Silicon tetrachloride

Tetrachlorosilane

Pungent-smelling, colorless liquid

Liquid

1.48 g · cm -3

-70 ° C

57 ° C.

253 hPa ( 20 ° C)

Reacts violently with water

1.41156 (25 ° C)

Attention

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Silicon tetrachloride ( tetrachlorosilane and silicon tetrachloride ) is a chemical compound selected from the group consisting of silicon tetrahalides with the formula SiCl 4. It is a colorless, volatile, fuming liquid, the moist air is composed of the elements silicon and chlorine.

Production and representation

Silicon tetrachloride is typically obtained by the reaction of chlorine with hot silicon:

Since silica to hydrogen chloride in the further processing, it will also be used to save so through the composite materials:

The resulting hydrogen can be utilized for the manufacture of pyrogenic silica.

Properties

Silicon tetrachloride is a highly reactive compound. Unlike the corresponding carbon compound carbon tetrachloride, silicon tetrachloride reacts violently with water:

Oxidizing agents, acids, alcohols, bases, ketones, aldehydes and esp. also react with silicon tetrachloride. It has a strong corrosive effect and is corrosive to skin, eyes and lungs.

In the purification of silicon tetrachloride, silicon is sometimes used as an intermediate.