are compounds in which silicon is bonded to from one to four
chlorine atoms with other bonds to hydrogen and/or alkyl groups.
Chlorosilanes react with water, moist air, or steam to produce heat
and toxic, corrosive fumes of hydrogen chloride. They may also
produce flammable gaseous H2.
Chlorosilanes are a group of reactive,
chlorine-containing chemical compounds, related to
silane and used in many chemical processes. Each
such chemical has at least one silicon-chlorine
are prepared by the Rochow process, which involved treating silicon
with hydrogen chloride at elevated temperatures in the presence of a
- Raw Materials
required to prepare Chlorosilanes are Hydrogen chloride, Methyl
Chloride, Silicon and Copper Catalyst. The technology is based on a
new method for producing monosilane from silicon tetrachloride by
its interaction with lithium hydride. The method is new in the
aspect of implementation because a method of converting silicon
tetrachloride to monosilane by lithium hydride in a salt melt has
been know previously.
- The technology
is based on a new method for producing monosilane from silicon
tetrachloride by its interaction with lithium hydride. The method is
new in the aspect of implementation because a method of converting
silicon tetrachloride to monosilane by lithium hydride in a salt
melt has been know previously.
purification of the resulting monosilane converts it to a commodity
product suitable for many applications in microelectronics and in
the production of high-purity polycrystalline silicon
are chemical compounds made up of silicon, carbon, hydrogen and
chlorine. They are used to manufacture silicone products.
are essential raw materials in the electronics and
telecommunications industries and are used for the production of
optical fibers, silicon wafers and chips, as well as the starting
material for fumed silicas.
available data on world or even national production and trade of
chlorosilanes is quite scarce. 60-65% of trichlorosilane production
is reportedly consumed in the semiconductor sector , thus an
estimate of world production can be obtained through knowledge of
the amount used in semiconductors.
- The total
amount of silicon metal used in the semiconductor sector in 1998 is
estimated at 53,000 tons . Using production data on the production
process, one can estimate that 228,000 metric tons of
trichlorosilane was from this input. From this, world production of
trichlorosilane is perhaps 350,000-380,000 tons per annum.
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