Description

2,3,4-Trimethylbenzenesulfonic Acid is a versatile and highly reactive aromatic sulfonic acid derivative. This compound serves as a crucial building block and catalyst in advanced organic synthesis, valued for its strong acidity and the steric influence of its trimethyl substitution pattern. It is primarily sought after by pharmaceutical intermediates, specialty chemical, and polymer research sectors for constructing complex molecular architectures and facilitating challenging chemical transformations.

Application

• Pharmaceutical Intermediate: A key synthon in the synthesis of active pharmaceutical ingredients (APIs) and complex drug molecules.
• Acid Catalyst: Used as an efficient and selective acid catalyst in esterification, alkylation, and other organic reactions, often as an alternative to mineral acids.
• Polymerization Agent: Employed in the production of specialty polymers, resins, and as a curing agent or catalyst in polymer chemistry.
• Dye and Pigment Manufacturing: Acts as an intermediate in the synthesis of sulfonated dyes and organic pigments.
• Surfactant and Detergent Intermediate: Serves as a precursor for the synthesis of specialized surfactants and emulsifiers.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new synthetic methodologies and material science.
• Electroplating Additives: Used in the formulation of specific electroplating baths and surface treatment solutions.

Basic Information

Product Name	2,3,4-Trimethylbenzenesulfonic Acid
CAS No.	28987-67-9
Molecular Formula	C9H12O3S
Molecular Weight	200.26 g/mol
Synonyms	Pseudocumenesulfonic Acid; 2,3,4-Trimethylbenzenesulphonic Acid; 1,2,3-Trimethyl-4-sulfobenzene; 4-Sulfo-1,2,3-trimethylbenzene; Benzenesulfonic acid, 2,3,4-trimethyl-; Pseudocumene-4-sulfonic Acid; TSA (context-specific)
EINECS	Contact for details

Quality Control

Our 2,3,4-Trimethylbenzenesulfonic Acid is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications such as assay, impurity profile, and physical characteristics are provided and available upon request to support your quality assurance protocols.

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 material is hygroscopic (moisture-sensitive) and a strong acid; ensure containers are kept sealed to exclude moisture and stored separately from bases and reactive materials.

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	Contact for details
Heavy Metals	< 20 ppm

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