Description

2,5-Dimethylbenzenesulfonic Acid Dihydrate is a versatile organic sulfonic acid derivative, valued for its strong acidity and solubility in organic media. This compound serves as a crucial intermediate and catalyst in fine chemical synthesis, offering a stable and easily handled alternative to other sulfonic acids. It is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking reliable building blocks for complex molecules.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs) and fine chemicals.
• Catalyst & Reagent: Used as an acid catalyst in organic synthesis reactions, including esterification, alkylation, and condensation.
• Agrochemical Synthesis: Intermediate in the production of herbicides, fungicides, and other crop protection agents.
• Dye & Pigment Manufacturing: Employed in the synthesis of sulfonated dyes and colorants.
• Polymer Modification: Acts as a sulfonating agent to introduce sulfonic acid groups into polymers for ion-exchange resins or specialty materials.
• Research & Development: Valuable reagent in academic and industrial R&D labs for method development and novel compound synthesis.

Basic Information

Product Name	2,5-Dimethylbenzenesulfonic Acid Dihydrate
CAS No.	609-54-1
Molecular Formula	C8H10O3S · 2H2O
Molecular Weight	222.24 g/mol
Synonyms	2,5-Xylenesulfonic Acid Dihydrate; p-Xylenesulfonic Acid Dihydrate (isomeric mixture); 2,5-Dimethylbenzenesulphonic Acid Dihydrate; 1,4-Dimethyl-2-sulfobenzene Dihydrate; 2,5-DMB-SA Dihydrate; 2,5-Dimethylphenylsulfonic Acid Dihydrate; 2,5-Dimethylbenzene-1-sulfonic Acid Dihydrate
EINECS	210-186-8

Quality Control

Our 2,5-Dimethylbenzenesulfonic Acid Dihydrate is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets the high standards required for industrial and research applications. Certificates of Analysis (COA) documenting purity, identity, and other critical parameters are 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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (Titration)	≥ 98.0 %
Water Content (KF)	15.0 - 17.0 %
Melting Point	90 - 95 °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.