Barium Tellurate, BaTeO₄

Barium Tellurate, BaTeO₄, is formed as a voluminous precipitate by mixing solutions of barium chloride and a neutral tellurate. It is only slightly soluble in cold water, but is much more soluble in hot, and very soluble in nitric acid. It contains 3 molecules of water which it loses above 200° C. The density of the hydrated salt is 4.48 at 16° C., and of the anhydrous salt 4.2.

An acid salt, BaH₂Te₂O₈, which is more soluble than the neutral salt and is decomposed by water, is also known, as well as a salt containing four equivalents of acid to one of barium.