Description

2,4,6-Trimethylbenzenesulfonic Acid is a versatile and highly reactive organic sulfonic acid derivative. This compound serves as a valuable acid catalyst and key synthetic intermediate in advanced organic synthesis due to its strong acidity and the steric influence of its mesitylene backbone. It is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and specialty chemical sectors seeking efficient and selective reaction pathways.

Application

• Acid Catalyst: Employed as a powerful, non-oxidizing Brønsted acid catalyst in esterification, alkylation, and condensation reactions, often preferred for its solubility in organic media.
• Pharmaceutical Intermediate: A crucial building block for synthesizing active pharmaceutical ingredients (APIs), particularly in creating sulfonamide drugs and other complex molecules.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators where the introduction of a sulfonic acid group is required.
• Dye and Pigment Manufacturing: Acts as a sulfonating agent and intermediate in the synthesis of sulfonated dyes and organic pigments.
• Polymer Industry: Serves as a curing agent for epoxy resins and a monomer or modifier in the production of ion-exchange resins and specialty polymers.
• Research & Development: A valuable reagent in academic and industrial R&D for method development and exploring new synthetic routes.
• Electroplating Additives: Used in plating baths as a brightening agent and conductivity enhancer.
• Surfactant Precursor: Intermediate for the synthesis of specialized anionic surfactants with unique branching properties.

Basic Information

Product Name	2,4,6-Trimethylbenzenesulfonic Acid
CAS No.	3453-83-6
Molecular Formula	C9H12O3S
Molecular Weight	200.26 g/mol
Synonyms	Mesitylenesulfonic Acid; 2,4,6-Trimethylbenzenesulphonic Acid; Mesitylsulfonic Acid; 2,4,6-Trimethylphenylsulfonic Acid; Toluene-2,4,6-trisulfonic Acid (incorrect but common alias); Benzenesulfonic acid, 2,4,6-trimethyl-; 2,4,6-TMSA
EINECS	222-387-5

Quality Control

Our 2,4,6-Trimethylbenzenesulfonic Acid is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and physical properties. Our quality commitment supports applications requiring reliable and traceable raw materials.

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). This product is hygroscopic (moisture-sensitive) and a strong acid/organic solvent; ensure containers are kept tightly sealed to exclude moisture and incompatible materials. Keep away from heat, sparks, open flames, and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Melting Point	95 - 105 °C
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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