Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride

CAS 27668-52-6[(CH3O)3Si(CH2)3N(CH3)2(CH2)17CH3]ClChemical Synthesis

Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (CAS: 27668-52-6), with formula [(CH3O)3Si(CH2)3N(CH3)2(CH2)17CH3]Cl and a molecular weight of 496.28 g/mol, is a quaternary ammonium silane. This compound functions as a surface modifier and coupling agent. It finds applications in materials science, chemical synthesis, and in the preparation of self-assembly materials, contributing to advancements in micro/nanoelectronics and contact printing technologies.

IUPAC: DMOAP

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Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride ([(CH3O)3Si(CH2)3N(CH3)2(CH2)17CH3]Cl) — chemical structure, CAS 27668-52-6; Chemistry, fine chemical supplied by Tech Serve Solutions

Ammonium SaltsChemical SynthesisMaterials ScienceMicro/NanoElectronicsPhase Transfer CatalystsSelf-Assembly MaterialsSilanesSynthetic Reagents More...

01 /Applications

Surface Modification

This silane is utilised to modify the surface properties of various substrates, introducing positive charges and facilitating the formation of self-assembled monolayers. This is crucial for controlling adhesion and interfacial properties in microelectronic devices.

Chemical Synthesis

As a synthetic reagent, it can be incorporated into more complex molecules or polymers. Its dual functionality, with both silane and quaternary ammonium groups, allows for versatile chemical transformations and the creation of novel materials.

Materials Science

Its ability to form ordered structures makes it valuable in developing advanced materials, including those used in nanotechnology and for specific surface functionalities. The compound aids in creating materials with tailored performance characteristics.

Phase Transfer Catalysis

The quaternary ammonium moiety suggests potential utility as a phase transfer catalyst, enabling reactions between reactants in different immiscible phases. This can enhance reaction rates and yields in organic synthesis.

02 /Properties

Molecular weight	496.28
Linear formula	[(CH3O)3Si(CH2)3N(CH3)2(CH2)17CH3]Cl
Assay	~50% (AT)
Density	0.89 g/mL at 20 °C(lit.)
Refractive index	n20/D 1.3889
Concentration	42 wt. % in methanol
Impurities tested	8 wt. % (3-chloropropyl)trimethoxysilane

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

GHS hazard pictogram: Corrosive (GHS05) — Corrosive

GHS hazard pictogram: Toxic (GHS06) — Toxic

GHS hazard pictogram: Health hazard (GHS08) — Health hazard

Danger

Hazard statements

H226Flammable liquid and vapour
H302Harmful if swallowed
H311Toxic in contact with skin
H314Causes severe skin burns and eye damage
H370Causes damage to organs

Precautionary statements

P210Keep away from heat, sparks and open flames. No smoking
P260Do not breathe dust, fume, gas, mist, vapours or spray
P280Wear protective gloves, clothing and eye/face protection
P301IF SWALLOWED
P305IF IN EYES
P311Call a POISON CENTER or doctor

Protective equipment	Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	33 °C / 91.4 °F
Transport (UN / ADR)	UN 1993C 3 / PGIII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	T
Risk statements (R)	10-23/24/25-36/38-39/23/24/25
Safety statements (S)	26-36/37-45

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

27668-52-6

MDL number

MFCD00054224

PubChem substance

24867252

Beilstein registry

4897339

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride used for?

This compound is primarily used for surface modification, in chemical synthesis, and in materials science, particularly for creating self-assembled monolayers and in micro/nanoelectronics applications.

What are the CAS number and formula for this chemical?

The CAS number is 27668-52-6, and its chemical formula is [(CH3O)3Si(CH2)3N(CH3)2(CH2)17CH3]Cl.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies this chemical with an assay of approximately 50% (AT) in methanol, containing approximately 8 wt. % of (3-chloropropyl)trimethoxysilane as an impurity. We do not represent this product as USP, BP, or EP grade.

How should Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride be handled?

This compound is classified as Danger due to flammability and toxicity. It is harmful if swallowed, toxic in contact with skin and if inhaled, and causes severe skin burns and eye damage. Appropriate personal protective equipment, including gloves, eye protection, and respiratory protection, must be used. Handle in a well-ventilated area, away from ignition sources.

How is this chemical packed, shipped, and exported?

Tech Serve Solutions adheres to strict international shipping regulations for hazardous materials. The product is shipped according to UN 1993C 3 / PGIII classification, ensuring safe and compliant transport globally.

How can I request a sample or quote for this product?

To request a sample or a quotation, please contact our sales team through the website or by phone. Provide the product name and CAS number (27668-52-6) for prompt service.