Lanthanum Oxide,La2O3,

CAS No.: 1312-81-8

           spec          typical
TREO:     97% min.        98.5%
La2O3/TREO: 99.9% min.    99.95%  
CeO2/ TREO: 0.025% max.    0.01%
Pr6O11/TREO: 0.025% max.   0.01%
Nd2O3/TREO: 0.015% max.    0.01% 
Sm2O3/TREO: 0.02% max.   0.003%
Y2O3/TREO: 0.01% max.    0.001%
Fe2O3:    0.02% max.      0.008%
CaO:      0.20% max.      0.07%
Cl:       0.10% max.      0.06%
SiO2:     0.03% max.      0.03%
L.O.I.:    3% max.        1.2%

mapletec@mapletec.net  La₂O₃ has largest of the rare earth oxides at 4.3 eV, while also having the lowest lattice energy, with very high , ε = 27. La₂O₃ is widely used in industry as well as in the research laboratory. Lanthanum oxide is an odorless, white solid that is insoluble in water, but soluble in dilute acid. Depending on the pH of the compound, different crystal structures can be obtained. Lanthanum oxide has p-type semi-conducting properties because its resistivity decreases with an increase in temperature, average room temperature resistivity

mapletec@mapletec.net