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On an industrial scale, barium chloride is prepared via a two step process from barite (barium sulfate). [8] The first step requires high temperatures. BaSO 4 + 4 C → BaS + 4 CO. The second step requires reaction between barium sulfide and hydrogen chloride: BaS + 2 HCl → BaCl 2 + H 2 S. or between barium sulfide and calcium chloride:
Coloured flames of methanol solutions of different compounds, burning on cotton wool. From left to right: lithium chloride, strontium chloride, calcium chloride, sodium chloride, barium chloride, trimethyl borate, copper chloride, cesium chloride and potassium chloride. Some common elements and their corresponding colors are:
To produce highly pure barium sulfate, the sulfide or chloride is treated with sulfuric acid or sulfate salts: BaS + H 2 SO 4 → BaSO 4 + H 2 S. Barium sulfate produced in this way is often called blanc fixe, which is French for "permanent white". Blanc fixe is the form of barium encountered in consumer products, such as paints.
Barium, typically as barium nitrate imparts a yellow or "apple" green color to fireworks; [30] for brilliant green barium chloride is used. Barium peroxide is a catalyst in the aluminothermic reaction for welding rail tracks. It is also a green flare in tracer ammunition and a bleaching agent. [31]
This page provides supplementary chemical data on barium chloride. Material Safety Data Sheet. SIRI; Science Stuff (Dihydrate) Structure and properties.
A few typical hardening agents include carbon monoxide gas (CO), sodium cyanide and barium carbonate, or hardwood charcoal. In gas carburizing, carbon is given off by propane or natural gas. In liquid carburizing, the carbon is derived from a molten salt composed mainly of sodium cyanide (NaCN) and barium chloride (BaCl 2). In pack carburizing ...
Barium perchlorate can be prepared using many different reagents and methods. One method involves evaporating a solution containing barium chloride and an excess of perchloric acid. The dihydrate form is produced by recrystallizing and drying to a constant weight. Additional drying over sulfuric acid yields the monohydrate.
Barium carbonate is the inorganic compound with the formula BaCO 3. Like most alkaline earth metal carbonates , it is a white salt that is poorly soluble in water. It occurs as the mineral known as witherite .