(Iodomethyl)trimethylsilane
(Iodomethyl)trimethylsilane (CAS 4206-67-1) is an organosilicon compound with the linear formula (CH3)3SiCH2I and a molecular weight of 214.12 g/mol. This versatile reagent is commonly employed in organic synthesis as a source of the (trimethylsilyl)methyl group. It finds application in various chemical transformations, enabling the introduction of this functional unit into diverse molecular structures.
- IUPAC
- (Trimethylsilyl)methyl iodide
- Synonyms
- (Trimethylsilyl)methyl iodide

Organic Synthesis Reagent
Serves as a valuable building block in organic chemistry for the introduction of the (trimethylsilyl)methyl moiety. This enables the construction of more complex molecules with tailored properties.
Organosilicon Chemistry
Utilised in studies and syntheses involving organosilicon compounds. Its structure allows for specific reactivity patterns characteristic of silicon-carbon bonds.
Intermediate for Complex Molecules
Acts as an intermediate in multi-step syntheses, facilitating the preparation of fine chemicals and advanced materials through controlled chemical reactions.
| Molecular weight | 214.12 |
|---|---|
| Linear formula | (CH3)3SiCH2I |
| Assay | ≥99.0% (GC) |
| Boiling point | 139-141 °C(lit.) |
| Density | 1.443 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.491(lit.)n20/D 1.491 |


Hazard statements
- H226Flammable liquid and vapour
- 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, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 29 °C / 84.2 °F |
| Transport (UN / ADR) | UN 2924 8(3) / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 10-36/37/38 |
| 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 (Iodomethyl)trimethylsilane used for?
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(Iodomethyl)trimethylsilane is primarily used as a reagent in organic synthesis to introduce the (trimethylsilyl)methyl group into various molecules. It is valuable in organosilicon chemistry and as an intermediate for complex organic compounds.
What is the CAS number and formula for (Iodomethyl)trimethylsilane?
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The CAS number for (Iodomethyl)trimethylsilane is 4206-67-1 and its linear formula is (CH3)3SiCH2I.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies (Iodomethyl)trimethylsilane with an assay of ≥99.0% (GC). We do not represent this product as USP, BP, EP, or any other pharmacopoeia grade unless explicitly stated otherwise.
How should (Iodomethyl)trimethylsilane be handled safely?
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(Iodomethyl)trimethylsilane is a flammable liquid and vapour (H226) and can cause skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). It requires handling with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator, in a well-ventilated area.
How is (Iodomethyl)trimethylsilane packed and shipped?
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(Iodomethyl)trimethylsilane is classified under UN 2924, Hazard Class 8(3), Packing Group III. Tech Serve Solutions ensures appropriate packaging and documentation for domestic and international export, adhering to all relevant shipping regulations.
How can I request a sample or quote for (Iodomethyl)trimethylsilane?
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To request a sample or obtain a quote for (Iodomethyl)trimethylsilane, please contact our sales team through the website or via direct email, providing your specific requirements and shipping details.
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