Galliumarsenid
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Galliumarsenid Eigenschaften
- Schmelzpunkt:
- 1238°C
- Dichte
- 5.31 g/mL at 25 °C (lit.)
- Dampfdruck
- 0Pa at 20℃
- Brechungsindex
- 3.57
- Aggregatzustand
- pieces
- Farbe
- Dark gray
- Wichte
- 5.31
- Widerstand (resistivity)
- ≥1E7 Ω-cm
- Wasserl?slichkeit
- Soluble in hydrochloric acid. Insoluble in water, ethanol, methanol and acetone.
- Crystal Structure
- Cubic, Sphalerite Structure - Space Group F(-4)3m
- Merck
- 14,4347
- CAS Datenbank
- 1303-00-0(CAS DataBase Reference)
- IARC
- (Vol. 86, 100C) 2012
- EPA chemische Informationen
- Gallium arsenide (1303-00-0)
Sicherheit
- Risiko- und Sicherheitserkl?rung
- Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher | T,N | ||
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R-S?tze: | 23/25-50/53-48/23-45 | ||
S-S?tze: | 20/21-28-45-60-61-53 | ||
RIDADR | UN 1557 6.1/PG 2 | ||
WGK Germany | 3 | ||
RTECS-Nr. | LW8800000 | ||
F | 10 | ||
TSCA | Yes | ||
HazardClass | 6.1 | ||
PackingGroup | II | ||
HS Code | 2853909090 | ||
Giftige Stoffe Daten | 1303-00-0(Hazardous Substances Data) | ||
Toxizit?t | mouse,LD50,intraperitoneal,4700mg/kg (4700mg/kg),BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY)PERIPHERAL NERVE AND SENSATION: FLACCID PARALYSIS WITHOUT ANESTHESIA (USUALLY NEUROMUSCULAR BLOCKAGE)BEHAVIORAL: FOOD INTAKE (ANIMAL),Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 45(10), Pg. 13, 1980. |
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Galliumarsenid Chemische Eigenschaften,Einsatz,Produktion Methoden
R-S?tze Betriebsanweisung:
R23/25:Giftig beim Einatmen und Verschlucken.R50/53:Sehr giftig für Wasserorganismen, kann in Gew?ssern l?ngerfristig sch?dliche Wirkungen haben.
S-S?tze Betriebsanweisung:
S20/21:Bei der Arbeit nicht essen, trinken,rauchen.S28:Bei Berührung mit der Haut sofort abwaschen mit viel . . . (vom Hersteller anzugeben).
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S60:Dieses Produkt und sein Beh?lter sind als gef?hrlicher Abfall zu entsorgen.
S61:Freisetzung in die Umwelt vermeiden. Besondere Anweisungen einholen/Sicherheitsdatenblatt zu Rate ziehen.
Chemische Eigenschaften
Gallium arsenide contains 48.2% gallium and 51.8% arsenic and is considered an intermetallic compound. It occurs as cubic crystals with a dark gray metallic sheen. Gallium arsenide is electroluminescent in infrared light. Gallium arsenide readily reacts with oxygen in air, forming a mixture of oxides of gallium and arsenic on the crystal surface. Gallium arsenide presents the following properties: hardness, 4.5; thermal expansion coefficient, 5.9×106; thermal conductivity, 0.52Wunits; specific heat, 0.086 cal/g/ ℃; intrinsic electron concentration, 107; energy gap at room temperature, 1.38 eV; electron mobility, 8800 cm2/V/s; effective mass for electrons, 0.06m0; lattice constant,5.6–54 AO; dielectric constant, 11.1; intrinsic resistivity at 300K=3.7×108Ωcm; electron lattice mobility at 300K= 10,000 cm2/V/s; intrinsic charge density at 300K=1.4 106 cm-3; electron diffusion constant at 300K=310 cm2/s; and hole diffusion constant=11.5 cm2/s.Garlic odor when moistened. Finely divided gallium arsenide can react vigorously with steam, energetic acids, and oxidizers to evolve arsine gas, and can release arsenic fumes when heated to decomposition. The molten form attacks quartz.
