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This also includes water, potentially producing silicon dioxide, chlorine, hydrogen, hydrogen chloride (and its aqueous form hydrochloric acid), and heat. Trichlorosilane can cause hazardous chemical reactions with moisture and humidity alone, and should be handled and stored under inert gas. [8]
Boiling point (°C) K b (°C⋅kg/mol) Freezing point (°C) ... Water: 100.00 0.512 0.00 ... Hydrochloric Acid: 84.8 [13] tert-Butanol: 82.5 [14]
Physical properties of hydrochloric acid, such as boiling and melting points, density, and pH, depend on the concentration or molarity of HCl in the aqueous solution. They range from those of water at very low concentrations approaching 0% HCl to values for fuming hydrochloric acid at over 40% HCl. [31] [32] [33]
Melting point: −26 °C (−15 °F; 247 K) Boiling point: 51 °C (124 °F; 324 K) ... In the laboratory, concentrated hydrochloric acid is used.
Melting point: −77 °C (−107 °F; 196 K) ... It is a colorless liquid with a sharp odor similar to that of hydrochloric acid. As methyltrichlorosilane is a ...
The key property of trisilane is its thermal lability. It degrades to silicon films and SiH 4 according to this idealized equation: . Si 3 H 8 → Si + 2 SiH 4. In terms of mechanism, this decomposition proceeds by a 1,2 hydrogen shift that produces disilanes, normal and isotetrasilanes, and normal and isopentasilanes.
Hydrolysis gives arsenous acid and hydrochloric acid: AsCl 3 + 3 H 2 O → As(OH) 3 + 3 HCl. Although AsCl 3 is less moisture sensitive than PCl 3, it still fumes in moist air. [10] AsCl 3 undergoes redistribution upon treatment with As 2 O 3 to give the inorganic polymer AsOCl. With chloride sources, AsCl 3 also forms salts containing the ...
The reaction can produce silanes up to n=15. The reaction of magnesium silicide with 25% hydrochloric acid produces 40% monosilane, 30% disilane, 15% trisilane, 10% tetrasilane and 5% higher silanes. [4] The mixture can be separated by fractional distillation. In addition, higher silanes can also be obtained by discharges monosilane: [3]