Peroxygen sodium perborate

Perbora.tes, Sodium perborate [7632-04-4] is the most widely used soHd peroxygen compound. Commercially it is available as a tetrahydrate [10486-00-7] and a monohydrate [10322-33-9]. The tetrahydrate is produced by treating a borax solution with hydrogen peroxide and sodium hydroxide ... 

Duplex (2) A process for making sodium perborate from both sodium peroxide and hydrogen peroxide. Developed in the United States from the 1920s and used until the development of the present process, which uses hydrogen peroxide as the only source of the peroxygen. See also Acid. 

Separate peroxygen bleaches, hydrogen peroxide, or its sources like sodium perborate or sodium percarbonate from water to prevent premature reaction, such as by suspending the solids between surfactant lamellae in the structured liquid. 

Inorganic peroxygens have also been used to oxidize sulfur centres, particularly sodium perborate, which is excellent for oxidizing electron-deficient sulfides to sulfones.412 Sodium perborate tetrahydrate has been used to stereo-specifically oxidize a-methylbenzylamine thiols in acetic acid.413 The use of organic peracids such as MCPBA was not found to be stereospecific for the above mentioned oxidation. 

If substituents on the sulphur are more electron-withdrawing, or to obtain faster reaction, activated peroxygen systems can be used to make sulphoxides, overoxidation to sulphones being minimised simply by controlling temperature and addition rate, at the correct molar ratio. Examples include H2O2 catalysed by tungsten(VI), vanadium(V) [213], molybdenum(VI) [214], or selenium(IV) [215], and peracetic acid (which, as for epoxidations, works better in non-protic media) [216]. Sodium perborate in acetic acid is also effective [217]. 

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