Description

Ammonium Toluene-4-Sulphonate is the ammonium salt of p-toluenesulfonic acid, a versatile organic intermediate and reagent. This compound is valued for its role as a phase-transfer catalyst and a mild acid catalyst in various synthetic organic chemistry processes. It is primarily utilized by manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries for applications requiring controlled acidity and solubility.

Application

• Pharmaceutical Synthesis: Acts as a catalyst or intermediate in the production of active pharmaceutical ingredients (APIs).
• Agrochemical Manufacturing: Used in the synthesis of herbicides, fungicides, and other crop protection agents.
• Polymer & Resin Production: Serves as a catalyst in polymerization reactions and in the manufacture of specialty resins.
• Dye & Pigment Intermediates: Employed in the synthesis of sulfonated dyes and organic colorants.
• Phase-Transfer Catalysis (PTC): Facilitates reactions between reagents in immiscible phases, common in fine chemical synthesis.
• Laboratory Reagent: Used as a mild acid catalyst or a source of the tosylate anion in research and development.
• Surfactant & Detergent Precursor: Can be used in the production of certain anionic surfactants.
• Electroplating Additives: Functions as a brightening agent or conductivity salt in specific electroplating formulations.

Basic Information

Product Name	Ammonium Toluene-4-Sulphonate
CAS No.	4124-42-9
Molecular Formula	C7H11NO3S
Molecular Weight	189.23 g/mol
Synonyms	Ammonium p-Toluenesulfonate; Ammonium 4-Methylbenzenesulfonate; p-Toluenesulfonic Acid Ammonium Salt; 4-Methylbenzenesulfonic Acid Ammonium Salt; ATS; Tosic Acid Ammonium Salt; Ammonium Tosylate; Ammonium Toluene-p-Sulfonate
EINECS	223-919-7

Quality Control

Our Ammonium Toluene-4-Sulphonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for industrial and laboratory applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles 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). This product is hygroscopic (moisture-sensitive); therefore, containers must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%
pH (5% solution)	5.0 - 7.0

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