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Iron disilicide FeSi2 powder overview
The chemical form of iron disilicide is FeSi2, which is an intermetallic compound, a kind of iron silicide, which exists as a rare mineral in nature. Forms rhombohedral crystals (β phase) at room temperature, and transforms into tetragonal α phase when heated to 970 °C. Iron disilicide is gray powder, odorless, square, and insoluble in water. Iron disilicide (FeSi2) is a semiconductor material with a direct band gap (0.85-0.87 eV), with high optical absorption coefficient, high Seebeck coefficient, high operating temperature and high oxidation resistance.
Physical and chemical properties of iron disilicide
Iron disilicide is an inorganic silicon compound, the molecular formula is FeSi₂, the molecular weight is 119.975, gray powder, odorless, tetragonal. Chemicalbook can be used as catalyst for catalytic oxidation and methanation of hydrogen, specifically as deoxidizer for welding flux, humidity sensor, FeSi₂ thermocouple, and thermoelectric solar cell.
Production method of iron disilicide
Mix iron powder and silicon powder with a molar ratio of 1:2, and eutectic or sinter in vacuum or inert atmosphere

Application of iron disilicide FeSi2 powder
Iron disilicide is used as a catalyst for hydrogen catalytic oxidation and methanation.
Iron disilicide is used as a deoxidizer for flux, humidity sensors, FeSi2 thermocouples and thermoelectric solar cells.
Iron disilicide is used in a variety of photovoltaic applications, such as lithium-ion batteries, light-emitting diodes (LEDs), and solar cells.
Iron disilicide FeSi2 powder price
The price of iron disilicide FeSi2 powder will change randomly with the production cost of iron disilicide FeSi2 powder, transportation cost, international situation, exchange rate and supply and demand of iron disilicide FeSi2 powder. Tanki New Materials Co., Ltd. aims to help industries and chemical wholesalers find high-quality, low-cost nanomaterials and chemicals by providing a full range of customized services. If you are looking for iron disilicide FeSi2 powder, please feel free to send an inquiry to get the latest price of iron disilicide FeSi2 powder.
Iron disilicide FeSi2 powder suppliers
As a global supplier of iron disilicide FeSi2 powder, Tanki New Materials Ltd. has extensive experience in the performance, application and cost-effective manufacturing of advanced engineered materials. The company has successfully developed a series of powder materials (including oxides, carbides, nitrides, single metals, etc.), high-purity targets, functional ceramics and structural devices, and provides OEM services.
| Iron Disilicide Properties | |
| Other Names | Iron disilicon; iron silicide |
| CAS No. | 12022-99-0 |
| Compound Formula | FeSi2 |
| Molecular Weight | 112.02 |
| Appearance | Gray Black Powder |
| Melting Point | N/A |
| Boiling Point | N/A |
| Density | 4.75 g/cm3 |
| Solubility in H2O | N/A |
| Exact Mass | 111.888795 |
| Iron Disilicide Health & Safety Information | |
| Signal Word | N/A |
| Hazard Statements | N/A |
| Hazard Codes | N/A |
| Risk Codes | N/A |
| Safety Statements | N/A |
| Transport Information | N/A |
