12042-65-8

Basic information

• Product Name: aluminium, compound with calcium (2:1)
• Synonyms: Aluminium, compound with calcium (2:1); alumane; $l2-calcane
• CAS NO: 12042-65-8
• Molecular Formula: Al₂Ca
• Molecular Weight: 94.0411
• EINECS: 234-930-5
• Mol File: 12042-65-8.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: aluminium, compound with calcium (2:1)(CAS DataBase Reference)
• NIST Chemistry Reference: aluminium, compound with calcium (2:1)(12042-65-8)
• EPA Substance Registry System: aluminium, compound with calcium (2:1)(12042-65-8)

Safety Data

• Hazardous Substances Data: 12042-65-8(Hazardous Substances Data)

Upstream product

• 7440-70-2 calcium 
• 7429-90-5 aluminium 

Relevant articles and documents

Chemical short-range order and the Meyer-Neldel rule for liquid alloys: AlCa and GaAlCa

We have measured the electrical resistivity, ρ, its specific temperature dependence, α = (1/ρ)dρ/dT, and the thermopower, S, of two series of ternary liquid alloys: GaxAl67-xCa33 and GaxAl50-xCa50. We also provide new analysis for the binary liquid alloy AlCa. We do not see the unusually large values for S that were found earlier for amorphous solid ternary alloys of the approximate composition GaxAlyCa60. We do find that, while chemical short-range order (CSRO) appears to occur in the liquid binary alloy Al2Ca, CSRO is apparently destroyed by substitution of one Ga atom for one Al per complex: Ga1Al1Ca1. CSRO may exist in the liquid alloy Ga2Ca. And we find that the activated conductivities of these ternary liquid alloys (and also of liquid AlCa) are consistent with the Meyer-Neldel rule (MNR), extending the range of applicability of the MNR to systems with activation energies about an order of magnitude smaller than previously observed. These results appear to rule out two physical models as universal bases for the MNR, but are consistent with one based on a hopping conductivity whose characteristic energy is that of a polaron shift.