(Pentamethyldisilyl)acetylene
(Pentamethyldisilyl)acetylene (CAS 63247-94-9) is an organosilicon compound with the molecular formula C₉H₂₀Si₂ and a molecular weight of 156.37 g/mol. This liquid compound is primarily utilised in chemical synthesis and as a reagent in organometallic chemistry. Its specific properties make it a valuable building block for introducing silyl-protected acetylene functionalities into more complex molecules.
Chemical Synthesis Reagent
This compound serves as a versatile reagent in organic synthesis, particularly for the introduction of silylated acetylene groups. It is useful in reactions where protection of the terminal alkyne is desired.
Organosilicon Chemistry
As an organosilicon compound, it finds applications in the development and study of silicon-containing molecules. Its structure allows for unique reactivity patterns.
Building Block for Complex Molecules
The molecule can be employed as a foundational unit in the construction of more intricate chemical structures in research and development settings.
| Molecular weight | 156.37 |
|---|---|
| Linear formula | (CH3)3SiSi(CH3)2C≡CH |
| Assay | 97% |
| Boiling point | 125 °C(lit.) |
| Density | 0.795 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.4410(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 | 12 °C / 53.6 °F |
| Transport (UN / ADR) | UN 1993BE 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F |
| Risk statements (R) | 11 |
| Safety statements (S) | 16-33 |
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 (Pentamethyldisilyl)acetylene used for?
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(Pentamethyldisilyl)acetylene is primarily used as a reagent in chemical synthesis and organometallic chemistry, serving as a building block for complex molecules.
What is the CAS number and chemical formula for (Pentamethyldisilyl)acetylene?
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The CAS number is 63247-94-9, and the linear formula is (CH₃)₃SiSi(CH₃)₂C≡CH.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies (Pentamethyldisilyl)acetylene with an assay of 97%. This is typically considered a research or technical grade; TSS does not represent it as USP, BP, or EP grade.
How should (Pentamethyldisilyl)acetylene be handled safely?
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(Pentamethyldisilyl)acetylene is a highly flammable liquid and vapour (H225). Handle in a well-ventilated area, away from ignition sources, and use appropriate personal protective equipment including eyeshields, gloves, and respiratory protection.
How is (Pentamethyldisilyl)acetylene shipped and exported?
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As a flammable liquid, (Pentamethyldisilyl)acetylene is shipped and exported according to relevant regulations for hazardous materials, designated as UN 1993, Hazard Class 3, Packing Group II.
How can I request a sample or quote for (Pentamethyldisilyl)acetylene?
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Please contact the TSS sales department via our website or direct email to request a sample or a formal quotation for (Pentamethyldisilyl)acetylene.
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