Description

3,5-Dimethylbenzenesulfonic Acid is a versatile aromatic sulfonic acid derivative, valued for its strong acidity and utility as an intermediate and catalyst in organic synthesis. Its chemical structure makes it an effective reagent for introducing sulfonate groups and for use in acid-catalyzed reactions where controlled acidity is required. This product is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking a reliable and reactive building block.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs) and other drug substances.
• Agrochemical Synthesis: Serves as a key intermediate in the production of herbicides, fungicides, and other crop protection agents.
• Catalyst & Reagent: Employed as an acid catalyst in esterification, alkylation, and other organic transformations.
• Dye & Pigment Manufacturing: Acts as an intermediate in the synthesis of sulfonated dyes and colorants.
• Polymer & Resin Modification: Used to introduce sulfonic acid groups into polymers for ion-exchange or solubility modification.
• Research & Development: A valuable reagent for chemical research in academic and industrial laboratories.

Basic Information

Product Name	3,5-Dimethylbenzenesulfonic Acid
CAS No.	18023-22-8
Molecular Formula	C8H10O3S
Molecular Weight	186.23 g/mol
Synonyms	3,5-Dimethylbenzenesulfonic Acid; 3,5-Xylenesulfonic Acid; m-Xylene-5-sulfonic Acid; 3,5-Dimethylphenylsulfonic Acid; Benzenesulfonic acid, 3,5-dimethyl-; 5-Sulfo-m-xylene; 3,5-Dimethylbenzene-1-sulfonic Acid
EINECS	241-941-6

Quality Control

Our 3,5-Dimethylbenzenesulfonic Acid is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards and consistent performance. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your specifications.

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 tightly sealed to prevent absorption of moisture and contamination.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0 %
Water Content (KF)	≤ 1.0 %
Melting Point	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm

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