Search results
Results from the WOW.Com Content Network
Barium carbonate is made commercially from barium sulfide by treatment with sodium carbonate at 60 to 70 °C (soda ash method) or, more commonly carbon dioxide at 40 to 90 °C: In the soda ash process, an aqueous solution of barium sulfide is treated with sodium carbonate: [5] BaS + H 2 O + CO 2 → BaCO 3 + H 2 S
BaMnO 4: barium manganate: 7787–35–1 Ba(MnO 4) 2: barium permanganate: 7787–36–2 BaMoO 4: barium molybdate: 7787–37–3 Ba(NO 2) 2: barium nitrite: 13465–94–6 Ba(NO 3) 2: barium nitrate: 10022–31–8 BaN 6: barium azide: 18810–58–7 Ba(NbO 3) 2: barium niobate: 12009–14–2 BaO: barium oxide: 1304–28–5 Ba(OH) 2: barium ...
Barium carbide can be synthesized as an impure compound by reducing barium carbonate powder with metallic magnesium in the presence of carbon. [3] Barium carbide can also be made by reducing carbon dioxide with hot barium metal at 600°C. [4] These methods are used because of their high yield, and because the carbide is used to make acetylene.
n.o.s. = not otherwise specified meaning a collective entry to which substances, mixtures, solutions or articles may be assigned if a) they are not mentioned by name in 3.2 Dangerous Goods List AND b) they exhibit chemical, physical and/or dangerous properties corresponding to the Class, classification code, packing group and the name and description of the n.o.s. entry [2]
Barium hydroxide is used in analytical chemistry for the titration of weak acids, particularly organic acids. Its aqueous solution, if clear, is guaranteed to be free of carbonate, unlike those of sodium hydroxide and potassium hydroxide, as barium carbonate is insoluble in water.
Barium oxide from metalic barium readly forms from its exothermic oxidation with dioxygen in air: 2 Ba(s) + O 2 (g) → 2 BaO(s). It's most commonly made by heating barium carbonate at temperatures of 1000–1450 °C. BaCO 3 (s) → BaO(s) + CO 2 (g) Likewise, it is often formed through the thermal decomposition of other barium salts, [6] like ...
Barium selenide can be obtained by the reduction of barium selenate in hydrogen flow:. [3] [5] BaSeO 4 + H 2 → BaSe + 4 H 2 O. It can also be obtained by reacting selenium with barium carbonate or barium oxide at high temperature: [citation needed] 2 BaCO 3 + 5 Se → 2 BaSe + 3 SeO 2 + CO 2
Witherite is a barium carbonate mineral, Ba C O 3, in the aragonite group. [2] Witherite crystallizes in the orthorhombic system and virtually always is twinned. [2] The mineral is colorless, milky-white, grey, pale-yellow, green, to pale-brown. The specific gravity is 4.3, which is high for a translucent mineral. [2]