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| Product Name: | Trisilane | | Synonyms: | Trisilane;Silicopropane;Trisilicane;Trisilicon octahydride;Trisilicopropane;λ2-silanylidenesilylidenesilicon | | CAS: | 7783-26-8 | | MF: | H8Si3 | | MW: | 92.32 | | EINECS: | | | Product Categories: | | | Mol File: | 7783-26-8.mol |  |
| | Trisilane Chemical Properties |
| Melting point | -117.4° | | Boiling point | bp 52.9° | | density | d0 0.743 | | refractive index | 1.4978 | | solubility | reacts with H2O | | form | flammable liquid | | Specific Gravity | 0.7430 | | color | flammable colorless liquid | | Water Solubility | decomposed by H2O [MER06] | | Hydrolytic Sensitivity | 10: reacts extremely rapidly with moisture and oxygen - may be pyrophoric - sealed system required | | InChI | InChI=1S/H8Si3/c1-3-2/h3H2,1-2H3 | | InChIKey | VEDJZFSRVVQBIL-UHFFFAOYSA-N | | SMILES | [SiH3][SiH2][SiH3] | | EPA Substance Registry System | Trisilane (7783-26-8) |
| | Trisilane Usage And Synthesis |
| Preparation | Trisilane is a trace product of the reaction between SiH₂ and HCl, a reaction that requires an infrared laser. The laser is positioned on a stainless steel cylindrical cell perpendicular to the mass spectrometer's laser. Trisilane can also be prepared using the Schlesinger method, which involves reacting lithium aluminum hydride with octachloroTrisilane in n-butyl ether. Furthermore, Pauly, Purnell, and Walsh demonstrated in the 1960s that Trisilane thermally decomposes at high temperatures into silane and ethylsilane. | | Uses | Trisilane is a flammable and toxic liquid at room temperature and pressure. Its main uses are in the manufacture of semiconductor silicon films and amorphous silicon. | | Properties | Colorless liquid; density 0.743 g/mL at 0°C; freezes at –117.4°C; boils at 52.9°C; vapor density 4.15 g/L at atmospheric pressure; decomposes in water; decomposes in carbon tetrachloride.
| | Description | Silicon forms a series of hydrides known as silanes, formula SinH2n+2, where n is the number of silicon atoms in the molecule. This general formula for the silicon hydrides is similar to the CnH2n+2 for the alkane class of hydrocarbons.
| | Chemical Properties | colorless liquid; enthalpy of vaporization 28.38 kJ/mol; vapor pressure at (0°C) 95mm Hg; critical temp 189°C; reacts vigorously with CCl4 and CHCl3 [CIC73] [CRC10] [MER06] | | Hazard | Explodes on contact with air, reacts violently
with carbon tetrachloride and chloroform. |
| | Trisilane Preparation Products And Raw materials |
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