Description

Toluene-α-Sulphonic Acid is a versatile aromatic sulfonic acid derivative, primarily valued as a strong organic acid catalyst and a key intermediate in fine chemical synthesis. Its significance lies in its ability to facilitate a wide range of organic reactions, including esterification and alkylation, often offering advantages in selectivity and reaction conditions. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking reliable and efficient synthetic building blocks.

Application

• Pharmaceutical Intermediate: A crucial building block in the synthesis of active pharmaceutical ingredients (APIs) and other drug substances.
• Catalyst in Organic Synthesis: Used as an acid catalyst for esterification, condensation, and alkylation reactions in fine chemical production.
• Agrochemical Manufacturing: Serves as a key precursor in the production of herbicides, pesticides, and plant growth regulators.
• Dye and Pigment Production: Employed in the synthesis of various azo dyes and other colorants.
• Polymer Industry: Acts as a curing agent or cross-linking agent in certain resin and polymer formulations.
• Research & Development: Utilized in laboratory-scale organic synthesis for method development and novel compound creation.

Basic Information

Product Name	Toluene-α-Sulphonic Acid
CAS No.	100-87-8
Molecular Formula	C7H8O3S
Molecular Weight	172.20 g/mol
Synonyms	2-Methylbenzenesulfonic Acid; o-Toluenesulfonic Acid; ortho-Toluenesulfonic Acid; Toluene-2-sulfonic Acid; 2-Toluenesulfonic Acid; Benzenesulfonic acid, 2-methyl-; Tosic Acid (o-isomer); OTSA
EINECS	202-898-5

Quality Control

Our Toluene-α-Sulphonic Acid is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, 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 are stored separately from bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (Titration)	≥ 98.0 %
Water Content (KF)	≤ 1.0 %
Sulfated Ash	≤ 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.