Silane - SiH4
Silane - SiH4
This page brings together the main information on " silicon tetrahydride " (SiH4) or silane such as its physical characteristics, its effects on health, the means of detecting it ( SiH4 gas detector ) as well as the appropriate respiratory protection equipment (self-contained breathing apparatus or air-supplied system).
Main characteristics of silane (SiH4)
" Silicon tetrahydride " (SiH4), better known as silane , is an active gas, mainly used for the deposition of silicon-based layers. In the glass industry, this process is carried out by pyrolysis (thermal decomposition of organic matter in the absence of oxygen). It is also used in the manufacture of amorphous silicon for photocopier drums or solar cells.
Health effects of silane
At room temperature, silane (SiH4) is a colorless gas with a characteristic odor. Heavier than air, it can create asphyxiating environments by replacing the oxygen present in poorly ventilated spaces. The main danger, however, remains its explosiveness, being extremely flammable, it can spontaneously ignite on contact with air. When heated, it produces hydrogen silicon, increasing the risk of explosion.
Silane can be absorbed into the body by inhalation. A dangerous concentration of this gas in the air is reached very quickly if it escapes from its container. If inhaled, silane causes headaches, nausea, coughing and a sore throat. Rapid evaporation of the liquid can cause frostbite.
SiH4 (Silane) gas detection
Although discernible by smell, only a SiH4 gas detector can accurately measure the concentrations of this asphyxiating gas, so we will move towards fixed or portable silane detection.
For the calibration and gas testing of your fixed or portable gas detectors, silane standard gas cylinders are available.
Silane (SiH4) respiratory protection
Silane is an asphyxiating gas with significant risks of suffocation, so we will opt for an open-circuit self-contained breathing apparatus (ARICO) or an air-supplied system for long-term interventions.