Trimagnesiumdiarsenid
|
|
|
- CAS-Nr.
- 12044-49-4
- Bezeichnung:
- Trimagnesiumdiarsenid
- Englisch Name:
- MAGNESIUM ARSENIDE
- Synonyma:
- MAGNESIUM ARSENIDE;trimagnesium diarsenide;Magnesium arsenide (Mg3As2);MAGNESIUM ARSENIDE, 99.5% (METALS BASIS);Magnesium arsenide, 99.5% trace metals basis
- CBNumber:
- CB2488404
- Summenformel:
- AsH2Mg
- Molgewicht:
- 101.24
- MOL-Datei:
- 12044-49-4.mol
|
Trimagnesiumdiarsenid Eigenschaften
Sicherheit
- Risiko- und Sicherheitserkl?rung
- Gefahreninformationscode (GHS)
| RIDADR |
UN1557 |
|
|
| TSCA |
TSCA listed |
|
|
| HazardClass |
6.1 |
|
|
| PackingGroup |
II |
|
|
| Bildanzeige (GHS) |
 
|
| Alarmwort |
Achtung
|
| Gefahrenhinweise |
| Code |
Gefahrenhinweise |
Gefahrenklasse |
Abteilung |
Alarmwort |
Symbol |
P-Code |
| H301 |
Giftig bei Verschlucken. |
Akute Toxizit?t oral |
Kategorie 3 |
Achtung |
|
P264, P270, P301+P310, P321, P330,P405, P501 |
| H331 |
Giftig bei Einatmen. |
Akute Toxizit?t inhalativ |
Kategorie 3 |
Achtung |
|
P261, P271, P304+P340, P311, P321,P403+P233, P405, P501 |
| H400 |
Sehr giftig für Wasserorganismen. |
Kurzfristig (akut) gew?ssergef?hrdend |
Kategorie 1 |
Warnung |
|
P273, P391, P501 |
| H410 |
Sehr giftig für Wasserorganismen mit langfristiger Wirkung. |
Langfristig (chronisch) gew?ssergef?hrdend |
Kategorie 1 |
Warnung |
|
P273, P391, P501 |
|
| Sicherheit |
| P261 |
Einatmen von Staub vermeiden. |
| P304+P340 |
BEI EINATMEN: Die Person an die frische Luft bringen und für ungehinderte Atmung sorgen. |
| P405 |
Unter Verschluss aufbewahren. |
|
Trimagnesiumdiarsenid Chemische Eigenschaften,Einsatz,Produktion Methoden
Beschreibung
Magnesium arsenide has the molecular formula of
Mg3As2 and the molecular weight of 223.6592 g/mol.
It may be prepared by direct reaction between the
elements. Since As sublimes at 614°C and Mg melts at
650°C, the latter is melted at about 675°C in an inert
atmosphere like argon (not N2 which would form
nitrides) and arsenic vapors are carried into the reaction
zone by a stream of Ar gas:
3Mg + 2As + heat Mg3As2
Mg3As2 is obtained by this method as a deep-brown,
X-ray amorphous powder. Magnesium arsenide has the
CAS number of 12044-49-4. This compound decomposes
in contact with water:
Mg3As2 + 3H2O 2AsH3 + 3Mg(OH)2
Thus, it must be stored under dry conditions. Its
density is 3.15 g/cm
3. This compound is dimorphic
with the low temperature form, β-Mg3As2 being cubic
(α = 12.33) and the high-temperature form, α-Mg3As2
being hexagonal. It crystallizes in the anti-La2O3 crystal
structure, with unit-cell parameters of: a = 4.264A ° ,
c = 6.738, c/a = 1.580. Both of these compounds are
semiconductors. The latter has a band gap, E
g, of 2.2eV
(564 nm).
Verwenden
The structure of magnesium
arsenide is not ionic but covalent.
Magnesium arsenide was used as a rodenticide and
insecticide. Its toxicity to humans has led to its prohibition
in the US and Europe.
Trimagnesiumdiarsenid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Trimagnesiumdiarsenid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.
Global( 22)Lieferanten
12044-49-4(Trimagnesiumdiarsenid)Verwandte Suche:
- MAGNESIUM ARSENIDE
- MAGNESIUM ARSENIDE, 99.5% (METALS BASIS)
- trimagnesium diarsenide
- Magnesium arsenide, 99.5% trace metals basis
- Magnesium arsenide (Mg3As2)
- 12044-49-4
- Mg3As2
- As2Mg3
