| Company Name: |
3B Pharmachem (Wuhan) International Co.,Ltd.
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| Tel: |
821-50328103-801 18930552037 |
| Email: |
3bsc@sina.com |
| Products Intro: |
Product Name:MAGNESIUM ARSENIDE
CAS:12044-49-4
Purity:99% HPLC Package:1Mg ; 5Mg;10Mg ;100Mg;250Mg ;500Mg ;1g;2.5g ;5g ;10g
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| Company Name: |
Alfa Aesar
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400-6106006 |
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saleschina@alfa-asia.com |
| Products Intro: |
Product Name:MagnesiuM arsenide, 99.5% (Metals basis)
CAS:12044-49-4
Package:25g Remarks:039367
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| Company Name: |
Energy Chemical
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| Tel: |
021-021-58432009 400-005-6266 |
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sales8178@energy-chemical.com |
| Products Intro: |
Product Name:MAGNESIUM ARSENIDE
CAS:12044-49-4
Purity:99.5%(Metalsbasis) Package:100g,25g
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| | MAGNESIUM ARSENIDE Basic information |
| Product Name: | MAGNESIUM ARSENIDE | | Synonyms: | MAGNESIUM ARSENIDE;MAGNESIUM ARSENIDE, 99.5% (METALS BASIS);trimagnesium diarsenide;Magnesium arsenide, 99.5% trace metals basis | | CAS: | 12044-49-4 | | MF: | AsH2Mg | | MW: | 101.24 | | EINECS: | 234-954-6 | | Product Categories: | | | Mol File: | 12044-49-4.mol |  |
| | MAGNESIUM ARSENIDE Chemical Properties |
| RIDADR | UN1557 | | TSCA | Yes | | HazardClass | 6.1 | | PackingGroup | II |
| Provider | Language |
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ALFA
| English |
| | MAGNESIUM ARSENIDE Usage And Synthesis |
| Description | 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/cm3. 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, Eg, of 2.2eV
(564 nm). | | Uses | 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. |
| | MAGNESIUM ARSENIDE Preparation Products And Raw materials |
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