Methallyltrimethylsilane
Methallyltrimethylsilane (CAS: 18292-38-1), with the molecular formula H2C=C(CH3)CH2Si(CH3)3 and a molecular weight of 128.29 g/mol, is an organosilicon compound. It is characterised by its flammable liquid nature and is primarily utilised in chemical synthesis. Its structure makes it a valuable building block in organic chemistry, particularly for introducing the methallyl group in various reactions.

Organic Synthesis Reagent
Methallyltrimethylsilane serves as a versatile reagent in organic synthesis. It is employed to introduce the methallyl moiety into organic molecules through various coupling and substitution reactions, facilitating the construction of complex organic frameworks.
Organosilicon Chemistry
As an organosilicon compound, it finds application in research and development within organosilicon chemistry. Its unique structure allows for specific transformations and the synthesis of novel silicon-containing materials and intermediates.
Intermediate in Fine Chemical Production
This compound can act as an intermediate in the multi-step synthesis of fine chemicals and potential pharmaceutical precursors. Its reactivity profile enables its incorporation into diverse synthetic pathways.
| Molecular weight | 128.29 |
|---|---|
| Linear formula | H2C=C(CH3)CH2Si(CH3)3 |
| Assay | 97% |
| Boiling point | 109-111 °C(lit.) |
| Density | 0.73 g/mL at 25 °C(lit.) |

Hazard statements
- H225Highly flammable liquid and vapour
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | -6 °C / 21.2 °F |
| Transport (UN / ADR) | UN 1993BF 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F |
| Risk statements (R) | 11 |
| Safety statements (S) | 16 |
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 Methallyltrimethylsilane used for?
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Methallyltrimethylsilane is primarily used as a reagent in organic synthesis to introduce the methallyl group into molecules, and in the field of organosilicon chemistry for the development of new compounds and materials.
What is the CAS number and formula for Methallyltrimethylsilane?
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The CAS number for Methallyltrimethylsilane is 18292-38-1, and its linear formula is H2C=C(CH3)CH2Si(CH3)3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Methallyltrimethylsilane with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should Methallyltrimethylsilane be handled safely?
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Methallyltrimethylsilane is a highly flammable liquid and vapour (H225). Handle with appropriate personal protective equipment, including eyeshields, face shields, and suitable gloves, in a well-ventilated area away from ignition sources. Refer to the safety data sheet for detailed handling instructions.
How is Methallyltrimethylsilane packed and exported?
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Methallyltrimethylsilane is typically packed in compliance with transportation regulations for flammable liquids. Tech Serve Solutions exports this chemical globally, adhering to all relevant international shipping standards.
How can I request a sample or quote for Methallyltrimethylsilane?
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To request a sample or a quote for Methallyltrimethylsilane, please contact the Tech Serve Solutions sales team through our website or by phone, providing your specific requirements.
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