1112-66-9
TETRAALLYLSILANE
CAS: 1112-66-9
Molecular Formula: C12H20Si
1112-66-9 - Names and Identifiers
| Name | TETRAALLYLSILANE |
| Synonyms | TETRAALLYLSILANE TETRA(2-PROPENYL)SILANE Tetraallylsilane, Percent tetraprop-2-en-1-ylsilane Tetrakis(2-propenyl)silane Tetraallylsilane, 97 Percent tetrakis(prop-2-en-1-yl)silane |
| CAS | 1112-66-9 |
| InChI | InChI=1/C12H20Si/c1-5-9-13(10-6-2,11-7-3)12-8-4/h5-8H,1-4,9-12H2 |
| InChIKey | AKRQMTFHUVDMIL-UHFFFAOYSA-N |
1112-66-9 - Physico-chemical Properties
| Molecular Formula | C12H20Si |
| Molar Mass | 192.37 |
| Density | 0.831 g/mL at 25 °C (lit.) |
| Melting Point | <0°C |
| Boling Point | 90 °C/3 mmHg (lit.) |
| Flash Point | 171°F |
| Water Solubility | Insoluble in water. |
| Vapor Presure | 0.304mmHg at 25°C |
| Appearance | Liquid |
| Specific Gravity | 0.8345 |
| BRN | 1750943 |
| Storage Condition | under inert gas (nitrogen or Argon) at 2-8°C |
| Sensitive | 4: no reaction with water under neutral conditions |
| Refractive Index | n20/D 1.485(lit.) |
| MDL | MFCD00048161 |
| Physical and Chemical Properties | WGK Germany:3 |
1112-66-9 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S23 - Do not breathe vapour. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 10-23 |
| TSCA | No |
| HS Code | 29319090 |
1112-66-9 - Reference Information
| introduction | tetraallyl silane is an allyl silane, which is a special silicone monomer. its Si-C bond breaking energy is 306kj/mol, which is similar to the C- C bond breaking energy 345kj/mol, and the polarity of the Si-C bond is very low, therefore, the kinetic and thermodynamic properties of carbosilane are stable, and it is the raw material for preparing silicone rubber in industry. |
| traits | transparent colorless to light yellow liquid. |
| preparation | method 1: add allyl MgBr THF solution (200ml,400mmol,2.0M THF solution) dropwise to SiCl4 THF solution (11ml,16.18g,95mmol) at room temperature (23±5 ℃). The reaction mixture was stirred for 2 hours at room temperature and refluxed for 12 hours overnight. After the reaction is completed, the reaction product is cooled to room temperature, poured into ice water, and extracted with ether (Et2O). The ethylene-based extract was combined, washed with water, dried with Na2SO4 and concentrated. The residue was separated by suction distillation to obtain tetraallylsilane of colorless oil phase. Method 2: The reaction device is a 500mL four-mouth flask, equipped with a constant pressure drop funnel and a spherical condenser tube, under the purging and protection of dry nitrogen, a proper amount of magnesium powder is filled, stirred for more than ten minutes, and activated with a small amount of iodine. Mix 200mL of toluene with an appropriate amount of tetrahydrofuran, and then mix 3-bromopropene with it; add 10mL of tetrahydrofuran dissolved in 9.3g SiCl4 into a constant pressure drop funnel. At the beginning of the reaction, a small amount of 3-bromopropene solution is added dropwise, and the Grignard reagent preparation reaction is initiated under the cooling of the water bath. The silicon tetrachloride SiCl4 solution is added dropwise to maintain a certain dripping acceleration to keep the reaction liquid refluxing. After the reaction is completed, keep the temperature at 50 ℃ and reflux for 60 hours. After the reactants are cooled to room temperature, drop an appropriate amount of saturated ammonium chloride solution into the reaction bottle under ice bath conditions to adjust the pH to neutral. Add appropriate amount of hydrocarbon solvent to the reactant, collect the upper oil, distill under reduced pressure after drying, evaporate the solvent, and collect the fraction at 71-72 ℃/4mmHg to obtain colorless, transparent and special odor tetraallyl silane liquid. |
| use | basic structural unit of synthetic dendrimer. |
Last Update：2024-04-10 22:29:15
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