2-(TRIMETHYLSILOXY)-1,3-BUTADIENE
2-(Trimethylsiloxy)-1,3-butadiene
CAS: 38053-91-7
Molecular Formula: C7H14OSi
2-(TRIMETHYLSILOXY)-1,3-BUTADIENE - Names and Identifiers
2-(TRIMETHYLSILOXY)-1,3-BUTADIENE - Physico-chemical Properties
| Molecular Formula | C7H14OSi |
| Molar Mass | 142.27 |
| Density | 0.807 |
| Boling Point | 50 °C |
| Flash Point | 12°C |
| Solubility | sol most standard organic solvents. |
| Vapor Presure | 14.9mmHg at 25°C |
| Appearance | clear liquid |
| Specific Gravity | 0.807 |
| Color | Colorless to Light yellow to Light orange |
| Storage Condition | Store at +2°C to +8°C. |
| Sensitive | 7: reacts slowly with moisture/water |
| Refractive Index | 1.4480 |
2-(TRIMETHYLSILOXY)-1,3-BUTADIENE - Risk and Safety
| Risk Codes | R11 - Highly Flammable R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. |
| Safety Description | S16 - Keep away from sources of ignition. S23 - Do not breathe vapour. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | 1992 |
| WGK Germany | WGK 3 highly water e |
| TSCA | No |
| HS Code | 2931 90 00 |
| Hazard Class | 3 |
| Packing Group | II |
2-(TRIMETHYLSILOXY)-1,3-BUTADIENE - Reference Information
| Use | 2-trimethylsiloxy -1, 3-butadiene is a hydrocarbon organic substance and can be used as an organic intermediate. |
| preparation | add methyl vinyl ketone (purchased from AlfaAesar, 2.00 mL, 1.66g, 23.7 mmol), NEt3 (4.09 mL, 2.97g, 29.4mmol) to the suspension of NaI (4.40g, 1.2 equivalent) in MeCN (50 mL) at room temperature, 1.2eq) and Me3SiCl(3.73 mL,3.17g,29.2 mmol,1.2eq). The mixture is heated and refluxed for 15 hours. After cooling to room temperature, pour it into H2O(30mL). Layered. The water layer is extracted with tBuOMe (3 × 10 mL) . The combined organic layer was washed with saturated ammonium chloride aqueous solution (3 × 10 mL) and dried with magnesium sulfate. Remove the solvent by vacuum. Distilled to obtain 2-trimethylsiloxy -1,3-butadiene (65 ℃,55mbar), which is a colorless liquid (1.627g, containing tBuOMe,0.949g,28%). |
| spontaneous combustion temperature | 350°C |
Last Update：2024-04-09 21:21:28
