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| CAS No.: | 409-21-2 |
|---|---|
| Name: | Silicon carbide |
| Molecular Structure: | |
|
|
| Formula: | CSi |
| Molecular Weight: | 40.10 |
| Synonyms: | 100FT;37C150;A 20 (carbide);AE 60;AE 60 (carbide);Annanox CK;B-HP;B-HP (carbide);BLOk;BLOk II;BSC 059;Betack 1566;Betarundum;Betarundum UF;C 1000F;C700D Dark;C 800D Dark;CF 4000;CP 240;CP 400;CVD-SiC;E 599P1500;EKasic F;EKasic TRIBO 2000;EKasic TRIBO 2000-1;F 1000 (carbide);F120;F 220;F500 (carbide);FCP 13NLC;FCP 15;G-UF;GC 10 (carbide);GC 1000;GC 10000;GC 15 (carbide);GC 150;GC 15R;GC 180;GC 2000;GC 20000;GC 240;GC 2500;GC 280;GC 3000;GC 400 (carbide);GC 4000;GC 4000F;GC 400B;GC 800;GC 8000;GCR 1500;GMF 15H2;GMF 6S;GP 600 (abrasive);GP-SFP 1.7;Green Densic;Green Densic GC 180;Green Densic GC 240;Green Densic GC 800;HF 30;HSC;HSC (carbide);HSC 490;Halsic RX;Hexoloy SA;Hexoloy SX;Hitaceram SC 101;Ibiceram SC 850;Ibiden;KZ 5M;Lonza UF 05;M 14 (carbide);M 2M28;MSC 20;MSM 33;NC 2000;NC 2000(carbide);NC 203;NC 6000;NFO 860;NG 80;NS 260;OY 15;OY 3;Carbofrax M;Carbogran F 180;Carbogran F 80;Carbogran UF 15;Carborandom;Carborundum;Ceralloy C 400;Cercom SiC-B;Cercom SiC-SC 1R;Coors SC 300;Crystar;Crystolon F 240;Crystolon F 320;DCR 100F;DU-A 2;DU-A 3C;DU-A 4;Densic 180;Densic 220;Densic C 150;Densic C 500;Densic GC;Densic RC31;E 299-400;E 299-600; |
| EINECS: | 206-991-8 |
| Density: | 3.22 g/mL at 25 °C(lit.) |
| Melting Point: | 2700 °C(lit.) |
| Solubility: | Soluble in molten alkalis (NaOH, KOH) and molten iron. Insoluble in water. |
| Appearance: | light grey powder |
| Hazard Symbols: |
 Xi
|
| Risk Codes: | 36/37/38 |
| Safety: | 26-36 |
| PSA: | 0.00000 |
| LogP: | -0.29950 |
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History
Early, non-systematic and often non-recognized syntheses of silicon carbide had been reported by Despretz (1849), Marsden (1880) and Colson (1882).
Wide-scale production is credited to Edward Goodrich Acheson around 1893. He patented the method for making silicon carbide powder on February 28, 1893.
Historically, first use of SiC was as an abrasive. They were followed by electronic applications. In the beginning of the 20th century, silicon carbide was used as a detector in the first radios,and in 1907 Henry Joseph Round produced the first light emitting diode (LED) by applying voltage a SiC crystal and observing yellow, green and orange emission at the cathode. Those experiments were later repeated by O. V. Losev in the Soviet Union in 1923.
Consensus Reports
Reported in EPA TSCA Inventory.
Standards and Recommendations
OSHA PEL: TWA Total Dust: 10 mg/m3; Respirable Fraction: 5 mg/m3
ACGIH TLV: TWA (inhalable nonfibrous) 10 mg/m3 of total dust; (respirable fraction) 3 mg/m3; (fibrous forms) 0.1 fibers/cc; Suspected Human Carcinogen
DFG MAK: (with fibers) Animal Carcinogen, Suspected Human Carcinogen; (without fibers) 1.5 mg/m3
NIOSH REL: (Silicon Carbide, Total Dust) TWA 10 mg/m3
Specification
The Silicon carbide, with its cas register number 409-21-2, has the EINECS number 206-991-8. And its IUPAC name is methylidynesilanide. This is a kind of light yellow transparent crystal, and is insoluble in water, hot water and acid. Besides, its product categories are various, including inorganics; carbides; ceramics; metal and ceramic science; carbidesmaterials science; 14: si; nanomaterials; nanoparticles: oxides, nitrides, and other ceramicsnanomaterials; nanopowders and nanoparticle dispersions.
Below are some basic information of this chemical: This kind of chemical has good inertia and good adaptive capacity to oxidation and thermal fluctuation. Besides, it has very low expansion coefficient and vey high coefficient of heat transfer.
The production methods are as below: (1) silica or si mixs with carton raw material, and then have reduction reaction with the temp. of 1300～1800℃, and finally you could get this chemical. (2)organosilicon compound and HC(hydrocarbon) have the thermal decomposition in the temp. of 1400～1900℃, with the existence of reduction gas, and finally get Silicon carbide.
As to its usage, it is widely applied in many ways. It could be used in atomic reactor material, chemical outfit, electrical heating component, and electrical resistor; It could also be used in grinding material, abrasive tools, highgraderefractory and fine ceramics; It is used in Reinforced fibre of compostie material, such as resin, metal, and in wave absorbing material and heat-resisting material.
When you are using this chemical, you should be very cautious. This chemical is irritant to eyes, respiratory system and skin, and it may cause inflammation to the skin or other mucous membranes. So you had better wear suitable protective clothing, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice. Besides, this chemical needs high-temperature operation, so people need to take some measures to prevent burning and heatstroke. Because this chemical is the high-concentration powder which could cause pneumoconiosis, people should take the measure of dust defending. When you store it, keep it in a cool, dry, and well-ventilated storeroom and couldn't mix and transport with inorganic acid and then prevent the rain. If caught on fir, people could put out the fir with water, dry sand and carbon dioxide.
Additionally, you could convert the following datas information into the molecular structure:
Canonical SMILES: [C+]#[Si-]
InChI: InChI=1S/CSi/c1-2
InChIKey: HBMJWWWQQXIZIP-UHFFFAOYSA-N