Silicon carbide CAS#409-21-2
High Hardness and Abrasive Performance: Silicon carbide has been widely used as an abrasive since 1893, making it suitable for applications requiring effective abrasion and wear resistance.
Excellent Durability for Ceramic Materials: Sintered silicon carbide powder produces hard ceramic particles suitable for durable products such as automotive brake pads, clutches, and bulletproof vests.
Versatile Electronic Applications: Silicon carbide is used in the manufacture of electronic components, including light-emitting diodes (LEDs) and early radio detectors.
Suitable for High-Temperature and High-Voltage Semiconductors: Silicon carbide is widely used in semiconductor manufacturing, particularly for devices designed to operate under high-temperature and high-voltage conditions.
Products Description of Silicon Carbide CAS#409-21-2
Silicon carbide (SiC) is a ceramic compound formed through the bonding of silicon and carbon. It occurs naturally as a rare mineral known as moissanite. Since 1893, silicon carbide powder has been widely used as an abrasive. Through sintering, the powder can be transformed into hard ceramic silicon carbide materials suitable for applications requiring high durability, including automotive brake pads, clutches, and bulletproof vests. Silicon carbide is also used in the production of electronic devices, such as light-emitting diodes (LEDs) and early radio detectors. Today, it is widely employed in the manufacture of semiconductors designed to operate under high-temperature and high-voltage conditions.
Silicon carbide Chemical Properties
| Melting point | 2700 °C (lit.) |
| density | 3.22 g/mL at 25 °C (lit.) |
| refractive index | 2.65 |
| solubility | Soluble in molten sodium hydroxide, potassium hydroxide and in molten iron. |
| form | nanopowder |
| color | Green |
| Specific Gravity | 3.22 |
| Resistivity | 107–200 (ρ/μΩ.cm) |
| Water Solubility | Soluble in molten alkalis (NaOH, KOH) and molten iron. Insoluble in water. |
| Crystal Structure | Cubic, Sphalerite Structure - Space Group F(-4)3m |
| Hydrolytic Sensitivity | 1: no significant reaction with aqueous systems |
| Merck | 148492 |
| Exposure limits | ACGIH: TWA 10 mg/m3; TWA 3 mg/m3; TWA 0.1 fiber/cm3 |
| OSHA: TWA 15 mg/m3; TWA 5 mg/m3 | |
| NIOSH: TWA 10 mg/m3; TWA 5 mg/m3 | |
| Stability: | Stability |
| InChIKey | HBMJWWWQQXIZIP-UHFFFAOYSA-N |
| IARC | 2A (Vol. 111) 2017 |
| NIST Chemistry Reference | Silicon monocarbide(409-21-2) |
| EPA Substance Registry System | Silicon carbide (409-21-2) |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-36 |
| OEB | B |
| OEL | TWA: 10 mg/m3 (total) |
| WGK Germany | 3 |
| RTECS | VW0450000 |
| TSCA | Yes |
| HS Code | 28492000 |
| Hazardous Substances Data | 409-21-2(Hazardous Substances Data) |
Product Application of Silicon Carbide CAS#409-21-2
Owing to its excellent thermal stability, high strength, high thermal conductivity, and other distinctive properties, silicon carbide is widely used in atomic energy materials, chemical equipment, high-temperature processing, electric heating elements, and resistors. It is also commonly applied in abrasives, grinding tools, advanced refractory materials, and fine ceramics.
