Lithium iodate

Lithium iodate [13765-03-2] M 181.9. Crystd from water and dried in a vacuum oven at 60°. 

Sodium iodate dissolves copiously in warm dil. sulphuric acid without decomposition but it is decomposed by hydrochloric acid. The presence of potassium iodide causes potassium iodate to dissolve more readily than in pure water and although A. Ditte says that a double salt is not obtained from the soln., yet the phenomenon is probably due to the formation of a complex salt in soln. J, N. Bronsted measured the solubility of potassium iodate in aq. soln. of potassium hydroxide. Potassium iodate does not dissolve in alcohol. According to H. L. Wheeler, 100 grms. of water at 23° dissolve 21 grms. of rubidium iodate, and 26 grms. of caesium iodate at 24°. The specific gravity of a sat. aq. soln. of lithium iodate 52 at 18° is 1 568 thesp. gr. of soln. of potassium iodate calculated by G. T. Gerlach. from P. Kremers data, are ... 

Lithium iodate, LiIOa.—The iodate is obtained by neutralizing iodic acid with lithium carbonate or hydroxide, the salt crystallizing from aqueous solution in very deliquescent crystals of pearl-like lustre. It is doubtful whether they consist of the anhydrous salt or have the formula LiI03,JH20.5 At 18° C., 100 grams of water dissolve 80-3 grams of the anhydrous salt. 

This quantity is the source of the second harmonic and is determined from its intensity and the macroscopic optical parameters. If the intensity of the optical input is also measured and the static field strength known then the susceptibility in the equation can be calculated. In practice the intensity of the SHG is measured relative to a known standard that for solution work has usually been quartz, occasionally lithium iodate. In the gas phase a calculated value for an inert gas has been used. The macroscopic third order susceptibility has to be related to the response functions for the active molecule in the solution. 

There is, therefore, a large and unaccountable difference between the absolute values of Paley et al. and other groups for the 0.01% solution. If these values were consistent with each other it would demonstrate the equivalence of the quartz and lithium iodate standards but the large discrepancy leaves the issue in doubt. In the second set of adjusted results in column B for Paley et al., the values have been recalibrated using 0.5625 x 10 esu as the reference for the 1% MNA solution. In the two cases the results of Paley et al. are, respectively higher and lower than the other sets of results which are in much better mutual agreement. 

Potassium iodate Lithium iodate Potassium nitrate Sodium nitrate Rubidium nitrate... 

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