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Encyclopedia > Selenic acid

Selenic acid, H2SeO4, is an oxygen acid of selenium. General Name, Symbol, Number selenium, Se, 34 Chemical series nonmetals Group, Period, Block 16, 4, p Appearance gray, metallic luster Atomic mass 78. ...


Selenic acid is analogous to sulfuric acid and has similar properties; however, it is a stronger oxidizer. Sulfuric acid (British English: sulphuric acid), H2SO4, is a strong mineral acid. ...


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Process for the preparation of 1-hydroxylated vitamin D compounds - Patent 4554105 (6947 words)
A process as claimed in claim 1 wherein the selenous acid is generated in situ by the use of selenium dioxide in the presence of water.
It will be appreciated that the water reacts with the selenium dioxide to produce selenous acid at a relatively slow rate which is in part dependent on the water concentration or the ratio of water to selenium dioxide.
Where selenous acid is used as oxidant directly, rather than being formed from selenium dioxide and water, the reaction mixture is preferably buffered.
National Pollutant Inventory Substance Profile (2416 words)
Selenous acid forms hygroscopic, colourless crystals that melt at 70 °C. Its boiling point is 315 °C, with a specific gravity 3.0.
Selenic acid forms white crystals that melt at 58 °C. Its boiling point is 260 °C. Selenium hexafluoride is a very toxic colourless gas (melting point -39 °C, boiling point -35 °C).
Selenous acid can be found in gun blueing solution which is used to clean the metal parts of a gun.
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