Cupric iodate

TABLE 19.9. Solubility of Cupric Iodate in Aqueous Solutions of KCl at 25°C... 

Keefer, R.M. Interaction of ions and dipolar ions. IV. The solubility of cupric iodate in glycine and in alanine solutions, J. Am. Chem. Soc., 70(2) 476-479, 1948. 

Cupric iodate, Cu(I03)2.—Solution of cupric hydroxide or carbonate in a solution of iodic acid yields the iodate, which is known in the anhydrous form,1 and as monohydrate,2 and dihydrate.3 From excess of a solution of potassium iodate, cupric nitrate precipitates the pale-blue monohydrate. At 25° C. its solubility is 3-3 X 10-3 gram-molecules per litre of water.4 A basic iodate, Cu(I03)2,Cu(0H)2, has also been prepared.5... 

The potentiometric micro detection of all aminophenol isomers can be done by titration in two-phase chloroform-water medium (100), or by reaction with iodates or periodates, and the back-titration of excess unreacted compound using a silver amalgam and SCE electrode combination (101). Microamounts of 2-aminophenol can be detected by potentiometric titration with cupric ions using a copper-ion-selective electrode the 3- and... 

In order to balance mineral intake, the following minerals were used in place of the usual mineral mix (% of diet) potassium chloride, 0.32 magnesium oxide, 0.084 manganous carbonate, 0.0123 ferric nitrate, 0.021 zinc carbonate, 0.0056 cupric carbonate, 0.0011 potassium iodate, 0.0004 sodium selenite, 0.00003 chromium potassium sulfate, 0.00193. 

Sulphates of the alkali and alkaline earth metals, when heated with sulphur, are converted into sulphide, polysulphide and thiosulphate, with simultaneous formation of sulphur dioxide many other sulphates, e.g. those of copper, mercury, silver and lead, yield only sulphide.7 Other salts of the metals behave in a similar- manner, undergoing transformation into sulphides, the change being effected more readily with the salts of the heavy metals, many of which indeed react slowly with sulphur even at 100° C. in the presence of water.8 At 150° to 200° C. mercuric, stannic and ferric salts in aqueous solution are quantitatively reduced by sulphur mercurous, cupric, bismuth and lead salts arc slowly but quantitatively precipitated as sulphides. Nitrates, permanganates and iodates cause oxidation of the sulphur to sulphuric acid. 

Cuprous Acetate, Cu(C2H302) wh crysts, de-compg rapidly in air can be prepd by heating cupric acetate to ca 250° (Ref 1). Cuprous acetate was patented by DeMent (Ref 7) as an ingredient of the following smoke-producing compn cuprous acetate 1.5, K iodide 0.6, K iodate 0.6,... 

Copper(ll) lodate,Cu(l03)2, wh to It blue crysts, decomp rapidly on heating. Can be prepd by dehydrating its monohydrate (It blue or blue-grn crysts), which can be prepd by treating a cupric salt soln with Na iodate Refs 1) J. Martinez-Cros L. LeBoucher,... 

The rates of reaction of hypophosphorous acid with iodine bromine ", chlorine ", iodine chlorides , iodate , selenious and tel-lurous acids, silver nitrate , cupric chloride and mercuric chloride" (all forming phosphorous acid or phosphites) have been measured, and the results of the earlier work summarized clearly" . All the data are consistent with the hypothesis that there is prior transformation to some reactive form (I). This form (I) does not discriminate very effectively between different oxidants and thus the oxidation steps are presumed to have rates close to the diffusion-controlled limit. The rates of formation of I deduced in these studies are close enough to the rates of deuterium and tritium exchange for the residual difference to represent an isotope effect. Mitchell wrote the formula H5PO3 for I. Others have supposed it to be a tautomer e.g. HPO(OH)2. Both the isotopic exchange results and the oxidation studies require that its formation and decomposition be subject to acid catalysis. For the general mechanism... 

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