Barium nitrite is a chemical compound with the formula , the nitrous acid salt of barium. It is a water-soluble white to yellowish powder. It is used to prepare other metal nitrites, such as lithium nitrite.
__TOC__ Synthesis Barium nitrite can be prepared by reacting barium nitrate with lead metal sponge, or by reaction of lead nitrite with barium chloride.
The monohydrate can be crystallized from a stoichiometric solution of barium chloride and sodium nitrite.
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