Sodium perhydroxide

On addition of 30 per cent, peroxide to sodium hydroxide or ethoxidc a precipitate of sodium perhydroxide is obtained to which the formula 4 2NaH02. H202 is given. This possesses marked basic properties, and on saturation with carbon dioxide yields the acid percarbonate,5 NaHC04. The same compound is formed when hydrogen peroxide is added to sodyl hydroxide,4 NaO. OH. This latter substance was first prepared by Tafel6 by the action of sodium peroxide upon well-cooled absolute alcohol. 

Sodium perhydroxide, NaH02.—When absolute ethyl alcohol reacts with sodium peroxide at 0° C., a perhydroxide of the formula 0 Na-0H is produced, a reaction discovered by Tafel 6... 

The substance is a white powder, and undergoes explosive decomposition when heated in the dry condition, oxygen being evolved and sodium hydroxide formed. It is soluble in water, and under the influence of heat the solution decomposes without explosion, the products formed being similar to those obtained from the dry substance.6 Another perhydroxide supposed to have the formula Na-O-OH is produced by the interaction of sodium ethoxide and hydrogen peroxide ... 

Sodium monopersulphate, Na2S06.—This salt is produced by the interaction of barium perhydroxide and sodium hydrogen sulphate 14... 

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