Rubidium selenites

Within the estimated uncertainty this value agrees with [82WAG/EVA]. 

Micka and Ebert [86M1C/EBE2] measured the water vapour pressure of saturated solutions in the system Rb2Se03-H2Se03-H20. From these measurements they calculated the selected Gibbs energy of the reaction  

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Rubidium selenite was prepared and the very hygroscopic substance was dried in a vacuum desiccator over phosphorus pentoxide. The crystalline state was controlled by X-ray diffraction and chemical analyses agreed with the expected composition for Rb2Se03. A specimen of the preparation was reacted with a lead nitrate solution in an... 

V., Preparation of rubidium selenite and its heat of formation, Zh. Fiz. Khim., 43, (1969), 1398-1402, in Russian, English translation in [69KLU/SEL4], Cited on pages 427, 511. 

X-ray, thermal, spectroscopic, and chemical techniques have been employed in investigating the thermal behaviour of rubidium selenite up to 1273 K. At 453 K some small decomposition to selenium occurs oxidation in air begins at 583 K producing Rb2Se03,3Rb Se04. This melts at 1263 K without decomposition. ... 

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. 

Rubidium trihydrogen selenite RbH3(Se03)2 is orthorhombic with a = 5.9192, b = 17.9506, and c = 6.2519 A, space group The structure... 

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