Silicon tetrachloride is a product of technical purity (99.6%) with the amount of free chlorine not exceeding 0.2%. It is used as a raw material/intermediate in the production of metallurgical grade silicon, silica and other silicon-based substances.
The largest amounts of the produced tetrachlorosilane are used for the production of high-quality fumed silica. The product is also a precursor in the production of orthosilicate acid esters, including tetraethoxysilane (TEOS) and tetramethoxysilane (TMOS). The derivatives are the starting point for the production of aerogels – products with high market potential, strongly developing in the construction, automotive and pharmaceutical industries.
Tetrachlorosilane is also of great importance in the electrochemical, photovoltaic and optical fibre industries. The product is a precursor in the process of pure silicon synthesis, used for the production of semiconductors and silicon anodes in lithium-ion batteries. Purified tetrachlorosilane is used as a raw material for the production of optical fibres, silicon wafers and semiconductors.
The product is also used as a cross-linking agent in the processing of styrene-butadiene rubber (SBR). In analytics, it is used for chemical analysis and smoke screens, and for the production of various silicon-containing chemicals.
Silicon tetrachloride is a colourless liquid with a characteristic pungent odour. It is broken down by water into hydrochloric acid with the release of heat. The product is corrosive to metals and tissues in the presence of moisture.
It is miscible with toluene, benzene, chloroform, carbon tetrachloride, petroleum ether, ether and hydrochloric acid. It is a transparent liquid at standard temperature and pressure. The product reacts violently with water, moreover it is caustic and toxic. It does not ignite spontaneously at temperatures below 650°C, nor is it explosive and it does not oxidise.
PACKING and TRANSPORT
ISO-Tank, rail transport.