On Wed, 21 Jan 2009 02:57:36 -0800 (PST), wrote:

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A lot of these contain chemicals that produce hydrogen peroxide when
used. These often feature 'oxi' in the name. The actual chemical used
is often sodium perborate, ...

Partially the progenitor of the brand name "Persil" (actually from
perborate and silicate), I was once told.