Description

Benzyldimethyl[3-(Triethoxysilyl)Propyl]Ammonium Chloride is a versatile organosilicon quaternary ammonium compound that serves as a powerful coupling agent and antimicrobial modifier. Its unique structure combines a reactive triethoxysilyl group with a biocidal quaternary ammonium moiety, enabling durable surface functionalization. This product is essential for manufacturers in the coatings, textiles, plastics, and medical device industries seeking to impart permanent antimicrobial, adhesive, or surface-active properties to their materials.

Application

• Antimicrobial Surface Modification: Covalently bonding to glass, metals, polymers, and textiles to create durable, non-leaching antimicrobial surfaces for medical devices, touchscreens, and hygienic coatings.
• Adhesion Promoter: Enhancing the adhesion of paints, sealants, adhesives, and polymer composites to inorganic substrates like glass, metals, and minerals.
• Fiber and Textile Treatment: Imparting durable antimicrobial, antistatic, or softening properties to natural and synthetic fibers for medical textiles, sportswear, and home furnishings.
• Silane Coupling Agent: Acting as a molecular bridge in mineral-filled plastics, rubber, and composite materials to improve mechanical properties and filler dispersion.
• Paper and Pulp Industry: Used as a biocide and retention aid in papermaking processes to control microbial growth and improve product quality.
• Water Treatment: Functionalizing filtration media or surfaces to inhibit biofilm formation in water treatment systems.

Basic Information

Product Name	Benzyldimethyl[3-(Triethoxysilyl)Propyl]Ammonium Chloride
CAS No.	85391-03-3
Molecular Formula	C18H34ClNO3Si
Molecular Weight	375.99 g/mol
Synonyms	3-(Trimethoxysilyl)propyldimethyloctadecyl ammonium chloride (common misnomer); N-Benzyl-N,N-dimethyl-3-(triethoxysilyl)-1-propanaminium chloride; Silane quaternary ammonium compound; QAS silane; BDTPAC; (3-(Triethoxysilyl)propyl)benzyldimethylammonium chloride; Antimicrobial silane quat; Organosilane quaternary ammonium salt
EINECS	286-848-5

Quality Control

Our Benzyldimethyl[3-(Triethoxysilyl)Propyl]Ammonium Chloride is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with relevant industry specifications. Comprehensive Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request to support your quality assurance protocols.

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 material is hygroscopic (moisture-sensitive) and should be kept under an inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and degradation. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Chloride Content (Titration)	9.0 - 10.0 %
Refractive Index (n20/D)	1.450 - 1.460
Density (20°C)	1.00 - 1.10 g/mL
Water Content (KF)	≤ 0.5%

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