What is "barium chloride"

n. (context inorganic compound English) The barium salt of hydrochloric acid, BaCl₂; it is toxic, and has been used as a rat poison.

Barium chloride is the inorganic compound with the formula Ba Cl. It is one of the most common water-soluble salts of barium. Like other barium salts, it is toxic and imparts a yellow-green coloration to a flame. It is also hygroscopic.

This page provides supplementary chemical data on barium chloride.