Registration Dossier
Registration Dossier
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EC number: 210-535-3 | CAS number: 617-86-7
Endpoint summary
Administrative data
Description of key information
Triethylsilane is a liquid at standard temperature and pressure, with melting point of -156.9°C and boiling point of 100 - 109°C. The substance has a relative density value of 0.73 at 20°C and a vapour pressure value in the range 1500 - 2700 Pa at 25°C.
The substance is classified as Flammable Liquid, Cat. 2, according to Regulation (EC) No. 1272/2008. This is on the basis of a measured flash point of -5°C and boiling point of 100 -109°C. It has a measured auto-ignition temperature of 235°C at 1010 -1012 hPa.
On the basis of structural examination, the substance is not considered to be surface active, it is not oxidising and does not have any of the chemical structures that are associated with explosive properties.
In contact with water, triethylsilane reacts slowly (half-life of 377 hours at 20°C and pH 7, 56.8 hours at 20°C and pH 9) to produce triethylsilanol and hydrogen according to the following equation:
(CH3CH2)3SiH + H2O → (CH3CH2)3SiOH + H2
Triethylsilane has a predicted log Kow of 3.6 at 20°C and predicted water solubility of 2 mg/l at 20°C.
The silanol hydrolysis product, triethylsilanol has the potential to form dimers in solution. The concentration of triethylsilanol in water may be determined by this condensation reaction rather than by the solubility of triethylsilanol itself. It has a predicted solubility of 1E+06 mg/l at 20°C and a predicted log Kow of 2.6 at 20°C and is not surface active. Triethylsilanol is less volatile than the parent substance (20 Pa at 25°C, predicted).
Additional information
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