409-21-2
Product Name:
Silicon carbide
Formula:
CSi
Synonyms:
;Silicon carbide fibers;Silicon carbide nanowhiskers;Silicon carbide whiskers
Inquiry
CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Silicon carbide appears as yellow to green to bluish-black, iridescent crystals. Sublimes with decomposition at 2700 °C. Density 3.21 g cm-3. Insoluble in water. Soluble in molten alkalis (NaOH, KOH) and molten iron. |
|---|---|
| Color/Form | EXCEEDINGLY HARD, GREEN TO BLUISH-BLACK, IRIDESCENT, SHARP CRYSTALS |
| Boiling Point | Sublimes (NIOSH, 2023) |
| Melting Point | 4892 °F (Sublimes) (NIOSH, 2023) |
| Solubility | Insoluble (NIOSH, 2023) |
| Density | 3.23 (NIOSH, 2023) - Denser than water; will sink |
| Vapor Pressure | 0 mmHg (approx) (NIOSH, 2023) |
| Ionization Potential | 9.30 eV |
| Refractive Index | INDEX OF REFRACTION: 2.654; 2.697 |
| Other Experimental Properties | DIELECTRIC CONSTANT: 7.0; HARDNESS: 9.5; ELECTRON MOBILITY: GREATER THAN 100 SQ CM/VOLT-SEC; HOLE MOBILITY: GREATER THAN 20 SQ CM/VOLT-SEC; BAND GAP ENERGY: 2.8 ELECTRON-VOLTS |
| Chemical Classes | Mineral Dusts -> Other Mineral Dusts |
SAFETY INFORMATION
| Signal word | Danger |
|---|---|
| Pictogram(s) |
 Health Hazard GHS08 |
| Precautionary Statement Codes |
P201:Obtain special instructions before use. P202:Do not handle until all safety precautions have been read and understood. P280:Wear protective gloves/protective clothing/eye protection/face protection. P308+P313:IF exposed or concerned: Get medical advice/attention. P405:Store locked up. P501:Dispose of contents/container to..… |
COMPUTED DESCRIPTORS
| Molecular Weight | 40.096 g/mol |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 1 |
| Rotatable Bond Count | 0 |
| Exact Mass | 39.976926534 g/mol |
| Monoisotopic Mass | 39.976926534 g/mol |
| Topological Polar Surface Area | 0 Ų |
| Heavy Atom Count | 2 |
| Formal Charge | 0 |
| Complexity | 10 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Silicon carbide appears as yellow to green to bluish-black, iridescent crystals. Sublimes with decomposition at 2700 °C. Density 3.21 g cm-3. Insoluble in water. Soluble in molten alkalis (NaOH, KOH) and molten iron.