Description

n-Trimethoxysilylpropyl-N,N,n-Trimethylammonium Chloride is a quaternary ammonium-functional silane coupling agent, a key chemical for imparting permanent cationic functionality and enhanced adhesion to surfaces. This compound is essential for modifying material interfaces, offering improved compatibility, durability, and performance in demanding environments. It is primarily sought by manufacturers in the textile, personal care, and specialty polymer industries for its unique dual functionality.

Application

• Textile Finishing: As a durable antimicrobial and softening agent for cotton, polyester, and blended fabrics.
• Hair Care Products: Key ingredient in conditioning shampoos and treatments to provide cationic charge for superior hair manageability and shine.
• Surface Modification: To create positively charged, hydrophilic surfaces on glass, silica, and minerals for improved coating adhesion and dispersion.
• Antimicrobial Coatings: For developing long-lasting biocidal surfaces on medical devices, filters, and building materials.
• Paper Chemicals: Used as a retention aid and dry-strength agent in paper manufacturing processes.
• Composite Materials: As a coupling agent in fiberglass-reinforced plastics and mineral-filled polymers to enhance mechanical properties.
• Chromatography Media: For functionalizing silica gel to create stationary phases for ion-exchange chromatography.

Basic Information

Product Name	n-Trimethoxysilylpropyl-N,N,n-Trimethylammonium Chloride
CAS No.	35141-36-7
Molecular Formula	C9H24ClNO3Si
Molecular Weight	257.83 g/mol
Synonyms	(3-Trimethoxysilylpropyl)trimethylammonium chloride; Trimethyl[3-(trimethoxysilyl)propyl]ammonium chloride; N-Trimethoxysilylpropyl-N,N,N-trimethylammonium chloride; N-Trimethyl-N-(3-trimethoxysilylpropyl)ammonium chloride; 3-(Trimethoxysilyl)propyltrimethylammonium chloride; Silane quaternary ammonium salt; TMSQ; Quat silane; Z-6011 (Dow Corning trade name equivalent); A-1126 (Momentive trade name equivalent)
EINECS	Contact for details

Quality Control

Our n-Trimethoxysilylpropyl-N,N,n-Trimethylammonium Chloride is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including assay, identity confirmation, and impurity profiling, to ensure it meets precise specifications for industrial and personal care applications. A Certificate of Analysis (COA) documenting purity, appearance, and key physical-chemical parameters is provided with each shipment.

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). Keep the container tightly sealed under an inert atmosphere (nitrogen) to prevent moisture absorption and hydrolysis. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (by Titration)	≥ 40.0% in Methanol
Active Content (as Quat)	≥ 95.0%
Chloride Content	Conforms
Density (25°C)	1.00 - 1.10 g/cm³
Refractive Index (n20D)	1.410 - 1.420

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