Search results
Results from the WOW.Com Content Network
1 Material Safety Data Sheet. 2 Structure and properties. ... This page provides supplementary chemical data on silicon tetrachloride. Material Safety Data Sheet
Silicon tetrachloride or tetrachlorosilane is the inorganic compound with the formula SiCl 4. It is a colorless volatile liquid that fumes in air. It is used to produce high purity silicon and silica for commercial applications.
Stock and Somieski completed the hydrolysis of dichlorosilane by putting the solution of H 2 SiCl 2 in benzene in brief contact with a large excess of water. [3] [5] A large-scale hydrolysis was done in a mixed ether/alkane solvent system at 0 °C, which gave a mixture of volatile and nonvolatile [H 2 SiO] n.
Purified trichlorosilane is the principal precursor to ultrapure silicon in the semiconductor industry. In water, it rapidly decomposes to produce a siloxane polymer while giving off hydrochloric acid. Because of its reactivity and wide availability, it is frequently used in the synthesis of silicon-containing organic compounds. [2]
%PDF-1.5 %âãÏÓ 191 0 obj > endobj xref 191 25 0000000016 00000 n 0000001437 00000 n 0000001560 00000 n 0000001882 00000 n 0000002862 00000 n 0000003042 00000 n 0000003184 00000 n 0000003359 00000 n 0000003594 00000 n 0000004073 00000 n 0000004242 00000 n 0000081823 00000 n 0000082060 00000 n 0000082215 00000 n 0000107550 00000 n 0000107790 00000 n 0000108080 00000 n 0000142116 00000 n ...
Silicon tetrafluoride or tetrafluorosilane is a chemical compound with the formula Si F 4. This colorless gas is notable for having a narrow liquid range: its boiling point is only 4 °C above its melting point.
Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA/PEL, STEL, or REL) determined by the ACGIH professional association.
An alternative industrial process for the preparation of very high-purity silane, suitable for use in the production of semiconductor-grade silicon, starts with metallurgical-grade silicon, hydrogen, and silicon tetrachloride and involves a complex series of redistribution reactions (producing byproducts that are recycled in the process) and ...