Barium selenate is an inorganic compound with the chemical formula BaSeO4. It is characterized by its white crystalline appearance and is relatively insoluble in water. Barium selenate is primarily used in various applications, including as a reagent in chemical synthesis and in the study of selenium compounds. The compound contains barium, a heavy alkaline earth metal, and selenate, which is the anion derived from selenic acid. Barium selenate is known for its low toxicity compared to other barium compounds, but it should still be handled with care due to the potential health risks associated with selenium. In terms of stability, it is generally stable under normal conditions but may decompose at elevated temperatures. The compound can be synthesized through the reaction of barium salts with selenic acid or selenate salts. Overall, barium selenate is an important compound in both industrial and research settings, particularly in the fields of materials science and environmental chemistry.

Barium selanate has the molecular formula of BaSeO4
and the molecular weight of 280.2748 g/mol. It can be
prepared by reacting sodium selenate with barium chloride
in solution:
BaCl2(aq)+ Na2SeO4(aq) ? BaSeO4+ 2NaCl(aq)
Barium selenate is slightly soluble in water at
0.0052 g/100 ml at 20°C. Its CAS number is 7787-41-9.
It is a white rhombic crystal which decomposes when
heated beyond about 425°C. It is slightly soluble in
water at 0.0152 g/100 ml at 20°C. Its solubility product
is 3.40×10
-8
.
The heat of formation of barium selenate is:
△H
298
BaSeO4 = -249.0 kcal/mol (-1041.8 kJ/mol).
As a result of the measurements, it has been found
that for the reaction:
Basolid+ Sesolid+ 2O2 = BaSeO4
△H
298
= -279.2 cal/mol
△F
298
= -249.1 cal/mol

Barium selenate

7787-41-9: Barium selenate is an inorganic compound with the chemical formula BaSeO4. It is characterized by its white crystalline appearance and is relatively insoluble in water. Barium selenate is primarily used in various applications, including as a reagent in chemical synthesis and in the study of selenium compounds. The compound contains barium, a heavy alkaline earth metal, and selenate, which is the anion derived from selenic acid. Barium selenate is known for its low toxicity compared to other barium compounds, but it should still be handled with care due to the potential health risks associated with selenium. In terms of stability, it is generally stable under normal conditions but may decompose at elevated temperatures. The compound can be synthesized through the reaction of barium salts with selenic acid or selenate salts. Overall, barium selenate is an important compound in both industrial and research settings, particularly in the fields of materials science and environmental chemistry.

CAS 7787-41-9

Barium selenate