Description

Cyclopentyltriethoxysilane 98 is a high-purity organosilicon compound, specifically a cyclopentyl-functionalized trialkoxysilane. This product is a critical intermediate and coupling agent valued for its ability to introduce hydrophobic, cyclopentyl-functional groups into inorganic matrices or polymer backbones. It is primarily needed by manufacturers in the advanced materials, specialty coatings, and electronics industries for developing high-performance surface modifiers, adhesion promoters, and hybrid organic-inorganic materials.

Application

• Surface Modification Agent: Used to hydrophobically modify silica, glass, and other metal oxide surfaces, enhancing compatibility with organic polymers.
• Adhesion Promoter: Functions as a coupling agent in sealants, adhesives, and composite materials to improve bonding between organic resins and inorganic substrates.
• Precursor for Hybrid Materials: Serves as a key monomer in sol-gel processes for synthesizing cyclopentyl-functionalized siloxanes and silicone resins with tailored properties.
• Pharmaceutical & Agro-chemical Intermediates: Utilized in the synthesis of active ingredients or functional excipients requiring specific silane linkages.
• Water Repellent Coatings: Imparts water-resistant properties to construction materials, textiles, and stone when used in coating formulations.
• Electronic Encapsulants: Incorporated into silicone-based encapsulating materials for electronic components to provide moisture protection and stability.

Basic Information

Product Name	Cyclopentyltriethoxysilane 98
CAS No.	154733-91-2
Molecular Formula	C11H24O3Si
Molecular Weight	232.40 g/mol
Synonyms	Triethoxy(cyclopentyl)silane; Cyclopentyltriethoxy silane; (Cyclopentyl)triethoxysilane; Silane, triethoxycyclopentyl-; CPTS; Cyclopentylsilanetriol triethyl ether; Cyclopentyltriethoxysilane; Triethoxycyclopentylsilane
EINECS	Contact for details

Quality Control

Our Cyclopentyltriethoxysilane 98 is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets the declared specification of ≥98% purity. A Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, containers must be kept tightly sealed and under an inert atmosphere (e.g., nitrogen) after opening to prevent hydrolysis and maintain product integrity.

Specification

Item	Specification
Appearance	Colorless to pale yellow clear liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 98.0 %
Density (at 20°C)	~0.95 g/mL
Refractive Index (n20/D)	~1.425

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