SILICON SULFIDE
SILICON DISULFIDE
CAS: 13759-10-9
Molecular Formula: S2Si
SILICON SULFIDE - Names and Identifiers
SILICON SULFIDE - Physico-chemical Properties
| Molecular Formula | S2Si |
| Molar Mass | 92.22 |
| Density | 2,02 g/cm3 |
| Melting Point | 1090°C subl. |
| Boling Point | 1090°C |
| Water Solubility | Decomposes in water |
| Appearance | Morphological white rhombohedral crystals |
| Merck | 14,8494 |
| Storage Condition | Room Temprature |
| Sensitive | Moisture Sensitive |
| Physical and Chemical Properties | Properties Silicon sulfide is an inorganic compound, its chemical formula is SiS2, belonging to the orthorhombic or square crystal system, stable at room temperature and pressure, and decomposed into SiO2 and H2S when exposed to moisture. |
SILICON SULFIDE - Risk and Safety
| UN IDs | UN3134 |
| TSCA | Yes |
| HS Code | UN3134 |
| Hazard Class | 4.3 |
| Packing Group | II |
SILICON SULFIDE - Reference Information
| properties | silicon disulfide is an inorganic compound with the chemical formula of SiS2, belonging to orthorhombic or tetragonal crystal system, stable under normal temperature and pressure, the moisture on the decomposition of SiO2 and H2S. |
| powder preparation | under the protection of nitrogen atmosphere, lithium sulfide and silicon tetrachloride were uniformly mixed in a molar ratio of 2:1, transfer to the reactor and seal. Heating to 140 C at a heating rate of 2 C/min, 5H. After completion of the reaction, the reaction mixture was lowered to room temperature, and excess silicon tetrachloride was recovered by distillation at 100 °c. The solid product in the reactor is added to benzene, and the benzene solution containing silicon sulfide is obtained by solid-liquid separation. The benzene is recovered by distillation at 120 ℃, the silicon disulfide powder can be obtained by drying the solid at 100 ℃. |
| production method | 1. Aluminum powder and excess sulfur are placed in a Crucible and burned to prepare aluminum sulfide. The aluminum sulfide was crushed and mixed with a slight excess of silica sand. The mixture was placed in a tile pan, and the tile pan was placed in a quartz tube, and heated while a small amount of dry nitrogen was introduced into the quartz tube. The reaction started at 1100 ° C. And the sublimed SIS 2 adhered to the low temperature region of the tube at 1200 to 1300 ° C. Fig. When purified, re-Sublimation in nitrogen or vacuum. A mixture of silicon and sulfur was heated at 5 × 103MPa and 700 ° C. To obtain the tetragonal SIS 2. 2. The hydrocarbon sulfur-based silicon is decomposed by heating to generate Silicon disulfide and sulfide at 250~300 ℃. If sulfur is added, it decomposes at a lower temperature. 96g of sulfur and 39g of Si(SC2H5)4 were mixed together and heated at 200 ° C. For 10min to yield silicon disulfide and ethyl sulfoxide (C2H5-S2-C2H5, C2H5-S3-C2H5). After the latter is dissolved in benzene, it is filtered under conditions that prevent the incorporation of moisture. |
| EPA chemical substance information | information is provided by: ofmpeb.epa.gov (external link) |
Last Update：2024-04-10 22:29:15
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