Ethynyltrimethylsilane
ALDRICH/218170 - 98%
Synonym: Trimethylsilylacetylene
CAS Number: 1066-54-2
Empirical Formula (Hill Notation): C5H10Si
Molecular Weight: 98.22
MDL Number: MFCD00008569
Linear Formula: (CH3)3SiC≡CH
Product Type: Chemical
| assay | 98% |
| bp | 53 °C (lit.) |
| density | 0.709 g/cm3 (lit.) |
| form | liquid |
| InChI | 1S/C5H10Si/c1-5-6(2,3)4/h |
| InChI key | CWMFRHBXRUITQE-UHFFFAOYSA |
| Quality Level | 200 ![]() |
| refractive index | n |
| SMILES string | C[Si](C)(C)C#C |
| storage temp. | 2-8°C |
| vapor pressure | 4.18 psi ( 20 °C) |
| Application: | Ethynyltrimethylsilane was used in: • microwave-assisted, one-pot, three-step Sonogashira cross-coupling-desilylati • synthesis of poly(ethynyltrimethylsila • pyrazole synthesis via 1,3-dipolar cycloaddition of diazo compounds to acetylenes |
| General description: | Laser-induced polymerization of gaseous ethynyltrimethylsilane was used for efficient chemical vapour deposition of polycarbosilane films. Ethynyltrimethylsilane acts as substrate for nickel-catalyzed cross-coupling with benzonitriles. |
| Packaging: | 1, 5, 25, 100 g in glass bottle |
| Symbol | ![]() GHS02,GHS07 |
| Signal word | Danger |
| Hazard statements | H225 - H315 - H319 |
| Precautionary statements | P210 - P233 - P240 - P241 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | F,Xi |
| Risk Statements | 11-36/37/38 |
| Safety Statements | 16-26 |
| RIDADR | UN 1993BF 3 / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | -29.2 °F |
| Flash Point(C) | -34 °C |
| Purity | 98% |
| bp | 53 °C (lit.) |
| Density | 0.709 g/cm3 (lit.) |
| Refractive Index | n |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352100 |



