
3-Mercaptopropyltriethoxysilane
Chemical Name: | 3-Mercaptopropyltriethoxysilane |
Product Category: | Mercapto silanes | Silane Coupling Agent |
Structural Formula: | ![]() |
CAS No.: | 14814-09-6 |
EINECS: | 238-883-1 |
Molecular Formula: | C₉H₂₂O₃SSi |
Molecular Weight: | 238.42 g/mol |
Appearance: | Colorless to Almost colorless |
3-Mercaptopropyltriethoxysilane Description
3-Mercaptopropyltriethoxysilane (CAS 14814-09-6) is a highly efficient silane coupling agent with extensive applications in rubber manufacturing, polymer modification, and surface treatments. It enhances mechanical properties, improves adhesion, and increases chemical resistance in various formulations.
Chemical Name | 3-Mercaptopropyltriethoxysilane |
Synonyms | γ-Mercaptopropyltrimethoxysilane, 3-Mercaptopropyltrimethoxysilane |
Boiling Point | 210°C |
Density | 0.987 g/mL at 20°C |
Flash Point | 88°C |
Refractive Index | 1.4331 at 25°C |
Solubility | Hydrolyzes slowly in water; soluble in alcohols, ketones, aliphatic and aromatic hydrocarbons |
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3-Mercaptopropyltriethoxysilane: Guide
3-Mercaptopropyltriethoxysilane (CAS 14814-09-6) is a bifunctional organosilane with a mercapto (-SH) and a triethoxysilyl (-Si(OCH₂CH₃)₃) group. It enhances adhesion between organic and inorganic materials, making it a valuable coupling agent.
Applications:
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Rubber & Tires: Improves silica dispersion, adhesion, and durability.
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Adhesives & Sealants: Enhances bonding strength and flexibility.
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Surface Treatment: Modifies inorganic surfaces for better compatibility.
Widely used in rubber, coatings, and adhesives, it enhances durability, adhesion, and processing efficiency.