Barium Hydroxide

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Related to baryta: Baryta carbonica

barium hydroxide

[′bar·ē·əm hī′dräk‚sīd]
(inorganic chemistry)
Ba(OH)2·8H2O Colorless, monoclinic crystals, melting at 78°C; soluble in water, insoluble in acetone; used for fat saponification and fusing of silicates.

Barium Hydroxide

 

caustic baryta, Ba(OH)2, a base (alkali). Under ordinary conditions it exists in the form Ba(OH)2-8H20—colorless crystals with a density of 2.18 g/cm3. At 78° C it melts in its own water of crystallization. It is readily soluble in water (3.5g BaO in 100 g H20 at 20° C). The aqueous solution has a strongly alkaline reaction. The saturated aqueous solution of barium hydroxide at ordinary temperatures is called baryta water; upon contact of this solution with air, it absorbs CO2 and becomes turbid owing to the precipitation of barium carbonate. Barium hydroxide is a sensitive reagent for carbonate and sulfate ions. It initiates polymerization reactions and is also used in the production of sugar.

References in periodicals archive ?
In this case, the medicine was Baryta sulphuricum (barium sulfate).
Alan's initial response to the first two doses of Baryta sulphuricum was promising.
Hopwood says: "Real photo baryta on the Matt FB Mp product offers enhanced color brightness, archival properties, and tonal range.
Other salts, mostly iodides, that have successfully treated thyroid conditions include Arsenicum iodatum (arsenic iodide), Aurum iodatum (gold iodide), Baryta iodatum (barium iodide), Calcarea iodatum (calcium iodide), Ferrum iodatum (iron iodide), lodum (iodine), Kali iodatum (potassium iodide), Lithium iodatum (lithium Iodide), Magnesium iodatum (magnesium iodide), Mercurius iodatum flavus and ruber (two mercury iodides), Natrum iodatum (sodium iodide), and Natrum muriaticum (sodium chloride).
Luden expects the same reaction for the new HARMAN Photo Inkjet Paper Range, with a baryta layer, launched last fall at photokina 2006 in Cologne, Germany.