Description

Sodium p-Toluenesulfonate is a versatile organic salt widely used as an intermediate and additive in industrial synthesis. Its primary value lies in its role as a phase-transfer catalyst and a hydrotropic agent, enhancing the solubility of organic compounds in aqueous systems. This makes it a critical material for manufacturers in the pharmaceutical, agrochemical, and specialty chemical sectors seeking efficient process chemistry solutions.

Application

• As a phase-transfer catalyst (PTC) in organic synthesis reactions, facilitating the migration of reactants between immiscible phases.
• As a hydrotropic agent to increase the aqueous solubility of poorly soluble organic compounds in formulations.
• Key intermediate in the production of dyes, pigments, and optical brighteners.
• Used in the synthesis of certain pharmaceutical active ingredients and agrochemicals.
• As an additive in electroplating baths and other electrochemical processes.
• Employed in polymerization processes and as a component in specialty surfactant systems.
• Potential use as a porogen or template agent in the preparation of porous materials.

Basic Information

Product Name	Sodium p-Toluenesulfonate
CAS No.	657-84-1
Molecular Formula	C7H7NaO3S
Molecular Weight	194.18 g/mol
Synonyms	Sodium Tosylate; Sodium 4-Methylbenzenesulfonate; p-Toluenesulfonic Acid Sodium Salt; Tosic Acid Sodium Salt; 4-Toluenesulfonic Acid Sodium Salt; Sodium p-Tosylate; Toluenesulfonic Acid Sodium Salt; Sodium Toluenesulfonate
EINECS	211-522-5

Quality Control

Our Sodium p-Toluenesulfonate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. Certificates of Analysis (COA) documenting purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory compliance needs.

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 nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can lead to caking or reduced efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
pH (5% solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents	Meets ICH guidelines

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