Lithium selenite

The crystal structures of a handful of ternary anhydrous selenites are known, and NaLa(Se03)2 and NaY(Se03)2,230 containing additional Na+ ions, the copper phases M2Cu(Se03)4 (M=La-Tb)231,232 and the lithium selenite Li3-Lu5(Se03)9233 should be mentioned. The copper selenites show the M3+ ions in... 

Lithium selenite, Li2Se03.—Nilson10 has described the monohydrate, LijSeOgjH, silky needles of slight solubility and has also prepared two acid salts, LiHSe03 and LiH3(Se03)2. 

The ionic conductivity of the selenite ion in water was determined by measuring the molar conductivities of a series of aqueous solutions of lithium selenite with concentrations below 2 x 10" M. The molar conductivity at infinite dilution was found by extrapolation to be (172.0 2.9) ohm -cm mor. With the ionic conductivity of Li equal to 33.4 ohm -cm -mor, the ionic conductivity of the selenite ion becomes 105.2 ohm -cm -moT. This value was then combined with the ionic conductivity of the metal ion to find the molar conductivity of the dissolved selenite. 

KLU/SEL] Klushina, T. V., Selivanova, N. M., Poltavtseva, L. S., Heat of formation of lithium selenite monohydrate, Zh. Neorg. Khim., 12, (1967), 2546-2549, in Russian, English translation in... 

Older methods of preparing furanthiols and their derivatives have been overshadowed by lithiation techniques in which the metallated furan is treated with sulfur and alkylated to give the desired alkylthiofurans.198,199 Phosphoryl thioesters are obtained in the same way, as are their selenium equivalents.200 2-Furyllithium affords lithium furan-2-selenite when treated with selenium dioxide.201... 

Crystalline lithium hydrogen selenite was prepared and checked by X-ray and chemical analysis. The enthalpy of the reaction between a solution of the salt and Pb(N03)2(cr) was determined as well as the heat of dissolution of LiHSeOs. The experimental findings are furnished in Table A-65, in which the enthalpy change of the reaction LiHSeOsCcr) + Pb —> PbSeOsCcr) + Li + H is calculated. 

Li2Si03 LITHIUM METASILICATE 983 MgSe03 MAGNESIUM SELENITE 1029... 

Miscellaneous compounds Cesium trihydrogen selenite Lithium trihydrogen selenite Potassium selenate Methyl ammonium alum (MASD) Ammonium cadmium sulfate Ammonium bisulfate Ammonium sulfate Ammonium nitrate Colemanite Cadmium pyroniobite Gadolinium molybdate... 

EXPLOSION and FIRE CONCERNS combustible solid NFPA rating (NA) reacts to form explosive products with metal amides contact with acids may cause formation of poisonous hydrogen selenide gas incompatible or reacts violently with barium carbide, bromine pen-tafluoride, chromic oxide, fluorine, lithium carbide, lithium silicon, metals, nickel, sodium, nitric acid, nitrogen trichloride, oxygen, potassium, potassium bromate, rubidium carbide, zinc, silver bromate, uranium, strontium carbide, and thorium carbide toxic gases and vapors may be released in a fire involving selenium, sodium selenite, sodium selenate, and selenium dioxide use water for firefighting purposes. 

Lithium hydrogen selenite has been prepared in 95% yield by neutralization of a selenious acid solution with LiOH to pH 4—4.5. 

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