(3-Mercaptopropyl)triethoxysilane
(3-Mercaptopropyl)triethoxysilane (CAS: 14814-09-6), with the molecular formula HS(CH2)3Si(OCH2CH3)3 and a molecular weight of 238.42, is an organosilicon compound. It features a thiol functional group and triethoxysilane moiety, making it a valuable bifunctional molecule. Primarily used in chemical synthesis and material science, it acts as a coupling agent, surface modifier, and cross-linking agent, enhancing adhesion and compatibility between organic and inorganic materials.
- IUPAC
- 3-Triethoxysilyl-1-propanethiol
- Synonyms
- 3-Triethoxysilyl-1-propanethiol
Surface Modification
Utilised to modify the surface properties of inorganic materials, such as silica and glass, by covalently bonding through the ethoxysilane groups, leaving the thiol group available for further reactions. This enhances compatibility with organic polymers and functionalisation.
Coupling Agent
Acts as a coupling agent to improve adhesion between inorganic fillers (e.g., silica) and organic polymer matrices in composites. The thiol group can react with polymer chains, while the silane end bonds to the filler surface.
Cross-linking Agent
Serves as a cross-linking agent in silicone-based polymers and resins. The thiol group can participate in various cross-linking chemistries, contributing to the formation of three-dimensional networks.
Synthesis Intermediate
Employed as an intermediate in the synthesis of more complex organosilicon compounds and functionalised materials for diverse applications in electronics, coatings, and adhesives.
| Molecular weight | 238.42 |
|---|---|
| Linear formula | HS(CH2)3Si(OCH2CH3)3 |
| Assay | ≥80% (GC) |
| Grade | technical |
| Density | 0.987 g/mL at 20 °C(lit.) |
| Storage temperature | 2-8°C |
Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 88 °C / 190.4 °F |
| Transport (UN / ADR) | UN 3334 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is (3-Mercaptopropyl)triethoxysilane primarily used for?
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This compound is primarily used in chemical synthesis, particularly as a surface modifier, coupling agent, and cross-linking agent in material science applications, enhancing adhesion and compatibility between organic and inorganic materials.
What are the CAS number and molecular formula for this silane?
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The CAS number is 14814-09-6, and the molecular formula is HS(CH2)3Si(OCH2CH3)3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound in a technical grade with an assay of ≥80% (GC). We do not represent it as USP, BP, or EP grade.
What are the main safety concerns when handling this chemical?
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This compound is a Warning substance that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields and gloves, should be worn. Ensure adequate ventilation and avoid breathing vapours.
How is (3-Mercaptopropyl)triethoxysilane typically shipped and exported?
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As a global supplier, Tech Serve Solutions expertly handles the packing and export of chemicals like (3-Mercaptopropyl)triethoxysilane, adhering to all relevant international shipping regulations. Specific packaging details are available upon request.
How can I request a sample or a quote for this product?
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To request a sample or obtain a quotation, please contact our sales team through the website or by calling us directly. Please specify the quantity required and your delivery location.
Does this chemical require special storage conditions?
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Yes, (3-Mercaptopropyl)triethoxysilane should be stored at a temperature of 2-8°C to maintain its quality and stability.
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