Silicon sulfide, molecular formula is SiS2. White fibrous rhombic or tetragonal crystals. Stable at room temperature and pressure, decomposes into SiO2 and H2S when exposed to moisture. Burns when heated in air.
Molecular formula: SiS2
Molecular weight: 92.215
Properties: white crystalline powder
Density: 2.02g/cm3
Melting point: 1090℃
Boiling point: 1130℃
1. Purity: 4N (99.99%) 5N (99.999%)
2. Packaging: bottled, 1 kg/bottle, vacuum packaging with aluminum composite film outside the bottle;
3. Technical docking: high temperature and high pressure vacuum melting, thermal diffusion after treatment;
4. Application: scientific research;
5. Storage method: sealed and light-proof at room temperature, ventilated and dry place
Silicon disulfide crystals have various structural types, mainly the following three types:
α-type SiS2 crystals are hexagonal closest packing structures with layered structures, and the three-dimensional crystal structure is maintained by the interaction force of van der Waals forces between layers. The unit cell parameters of α-type silicon disulfide crystals are a=3.086 nm, c=5.058 nm, and the crystal density is 2.97 g/cm³.
β-type SiS2 crystals are tetragonal closest packing structures with layered structures, and the S-S bond distance between adjacent layers is equal to the S-S bond length within the layer. The unit cell parameters of β-type silicon disulfide crystal are a=b=c=0.382 nm, and the crystal density is 2.66 g/cm³.
γ-type SiS2 crystal is a long-period cubic crystal structure, with the properties of α- and β-type SiS2 crystals, its lattice constant is a=1.2067 nm, and the crystal density is 2.18 g/cm³.
Silicon disulfide has relatively stable chemical properties, high hardness, and is not easily affected by physical effects such as thermal expansion. Therefore, it is often used to prepare ceramic materials, catalysts, friction agents, etc. In the electronics industry, it is also widely used in the manufacture of semiconductors and solar cells.
Germanium disulfide (GeS2), Germanium monosulfide (GeS), (TiS2), CoS2, Nickel disulfide (NiS2), Lithium sulfide (Li2S), etc.
VI HALBLEITERMATERIAL GmbH (VIMATERIAL) employs a stringent quality assurance system to ensure the reliability of our product quality. Strict quality control is implemented throughout the entire production chain, and for defective products, we strictly enforce the principle of rework and redo. Each batch is released only after passing detailed specification tests.
Every batch of our materials is independently tested, and, if necessary, we send samples to certified companies for testing. We provide these documents and analysis certificates with the shipment to certify that our products meet the required standards.
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