Description

2,3,5,6-Tetramethylbenzenesulfonic Acid is a highly substituted benzenesulfonic acid derivative, valued for its role as a versatile organic acid catalyst and a key synthetic intermediate. Its sterically hindered structure and strong acidity make it particularly useful in reactions where controlled acidity and specific regioselectivity are required. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries.

Application

• Acid Catalyst in Organic Synthesis: Employed as a strong, non-nucleophilic acid catalyst in esterification, alkylation, and condensation reactions, often preferred for its solubility in organic media.
• Pharmaceutical Intermediate: Serves as a crucial building block in the synthesis of complex drug molecules, particularly where the tetramethylbenzene scaffold is needed.
• Agrochemical Synthesis: Used in the production of advanced herbicides, fungicides, and plant growth regulators.
• Polymerization Catalyst/Co-catalyst: Applied in the production of specialty polymers and resins, including phenolic resins and engineering plastics.
• Dye and Pigment Manufacturing: Acts as an intermediate in the synthesis of sulfonated dyes and high-performance pigments.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic methodologies and material science.

Basic Information

Product Name	2,3,5,6-Tetramethylbenzenesulfonic Acid
CAS No.	69998-58-9
Molecular Formula	C10H14O3S
Molecular Weight	214.28 g/mol
Synonyms	Durenesulfonic Acid; 2,3,5,6-Tetramethylbenzenesulphonic Acid; 1,2,4,5-Tetramethylbenzenesulfonic Acid; Durene-1-sulfonic Acid; Benzenesulfonic acid, 2,3,5,6-tetramethyl-; Tetramethylbenzenesulfonic Acid
EINECS	Contact for details

Quality Control

Every batch of 2,3,5,6-Tetramethylbenzenesulfonic Acid is produced and tested under a strict quality management system. We ensure compliance with relevant industry standards and customer-specific requirements. A comprehensive Certificate of Analysis (COA), detailing purity, identity, and impurity profiles, is provided with each shipment to guarantee consistent quality and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area. Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture. Keep away from strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 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.