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Barium oxide, also known as baria, is a white hygroscopic non-flammable compound with the formula BaO. It has a cubic structure and is used in cathode-ray tubes, crown glass, and catalysts. It is harmful to human skin and if swallowed in large quantity causes irritation. Excessive quantities of barium oxide may lead to death.
It and barium have some uses in medicine, for example "barium meals" in radiographic imaging, whilst strontium compounds are employed in some toothpastes. Excessive amounts of strontium-90 are toxic due to its radioactivity and strontium-90 mimics calcium (i.e. Behaves as a " bone seeker ") where it bio-accumulates with a significant biological ...
Barium oxide – BaO [100] Barium permanganate – Ba(MnO 4) 2 [101] ... and related compounds, not hydroxides, carbonates, acids, or other compounds listed elsewhere) P
Green barium fireworks. Other compounds of barium find only niche applications, limited by the toxicity of Ba 2+ ions (barium carbonate is a rat poison), which is not a problem for the insoluble BaSO 4. Barium oxide coating on the electrodes of fluorescent lamps facilitates the release of electrons.
The most famous ReBCO is yttrium barium copper oxide, YBa 2 Cu 3 O 7−x (or Y123), the first superconductor found with a critical temperature above the boiling point of liquid nitrogen. [10] Its molar ratio is 1 to 2 to 3 for yttrium, barium, and copper and it has a unit cell consisting of subunits, which is the typical structure of perovskites .
This page provides supplementary chemical data on barium oxide. Material Safety Data Sheet. SDS from Millipore Sigma; Structure and properties. ...
Organoyttrium chemistry is the study of compounds containing carbon–yttrium bonds. A few of these are known to have yttrium in the oxidation state 0. [4] [23] (The +2 state has been observed in chloride melts, [24] and +1 in oxide clusters in the gas phase. [25]) Some trimerization reactions were generated with organoyttrium compounds as ...
Lanthanum barium copper oxide, or LBCO, is an inorganic compound with the formula CuBa 0.15 La 1.85 O 4. It is a black solid produced by heating an intimate mixture of barium oxide, copper(II) oxide, and lanthanum oxide in the presence of oxygen. The material was discovered in 1986 and was the first high temperature superconductor. [1]