Silicon tetrachloride

The tetrachloride of silicon is a chemical compound, of SiCl₄ formula. It is a colorless liquid, relatively volatile.

Manufacture

The silicon tetrachloride is prepared from Silicium and of Dichlore:

$\backslash \; mathrm\; \{If\; +\; 2\; \backslash \; Cl\_2\; \backslash \; rightarrow\; SiCl\_4\}$

At the time of traitment of the Dioxyde of silicon one uses Chlorure of hydrogen, this one can also be used in the synthesis of silicon tetrachloride:

$\backslash \; mathrm\; \{If\; +\; 4\; \backslash \; HCl\; \backslash \; rightarrow\; SiCl\_4\; +\; H\_2\}$

Reactivity

The silicon tetrachloride is a very reactive compound. In particular it reacts violently with the Eau (contrary to the Carbon tetrachloride)

$\backslash \; mathrm\; \{SiCl\_4\; +\; 2\; \backslash \; H\_2O\; \backslash \; rightarrow\; SiO\_2\; +\; 4\; \backslash \; HCl\}$

Sentences of risk and the Councils of prudence

• R 14: Reacts violently in contact with water.

• R 20: Harmful by inhalation.
• R 22: Harmful in the event of ingestion.
• R 34: Cause burns.
• R 36/37/38: Irritating for the eyes, the respiratory tracts and the skin.
• S 7: To preserve the well closed container.
• S 8: To preserve the container safe from moisture.
• S 26: In the event of contact with the eyes, to immediately wash to consult an ophthalmologist.

Random links:

List presidents of Bulgaria | Obligatory reserves | Canton of Fruges | Manual Robert | Alfred Brazier Howell | Loulé

© 2007-2008 speedlook.com; article text available under the terms of GFDL, from fr.wikipedia.org