Description

3-[Tris(Decyloxy)Silyl]Propanethiol is a specialized organosilicon compound featuring a long-chain alkoxy silyl group and a terminal thiol functionality. This unique molecular structure makes it an exceptionally effective coupling agent and surface modifier for enhancing the compatibility and adhesion between inorganic materials and organic polymers. It is primarily utilized in the formulation of advanced composites, high-performance coatings, and specialty adhesives where durable interfacial bonding is critical. Industries such as aerospace, automotive, and electronics rely on this chemical to improve the mechanical properties and longevity of their engineered materials.

Application

• As a silane coupling agent for glass, metal, and mineral fillers in polymer composites (e.g., epoxy, polyurethane).
• Surface modification of nanoparticles (silica, metals) to improve dispersion and stability in organic matrices.
• Key intermediate in the synthesis of functionalized polymers and dendrimers for specialty applications.
• Adhesion promoter in high-performance sealants, adhesives, and protective coatings.
• Modifier for rubber compounds to enhance filler-rubber interaction and mechanical properties.
• Surface treatment agent for pigments and dyes to prevent agglomeration.
• Component in the manufacture of self-assembled monolayers (SAMs) for sensor and microelectronic applications.
• Additive in lubricant formulations to improve surface affinity and reduce wear.

Basic Information

Item	Detail
Product Name	3-[Tris(Decyloxy)Silyl]Propanethiol
CAS No.	93777-94-7
Molecular Formula	C33H70O3SSi
Molecular Weight	575.06 g/mol
Synonyms	3-(Tris(decyloxy)silyl)-1-propanethiol; (3-Mercaptopropyl)tris(decyloxy)silane; Decyloxy Silane Coupling Agent; Tris(decyloxy)(3-mercaptopropyl)silane; Propanethiol, 3-[tris(decyloxy)silyl]-; Silane coupling agent KH-XXXX (analogous); 3-Mercaptopropyltris(decyloxy)silane; Organosilane Thiol
EINECS	Contact for details

Quality Control

Every batch of 3-[Tris(Decyloxy)Silyl]Propanethiol is manufactured under strict quality management protocols. We employ advanced analytical techniques including GC, HPLC, and NMR to ensure product identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment, ensuring full traceability and compliance with your material specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 15-25°C under an inert atmosphere (e.g., nitrogen or argon) due to its easily oxidized and hygroscopic (moisture-sensitive) nature. Keep away from heat, open flames, and strong oxidizing agents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Refractive Index (20°C)	1.450 - 1.460
Density (20°C)	0.88 - 0.92 g/mL

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