Description

Methyltrioctadecylammonium Bromide is a high-purity quaternary ammonium salt with a long-chain alkyl structure, serving as a highly effective cationic surfactant and phase-transfer catalyst. Its primary value lies in its ability to facilitate reactions between reagents in immiscible phases and to modify surface properties, making it indispensable for specialized chemical synthesis and material science. This compound is critically needed by manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors, where precise interfacial control and catalytic efficiency are paramount for product development and process optimization.

Application

• Phase-Transfer Catalyst (PTC): Enables and accelerates reactions between ionic reagents in aqueous phases and organic substrates in non-polar solvents.
• Surfactant & Emulsifier: Used in the formulation of specialty emulsions, dispersions, and coatings due to its cationic nature and long hydrophobic chains.
• Antistatic Agent: Imparts antistatic properties to polymers and synthetic fibers during processing.
• Fabric Softener & Conditioner: Acts as a key cationic active ingredient in industrial textile softening and conditioning formulations.
• Biocide & Disinfectant Intermediate: Serves as a precursor or active component in the synthesis of quaternary ammonium compound-based antimicrobial agents.
• Nanomaterial Synthesis: Employed as a structure-directing agent or stabilizer in the preparation of nanoparticles and mesoporous materials.
• Analytical Chemistry: Used in ion-pair chromatography and as an ion-pairing reagent for the separation and analysis of anionic species.
• Oilfield Chemicals: Functions as a clay stabilizer and corrosion inhibitor in drilling and completion fluids.

Basic Information

Product Name	Methyltrioctadecylammonium Bromide
CAS No.	18262-86-7
Molecular Formula	C₅₅H₁₁₄BrN
Molecular Weight	865.51 g/mol
Synonyms	Methyltrioctadecylammonium bromide; TOMAB; Trioctadecylmethylammonium bromide; N-Methyl-N,N,N-trioctadecylammonium bromide; Arquad® 18-50; Adogen® 464; Ammonium, methyltrioctadecyl-, bromide; 1-Octadecanaminium, N-methyl-N,N-dioctadecyl-, bromide
EINECS	242-167-1

Quality Control

Our Methyltrioctadecylammonium Bromide is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. A comprehensive Certificate of Analysis (COA) detailing results for assay, moisture content, and related impurities is provided with every shipment to guarantee batch-to-batch consistency and traceability for our global B2B clients.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	White to off-white powder or flakes
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Loss on Drying	≤ 2.0 %
Residue on Ignition	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm

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