Barium acetate iodate

Crucibles fitted with permanent porous plates are cleaned by shaking out as much of the solid as possible, and then dissolving out the remainder of the solid with a suitable solvent. A hot 0.1 M solution of the tetrasodium salt of the ethylenediaminetetra-acetic acid is an excellent solvent for many of the precipitates [except metallic sulphides and hexacyanoferrates(III)] encountered in analysis. These include barium sulphate, calcium oxalate, calcium phosphate, calcium oxide, lead carbonate, lead iodate, lead oxalate, and ammonium magnesium phosphate. The crucible may either be completely immersed in the hot reagent or the latter may be drawn by suction through the crucible. 

As already pointed out, some of the products of periodate oxidation, especially the mixed acetals from the glycosidic derivatives of the sugars, are readily hydrolyzed by acids. Although the known compounds of this type are stable in dilute aqueous solution of iodic acid at room temperature, heating the acid solution would be expected to cause hydrolysis. Before isolation of these oxidation products, the reaction solution customarily is neutralized to a pH of 8-9. Barium hydroxide and strontium hydroxide have proved to be advantageous bases for neutralization of the reaction solution, since iodate and excess periodate are largely removed at the same time as the slightly soluble barium or strontium salts. Silver acetate and hydriodic acid also have been used to remove iodic add.128... 

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