Description

Sulfonium, (Ethylmethyl)Octadecyl-, Iodide is a high-purity quaternary ammonium salt analog, specifically a sulfonium salt, characterized by its long alkyl chain. This compound is valued for its potent cationic surfactant properties and its role as a phase-transfer catalyst in specialized organic synthesis. It is primarily sought by manufacturers in the chemical synthesis, specialty materials, and pharmaceutical intermediate sectors for applications requiring efficient phase-transfer or surface-modification agents.

Application

• Phase-Transfer Catalyst (PTC): Facilitates reactions between reagents in immiscible phases, crucial for alkylation, esterification, and displacement reactions in fine chemical synthesis.
• Surfactant & Emulsifier: Acts as a cationic surfactant in the formulation of specialty detergents, fabric softeners, and emulsion stabilizers due to its long hydrophobic tail.
• Antistatic Agent: Used in polymer processing and coatings to impart antistatic properties to plastics and synthetic fibers.
• Biocide & Disinfectant Intermediate: Serves as a precursor or active component in the synthesis of quaternary ammonium compound (QAC)-type biocides for industrial and institutional applications.
• Corrosion Inhibitor: Employed in formulations for metalworking fluids and industrial cooling water systems.
• Organic Synthesis Building Block: Utilized in the preparation of other functionalized sulfonium salts or as an alkylating agent in research and development.

Basic Information

Product Name	Sulfonium, (Ethylmethyl)Octadecyl-, Iodide
CAS No.	29676-50-4
Molecular Formula	C₂₁H₄₅IS
Molecular Weight	480.56 g/mol
Synonyms	Octadecylethylmethylsulfonium Iodide; Ethylmethyloctadecylsulfonium Iodide; N-Octadecylethylmethylsulfonium Iodide; 1-Octadecanaminium, N-ethyl-N-methyl-, iodide (9CI); (Ethylmethyl)(octadecyl)sulfanium iodide; Stearylethylmethylsulfonium Iodide; C18 Sulfonium Salt; Long-chain alkyl sulfonium salt
EINECS	Contact for details

Quality Control

Our Sulfonium, (Ethylmethyl)Octadecyl-, Iodide is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A Certificate of Analysis (COA) detailing specifications such as assay, melting point, and impurity profiles is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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