Description

3-[Tris(Octyloxy)Silyl]Propanethiol is a specialized organosilicon compound featuring a thiol (-SH) functional group linked via a propyl spacer to a trialkoxysilane head group. This unique bifunctional structure makes it a highly effective coupling agent and surface modifier, capable of forming durable covalent bonds between inorganic substrates and organic polymers. It is essential for industries requiring advanced material performance, such as creating high-strength composites, durable coatings, and functionalized nanoparticles. Key users include R&D scientists and production engineers in the specialty chemicals, advanced materials, and electronics sectors.

Application

• Surface Modification Agent: Used to functionalize silica, glass, metals, and other inorganic surfaces to improve adhesion and compatibility with organic resins and polymers.
• Coupling Agent for Composites: Enhances the interfacial bonding in fiber-reinforced plastics (FRP) and mineral-filled polymer composites, leading to improved mechanical strength and durability.
• Nanoparticle Functionalization: A key reagent for attaching organic ligands to quantum dots, silica nanoparticles, and metal oxides for applications in diagnostics, catalysis, and drug delivery.
• Adhesion Promoter in Coatings: Incorporated into primers and coatings to significantly improve adhesion to difficult substrates like metals and glass, enhancing corrosion resistance and coating longevity.
• Rubber and Elastomer Additive: Acts as a crosslinking aid and reinforcing agent in silicone and other specialty elastomers to modify physical properties.
• Lubricant and Grease Additive: Utilized as an extreme pressure (EP) additive and friction modifier due to the thiol group's ability to form protective films on metal surfaces.
• Intermediate for Chemical Synthesis: Serves as a versatile building block for synthesizing more complex organosilicon molecules with tailored properties.

Basic Information

Product Name	3-[Tris(Octyloxy)Silyl]Propanethiol
CAS No.	94291-66-4
Molecular Formula	C27H58O3SSi
Molecular Weight	490.90 g/mol
Synonyms	3-(Tri-n-octyloxysilyl)-1-propanethiol; (3-Mercaptopropyl)tri-n-octyloxysilane; Trioctyloxy(3-mercaptopropyl)silane; 3-Mercaptopropyltrioctyloxysilane; Propanethiol, 3-[tris(octyloxy)silyl]-; Silane, trioctyloxy(3-mercaptopropyl)-; Octyl SILANE Q3-3083 (common trade name); Thiol-functional trialkoxysilane
EINECS	Contact for details

Quality Control

Our production of 3-[Tris(Octyloxy)Silyl]Propanethiol adheres to strict quality management protocols. Each batch undergoes rigorous analytical testing, including assay by titration or GC, to ensure high chemical purity and consistent performance. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as purity, identity, and specific impurity profiles. Our quality system is designed to meet the demanding requirements of industrial and research applications, ensuring reliable supply and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This compound is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Keep away from strong oxidizing agents, strong acids, and strong bases. Under recommended storage conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Refractive Index (n20/D)	1.450 - 1.460
Density (g/mL, 20°C)	0.90 - 0.95

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