Physikalische Eigenschaften
Gray cubic crystal; density 5.316 g/cm3; melts at 1,227°C; hardness 4.5 Mohs; lattice constant 5.653?; dielectric constant 11.1; resistivity (intrinsic) at 27°C, 3.7x108 ohm-cm.Verwenden
In semiconductor applications (transistors, solar cells, lasers).Gallium arsenide is among the most widely used intermetallic semiconductor components (Harrison, 1986; McIntyr and Sherin, 1989). Gallium arsenide is also incorporated into light-emitting diodes and photovoltaic cells, while gallium alloys are used for dental amalgam as a low toxicity replacement for mercury.synthetische
Gallium arsenide is prepared by passing a mixture of arsenic vapor and hydrogen over gallium(III) oxide heated at 600°C: Ga2O3 + 2As + 3H2 2GaAs + 3H2OThe molten material attacks quartz. Therefore, quartz boats coated with carbon by pyrolytic decomposition of methane should be used in refining the compound to obtain high purity material. Gallium arsenide is produced in polycrystalline form as high purity, single crystals for electronic applications. It is produced as ingots or alloys, combined with indium arsenide or gallium phosphide, for semiconductor applications.Allgemeine Beschreibung
Dark gray crystals with a metallic greenish-blue sheen or gray powder. Melting point 85.6°F (29.78°C).Air & Water Reaktionen
Stable in dry air. Tarnishes in moist air. Insoluble in water.Reaktivit?t anzeigen
GALLIUM ARSENIDE can react with steam, acids and acid fumes. Reacts with bases with evolution of hydrogen. Attacked by cold concentrated hydrochloric acid. Readily attacked by the halogens. The molten form attacks quartz.Hazard
Toxic metal. Questionable carcinogenBrandgefahr
Flash point data for GALLIUM ARSENIDE are not available; however, GALLIUM ARSENIDE is probably combustible.Sicherheitsprofil
Confirmed carcinogen. Mddly toxic by intraperitoneal route. Most arsenic compounds are poisons. Can react with steam, acids, and acid fumes to evolve the deadly poisonous arsine. Molten gallium arsenide attacks quartz. When heated to decomposition it emits very toxic fumes of As. See also ARSENIC COMPOUNDS and GALLIUM COMPOUNDS.Carcinogenicity
Carcinogenesis.Gallium is antineoplastic in several human and murine cancer cell lines and in some in vivo cancers. It has been used experimentally in patients in the treatment of lymphatic malignancies (including multiple myelomas) and for urothelial malignancies. However, the dissociation of gallium arsenide into gallium and arsenic is a factor to take into account. A considerable number of studies have evaluated the carcinogenic potential of arsenic and various arsenic compounds.
Structure and conformation
The space lattice of gallium arsenide (GaAs) belongs to the cubic system Td2, and its zincblende-type structure has a lattice constant of a=0.5654 nm and a distance to its nearest neighbor of 0.244 nm.Galliumarsenid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Galliumarsenid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.
Global( 81)Lieferanten
Firmenname | Telefon | Land | Produktkatalog | Edge Rate | |
---|---|---|---|---|---|
Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21634 | 55 |
career henan chemical co | +86-0371-86658258 +8613203830695 |
sales@coreychem.com | China | 29880 | 58 |
Hubei xin bonus chemical co. LTD | 86-13657291602 |
linda@hubeijusheng.com | CHINA | 22963 | 58 |
Chongqing Chemdad Co., Ltd | +86-023-6139-8061 +86-86-13650506873 |
sales@chemdad.com | China | 39894 | 58 |
changzhou huayang technology co., ltd | +8615250961469 |
2571773637@qq.com | China | 9725 | 58 |
Shaanxi Didu New Materials Co. Ltd | +86-89586680 +86-13289823923 |
1026@dideu.com | China | 8670 | 58 |
GIHI CHEMICALS CO.,LIMITED | +8618058761490 |
info@gihichemicals.com | China | 49978 | 58 |
Aladdin Scientific | +1-+1(833)-552-7181 |
sales@aladdinsci.com | United States | 57505 | 58 |
Mainchem Co., Ltd. | +86-0592-6210733 |
sale@mainchem.com | China | 32343 | 55 |
Meryer (Shanghai) Chemical Technology Co., Ltd. | 021-61259108 18621169109 |
market03@meryer.com | China | 40228 | 62 |
1303-00-0(Galliumarsenid)Verwandte Suche:
Gallium
Trimethylgallium
Digalliumtrioxid
Zinkselenid
Zinktellurid
Cadmiumsulfid
Cadmiumselenid
Cadmiumtellurid
Indiumphosphid
Zinksulfid
Galliumphosphid
Galliumarsenid
Arsin
Diarsenpentoxid
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- galliummonoarsenide
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- Lead(Pb)
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- Gallium arsenide, 99.999%
- Gallium arsenide (single crystal substrate), (100) ± 0.5o
- Gallium arsenide (single crystal substrate), (111)B ± 0.5o
- Gallium arsenide (GaAs substrate), <100>, (undoped, 10 x 10 x 0.5 mm)
- Gallium Arsenide Nanopowder
- Gallium Arsenide Powder
- gallium(III) arsenide
- Gallium Arsenic
- 1303-00-0
- GaAs
- AsGa
- inorganic compound
- Electronic Materials
- Materials Science
- Micro/Nanoelectronics
- Arsenides
- Ceramics
- Metal and Ceramic Science
- Inorganics