Sulfonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability. Each lot is analyzed against comprehensive specifications, including purity (Assay), identity confirmation, and impurity profiling. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area away from incompatible materials such as strong bases and reducing agents. Recommended storage temperature is 15-25°C. The product is hygroscopic (moisture-sensitive); ensure containers are kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Light yellow to beige crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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