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The Composition And Stability Of Silanes

Qufu Focuschem Trading Co.,Ltd | Updated: Jun 21, 2017

    Silane, a compound of silicon and hydrogen, is a generic term for a series of compounds including monosilane (SiH4), disilane (Si2H6) and some more advanced silicon hydrides. The most widely used is monosilane. Silane is generally referred to simply as silane.Silane

    Silane as a source of gas to provide silicon components can be used to make high purity polysilicon, monocrystalline silicon, microcrystalline silicon, amorphous silicon, silicon nitride, silicon oxide, heterogeneous silicon, various metal silicides. Because of its high purity and can achieve fine control, has become a lot of other silicon source can not replace the important special gas. Silane is widely used in microelectronics, optoelectronics industry, for the manufacture of solar cells, flat panel displays, glass and steel coating, and is the world's only large-scale production of granular high purity silicon intermediates. Silane high-tech applications are still emerging, including the use of advanced ceramics, composite materials, functional materials, biological materials, high-energy materials, etc., as many new technologies, new materials, new devices based. Silane is known for its unique spontaneous combustion and explosive properties. Silane has a very wide range of spontaneous ignition and strong combustion energy, it is a high-risk gas.Silane

    Stability: Avoid strong oxidants, strong bases, halogen. The gas density in the standard state is 1.44 g / L and the relative density of the liquid is 0.68 (-185 ° C). A vapor pressure of 11 mmHg (1 mmHg = 133.322 Pa) (-160C), 102 mmHg (-140C), and 470 mmHg (-120C). The infrared spectrum wavelength is 2191 cm-1, 914 cm-1. At room temperature for the gas state, in the storage process, within a few months without significant decomposition. Because the monosilane is almost insoluble in grease, it can be stored in a stopper-coated container. The chemical properties of silanes are much more active than alkanes and are easily oxidized. Spontaneous combustion can occur when in contact with air. 25 ℃ below and nitrogen does not work, at room temperature and hydrocarbons can not react. And oxygen reaction is extremely intense, even at -180 ℃ temperature will be violent reaction. Silane and HCFC fire extinguishing agent will react violently, so can not use such extinguishing agent fire. The explosion limit is 0.8% ~ 98%.Silane