Description

1-Ethyl-3-Methylimidazolium p-Toluenesulfonate is a high-purity ionic liquid belonging to the imidazolium salt family. This compound is valued for its excellent solvation properties, thermal stability, and role as a versatile reaction medium and catalyst in advanced chemical synthesis. It is primarily sought by R&D laboratories and industrial manufacturers in the chemical, pharmaceutical, and materials science sectors for process optimization and the development of novel materials.

Application

• Green Solvent & Reaction Medium: Used as an alternative to volatile organic compounds (VOCs) in organic synthesis, polymerization, and catalysis.
• Electrolyte Component: Employed in electrochemical applications, including batteries, supercapacitors, and electroplating, due to its ionic conductivity.
• Catalysis & Separation Science: Acts as a catalyst or catalyst support in various organic transformations and as a stationary phase component in chromatography.
• Pharmaceutical Intermediate: Serves as a key reagent or solvent in the synthesis of active pharmaceutical ingredients (APIs) and fine chemicals.
• Material Science: Utilized in the fabrication of advanced polymers, gels, and functionalized surfaces.
• Analytical Chemistry: Applied as a matrix or solvent in mass spectrometry and other analytical techniques.

Basic Information

Product Name	1-Ethyl-3-Methylimidazolium p-Toluenesulfonate
CAS No.	328090-25-1
Molecular Formula	C13H18N2O3S
Molecular Weight	282.36 g/mol
Synonyms	1-Ethyl-3-methylimidazolium tosylate; [EMIM][OTs]; 1-Ethyl-3-methyl-1H-imidazol-3-ium 4-methylbenzenesulfonate; EMIM p-Toluenesulfonate; EMIM Tosylate; Ionic Liquid [EMIM][TOS]; 1-Ethyl-3-methylimidazolium 4-methylbenzenesulfonate
EINECS	Contact for details

Quality Control

Our 1-Ethyl-3-Methylimidazolium p-Toluenesulfonate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and Karl Fischer titration, to ensure it meets high-purity standards for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment.

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). Minimize exposure to air and moisture during handling to maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Halide Content	≤ 100 ppm
Heavy Metals (as Pb)	≤ 10 ppm

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