Description

Toluenedisulphonic Acid CAS NO 27157-73-9 is a versatile and industrially significant aromatic sulfonic acid derivative. This compound serves as a critical intermediate and catalyst in numerous high-value chemical synthesis processes. It is essential for manufacturers in the agrochemical, pharmaceutical, and specialty polymer industries seeking reliable, high-purity raw materials for complex production.

Application

• Chemical Synthesis Intermediate: A key building block for dyes, pigments, and optical brighteners.
• Catalyst & Acidulant: Used as an efficient acid catalyst in esterification, alkylation, and resin curing reactions.
• Pharmaceutical Manufacturing: Employed in the synthesis of certain active pharmaceutical ingredients (APIs) and fine chemicals.
• Agrochemical Production: Integral to the manufacture of herbicides, pesticides, and plant growth regulators.
• Polymer & Resin Industry: Functions as a curing agent for epoxy resins and a monomer for ion-exchange resins.
• Electroplating & Surface Treatment: Used in electroplating baths and as a component in metal surface treatment formulations.

Basic Information

Product Name	Toluenedisulphonic Acid
CAS No.	27157-73-9
Molecular Formula	C7H8O6S2
Molecular Weight	252.26 g/mol
Synonyms	Toluene-2,4-disulfonic Acid; 2,4-Disulfotoluene; Toluene-2,4-disulphonic Acid; 2,4-Toluenedisulfonic Acid; 4-Methyl-1,3-benzenedisulfonic Acid; Toluene-2,4-diyldisulfonic Acid; Toluenedisulfonic Acid (mixed isomers); TDS Acid
EINECS	Contact for details

Quality Control

Our Toluenedisulphonic Acid is produced under stringent quality management systems. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, identity, and performance. Certificates of Analysis (COA) documenting key 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
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Sulfated Ash	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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