in not given concentrating a soln. of 1 mol Na2CO3 and 2 mol SeO2 over H2SO4; crystallization;;
参考文献
Gmelin Handbook: Na: MVol., 226, page 638 - 639
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反应条件
in neat (no solvent) byproducts: Al(OH)3; heating a mixture of SeO2 with a small excess of Na2O2 in a porcelain crucible; formation of a light brown melt; dissolving the melt in water; removal of an excess of Na2O2 on passing in CO2; pptn. of NaOH and Al(OH)3 formed by react. with the crucible;; filtration; crystallization on concentrating on a water bath; repeated recrystallization from hot water; drying in a desiccator; formation of an anhydrous salt by crystallization above 30 °C;;
