Title: Trichlorosilane
CAS Registry Number: 10025-78-2
Additional Names: Trichloromonosilane; silicochloroform
Molecular Formula: Cl3HSi
Molecular Weight: 135.45
Percent Composition: Cl 78.52%, H 0.74%, Si 20.73%
Line Formula: SiHCl3
Literature References: Prepd from Si and HCl or from SiH4 and HCl in presence of AlCl3: Gattermann, Ber. 22, 190 (1889); Ruff, Albert, Ber. 38, 2226 (1905); Stock, Zeidler, Ber. 56, 986 (1923); Schenk in Handbook of Preparative Inorganic Chemistry vol. 1, G. Brauer, Ed. (Academic Press, New York, 2nd ed., 1963) pp 691-692. Toxicity study: H. F. Smyth et al., J. Ind. Hyg. Toxicol. 31, 60 (1949).
Properties: Volatile, mobile liquid. Fumes in air. Supports combustion. d40 1.3830; d420 1.3417; d425 1.3313. mp -126.5°. bp760 31.8°, also reported as 36.5°. Viscosity in cP: 0.397 at 0°; 0.332 at 20°; 0.316 at 25°. nD20 1.4020; nD25 1.3983. Dec by water. Sol in benzene, carbon disulfide, chloroform, carbon tetrachloride. Dipole moment 0.97. LD50 orally in rats: 1.03 g/kg (Smyth).
Melting point: mp -126.5°
Boiling point: bp760 31.8°, also reported as 36.5°
Index of refraction: nD20 1.4020; nD25 1.3983
Density: d40 1.3830; d420 1.3417; d425 1.3313
Toxicity data: LD50 orally in rats: 1.03 g/kg (Smyth)
Use: In organic synthesis. |