Description

Sodium p-Toluenesulfonate is the sodium salt of p-toluenesulfonic acid, a versatile organic intermediate and functional chemical. This compound is valued for its role as a phase-transfer catalyst, a hydrotropic agent, and a key building block in organic synthesis. It is essential for manufacturers and R&D facilities in the pharmaceutical, agrochemical, dye, and polymer industries seeking reliable synthesis and processing aids.

Application

• As a phase-transfer catalyst (PTC) in organic synthesis reactions, facilitating reactions between reagents in immiscible phases.
• Utilized as a hydrotropic agent to increase the aqueous solubility of poorly soluble organic compounds.
• An important intermediate in the production of dyes, pigments, and optical brighteners.
• Used in the synthesis of certain pharmaceutical active ingredients and agrochemicals.
• Acts as a dispersant and emulsifier in various industrial formulations.
• Employed in electroplating baths and other electrochemical processes.
• Can serve as a stabilizer or additive in polymer and resin production.

Basic Information

Product Name	Sodium p-Toluenesulfonate
CAS No.	12068-03-0
Molecular Formula	C7H7NaO3S
Molecular Weight	194.18 g/mol
Synonyms	4-Methylbenzenesulfonic acid sodium salt; Sodium 4-methylbenzenesulfonate; Sodium tosylate; p-Toluenesulfonic acid sodium salt; Tosic acid sodium salt; Toluenesulfonic acid sodium salt; Sodium toluenesulfonate; 4-Toluenesulfonic acid sodium salt
EINECS	235-091-1

Quality Control

Our Sodium p-Toluenesulfonate is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets defined specifications for purity, identity, and physical properties. We provide comprehensive Certificates of Analysis (COA) with every shipment, detailing key parameters such as assay, loss on drying, and heavy metal content 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 material is hygroscopic (moisture-sensitive); ensure containers are kept sealed to prevent absorption of atmospheric moisture.

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
Sulfate (SO4)	≤ 0.1%

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