CAS No.: 12230-71-6
Molecular formula: BaH18O10
Molecular weight: 315.46
Melting point: 78 °C(lit.)
Soluble: 56 g/L (15 ºC)
Sensibility: Air Sensitive & Hygroscopic
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Barium Hydroxide Octahydrate
Barium hydroxide is used in analytical chemistry for the titration of weak acids, particularly organic acids. Its clear aqueous solution is guaranteed to be free of carbonate, unlike those of sodium hydroxide and potassium hydroxide, asbarium carbonate is insoluble in water. This allows the use of indicators such as phenolphthalein or thymolphthalein(with alkaline colour changes) without the risk of titration errors due to the presence of carbonate ions, which are much less basic. Barium hydroxide is used in organic synthesis as a strong base, for example for the hydrolysis of esters and nitriles.
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