3D model (JSmol)
CompTox Dashboard (EPA)
|Molar mass||92.218 g/mol|
|Appearance||White (samples are sometimes grey or brown) needles.|
Rotten egg smell in moist air.
|Melting point||1,090 °C (1,990 °F; 1,360 K) sublimes|
|NFPA 704 (fire diamond)|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|what is ?)(|
Silicon disulfide is the inorganic compound with the formula SiS2. Like silicon dioxide, this material is polymeric, but it adopts a 1-dimensional structure quite different from the usual forms of SiO2.
Like other silicon sulfur-compounds (e.g., bis(trimethylsilyl)sulfide) SiS2 hydrolyzes readily to release H2S. In liquid ammonia it is reported to form the imide Si(NH)2 and NH4SH, but a recent report has identified crystalline (NH4)2[SiS3(NH3)]·2NH3 as a product which contains the tetrahedral thiosilicate anion, SiS3(NH3).
SiS2 is claimed to occur in certain interstellar objects.