Air & Water Reactions
Soluble in water.
Crystallise it twice from water (4mL/g) and dry it overnight at 110o. It decomposes at higher temperatures to give mostly the oxide and the peroxide with only a little of the nitrite. POISONOUS. [Ehrlich in Handbook of Preparative Inorganic Chemistry (Ed. Brauer) Academic Press Vol I p 941 1963.]
Barium nitrate,Ba(N03)2 forms white crystals that are soluble in water at 20°C. It is formed by the reaction of barium carbonate or barium hydroxide with nitric acid.
Inhalation or contact with eyes or skin causes irritation. Ingestion causes excessive salivation, vomiting, colic, diarrhea, convulsive tremors, slow, hard pulse, elevated blood pressure. Hemorrhages may occur in the stomach, intestines, and kidneys. Muscular paralysis may follow.
manufacture of BaO2; pyrotechnics for green fire; green signal lights; in the vacuum-tube industry.
Barium nitrate is a stable, strong oxidiser. It is incompatible with combustible material,
reducing agents, acids, acid anhydrides, and moisture-sensitive substance. Barium nitrate
is poisonous, is a respiratory irritant, and is hazardous if mixed with flammable materials.
Barium oxide plus zinc, aluminium and magnesium alloys are combustibles (paper, oil,
wood), acids, and oxidisers and is hazardous. Mixtures with finely divided aluminium–
magnesium alloys are easily ignitable and extremely sensitive to friction or impact.
Barium nitrate mixed with aluminium
powder, a formula for flash powder, is highly explosive. However, barium nitrate is noncorrosive
in presence of glass. It is used in military thermite grenades, in the manufacturing
process of barium oxide, in the vacuum tube industry, and in pyrotechnics for green fire.
A white crystalline solid. Noncombustible, but accelerates burning of combustible materials. If large quantities are involved in fire or the combustible material is finely divided, an explosion may result. May explode under prolonged exposure to heat or fire. Toxic oxides of nitrogen produced in fires.
Mixtures of metal nitrates with alkyl esters may explode, owing to the formation of alkyl nitrates. Mixtures of nitrates with phosphorus, tin(II) chloride, or other reducing agents may react explosively [Bretherick 1979 p. 108-109].