CID 15688015

Base Information

• Chemical Name: CID 15688015
• CAS No.: 12044-49-4
• Molecular Formula: As2Mg3
• Molecular Weight: 222.76
• Mol file: 12044-49-4.mol

Synonyms:

Chemical Property of CID 15688015

Chemical Property:

• Melting Point: 800°C
• Boiling Point: °Cat760mmHg
• Flash Point: °C
• PSA: 0.00000
• Density: g/cm³
• LogP: -0.53660
• Sensitive.: Moisture Sensitive
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 98.906636
• Heavy Atom Count: 2
• Complexity: 2

Purity/Quality:

99.9% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

SDS file from LookChem

Useful:

• Canonical SMILES: [Mg]=[As]
• 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.