Trisilane
- CAS No.
- 7783-26-8
- Chemical Name:
- Trisilane
- Synonyms
- Trisilane;Trisilicane;Silicopropane;Trisilicopropane;Trisilicon octahydride;λ2-silanylidenesilylidenesilicon
- CBNumber:
- CB81106567
- Molecular Formula:
- H8Si3
- Molecular Weight:
- 92.32
- MDL Number:
- MFCD03701375
- MOL File:
- 7783-26-8.mol
| 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] |
| FDA UNII | 1T3A75Z4ZL |
| EPA Substance Registry System | Trisilane (7783-26-8) |
SAFETY
Risk and Safety Statements
| Symbol(GHS) |  GHS02 |
|---|---|
| Signal word | Danger |
| Hazard statements | H250 |
| Precautionary statements | P210-P222-P280-P302+P334-P370+P378-P422 |
| TSCA | TSCA listed |
Trisilane Chemical Properties,Uses,Production
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
Raw materials
Preparation Products
| Supplier | Tel | Country | ProdList | Advantage | |
|---|---|---|---|---|---|
| QUANJIAO ARGOTECH NEW ELECTRONIC MATERIALS TECHNOLOGY CO.,LTD. | +8613913851441 13913851441 | murphysong@argotechs.com.cn | China | 60 | 58 |
| SHAANXI?DIDEU?MEDICHEM CO.LTD | 17691182729 17392216275 | 1073@dideu.com | China | 9993 | 58 |
| Meryer (Shanghai) Chemical Technology Co., Ltd. | 4006356688 18621169109 | market03@meryer.com | China | 40202 | 62 |
| Suzhou Siso new material Co.,Ltd. | 0512-65402974 18550909935 | siso03@126.com | China | 1925 | 58 |
| HUNAN CHEMFISH SCIENTIFIC CO.,LTD | 85521272 18932438858 | sales@chemfish.com | China | 7780 | 58 |
| DWS Specialty Gas Co., Ltd | 15906197626 | yanning@abamtc.com | China | 447 | 58 |
| Hebei Zhenjia new material Co., LTD | 0319-5925599 13315915972 | 13313090628@163.com | China | 2913 | 58 |
| Shanghai Jasper Gas Co., Ltd. | 13218776790 13218776790; | 13218776790@163.com | China | 449 | 58 |
| Nanxing Chemical (Jiangsu) Co., Ltd | 0512-66387035 18662433356 | 18662433356@163.com | China | 9516 | 58 |
| ShangLan Gases （ShangHai）Co.，Ltd | 4001882517 13194677939 | shineliu@isotopecenter.com | China | 483 | 58 |
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