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Encyclopedia > Silicon tetrachloride
Space-filling model of an SiCl4 molecule

Silicon tetrachloride (SiCl4) is a colourless volatile liquid compound of silicon and chlorine. It is most commonly prepared by reacting chlorine with hot silicon: Image File history File links Silicon_tetrachloride. ... Image File history File links Download high-resolution version (1078x1100, 202 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Silicon tetrachloride ... Volatile is the name of more than one concept: A financial instrument with high volatility is considered volatile in economics. ... A liquid will usually assume the shape of its container. ... General Name, Symbol, Number silicon, Si, 14 Chemical series metalloids Group, Period, Block 14, 3, p Appearance as coarse powder, dark gray with bluish tinge Atomic mass 28. ... General Name, Symbol, Number chlorine, Cl, 17 Chemical series halogens Group, Period, Block 17, 3, p Appearance yellowish green Atomic mass 35. ... A chemical reaction occurs when vapours of hydrogen chloride and ammonia meet to form a cloud of a new substance, ammonium chloride Chemical reactions is a process that results in the interconversion of chemical substances [1]. The substance or substances initially involved in a chemical reaction are called reactants. ...

Si + 2 Cl2 → SiCl4

Silicon tetrachloride has a molar mass of 169.90 g/mol, a density of 1.483 g cm−3, a melting point of −70 °C, and a boiling point of 57.6 °C. It reacts violently with water, in contrast with carbon tetrachloride. This hydrolysis reaction occurs because the atomic radius of the silicon atom is such that the water molecules can attack it, whereas carbon has a smaller atomic radius so the chlorine atoms effectively shield the carbon from attack. In water, the following reaction occurs: Molar mass is the mass of one mole of a chemical element or chemical compound. ... Density, or volumic mass (ISO 31), is a measure of mass per volume. ... The melting point of a crystalline solid is the temperature at which it changes state from solid to liquid. ... The boiling point of a substance is the temperature at which it can change its state from a liquid to a gas throughout the bulk of the liquid at a given pressure. ... This article describes water from a scientific and technical perspective. ... R-phrases , , , , S-phrases , , , , , Flash point non flammable RTECS number FG4900000 Supplementary data page Structure and properties n, εr, etc. ... Hydrolysis is a chemical reaction or process in which a molecule is split into two parts by reacting with a molecule of water, which has the chemical formula H2O. One of the parts gets an OH- from the water molecule and the other part gets an H+ from the water. ... The atomic radius is the distance from the atomic nucleus to the outermost stable electron orbital in an atom that is at equilibrium. ... Atomic redirects here. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ...

SiCl4 + 2 H2O → SiO2 + 4 HCl

Other oxidants, strong acids, alcohols, bases, ketones, and aldehydes can also react with SiCl4 to produce hydrogen chloride. It has corrosive effects on the skin, eyes and lungs. An oxidizing agent is a substance that oxidizes another substance in electrochemistry or redox chemical reactions in general. ... A strong acid is an acid that dissociates completely in an aqueous solution, or in other terms, with a pKa < -1. ... In general usage, alcohol (from Arabic al-khwl &#1575;&#1604;&#1603;&#1581;&#1608;&#1604;, or al-ghawl &#1575;&#1604;&#1594;&#1608;&#1604;) refers almost always to ethanol, also known as grain alcohol, and often to any beverage that contains ethanol (see alcoholic beverage). ... A base in chemistry is a chemical substance which has a free pair of electrons to bind a hydrogen ion commonly referred to as a proton (IUPAC definition). ... Ketone group A ketone is either the functional group characterized by a carbonyl group linked to two other carbon atoms or a chemical compound that contains this functional group. ... An aldehyde. ... R-phrases , S-phrases , , , , Flash point non-flammable Supplementary data page Structure and properties n, εr, etc. ... Corrosion is the destructive reaction of a metal with another material, e. ...

Silicon tetrachloride is sometimes used as an intermediate in the manufacture of extremely pure silicon, since it has a boiling point convenient for purification by repeated fractional distillation; it can be reduced to silicon by hydrogen gas, or hydrolysed to SiO2 as a precursor for extremely pure synthetic fused silica. Very pure silicon is used in large amounts in the semiconductor industry, and also in the production of photovoltaic cells. General Name, Symbol, Number silicon, Si, 14 Chemical series metalloids Group, Period, Block 14, 3, p Appearance as coarse powder, dark gray with bluish tinge Atomic mass 28. ... Fractional distillation is the separation of a mixture into its component parts, or fractions, such as in separating chemical compounds by their boiling point by heating them to a temperature at which several fractions of the compound will evaporate. ... Fused quartz is a man-made material manufactured principally from sands. ...

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