Trimethyl(phenylthio)silane
Trimethyl(phenylthio)silane (CAS: 4551-15-9), with the molecular formula C6H5SSi(CH3)3 and a molecular weight of 182.36 g/mol, is a valuable organosilicon compound. It serves as a useful building block in organic synthesis, particularly for introducing the phenylthio group. This compound is utilized in chemical research and development for creating novel molecules and materials.
- IUPAC
- (Phenylthio)trimethylsilane,S-(Trimethylsilyl)thiophenol,Phenyl trimethylsilyl sulfide
- Synonyms
- S-(Trimethylsilyl)thiophenolPhenyl trimethylsilyl sulfide

Organic Synthesis Reagent
Trimethyl(phenylthio)silane acts as a versatile reagent in organic chemistry, enabling the introduction of sulfur-containing functionalities into various organic frameworks. Its reactivity allows for the formation of carbon-sulfur bonds.
Building Block for Complex Molecules
As a key building block, this silane derivative is employed in the construction of more complex organic structures. It is particularly useful in synthetic pathways requiring controlled sulfur incorporation.
Research and Development
This compound finds application in academic and industrial research laboratories for exploring new synthetic methodologies and developing novel chemical entities.
| Molecular weight | 182.36 |
|---|---|
| Linear formula | C6H5SSi(CH3)3 |
| Assay | ≥98.0% (GC) |
| Boiling point | 72 °C/8 mmHg(lit.) |
| Density | 0.963 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.53n20/D 1.532(lit.) |


Hazard statements
- H226Flammable liquid and vapour
- H315Causes skin irritation
- H332Harmful if inhaled
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 33 °C / 91.4 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 10-20-38 |
| Safety statements (S) | 23-28 |
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 Trimethyl(phenylthio)silane used for?
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Trimethyl(phenylthio)silane is primarily used as a building block in organic synthesis and as a reagent for introducing phenylthio groups in chemical research and development.
What is the CAS number and formula for Trimethyl(phenylthio)silane?
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The CAS number for Trimethyl(phenylthio)silane is 4551-15-9, and its linear formula is C6H5SSi(CH3)3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Trimethyl(phenylthio)silane with an assay of ≥98.0% (GC). We do not represent this product as USP, BP, or EP grade.
How should Trimethyl(phenylthio)silane be handled safely?
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Trimethyl(phenylthio)silane is a flammable liquid and vapour (H226), causes skin irritation (H315), and is harmful if inhaled (H332). Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, in a well-ventilated area.
Is Trimethyl(phenylthio)silane shipped internationally?
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Yes, Tech Serve Solutions specialises in exporting fine chemicals globally, including Trimethyl(phenylthio)silane, adhering to all relevant shipping regulations.
How can I request a sample or quote for Trimethyl(phenylthio)silane?
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To request a sample or quote, please contact our sales team through the website or by phone, providing the product name and CAS number (4551-15-9).
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