Re: Curious about Liquid propellants....

> On Wed, 09 Jul 2003 20:07:48 +0000, Diane > is alleged to have written: > > >Do a web search and you'll find LOTS of sources for food grade > >peroxide. > > > >Also you seem to be confusing "concentration" with "purity". Speaking > >strictly of "concentration", lesser concentrations of H2O2 are far > >less susceptible to spontaneous decomposition from organic or metallic > >"impurities" in such things as the storage container - hence lesser > >concentrations of peroxide are considered more stable during storage - > >which is why that bottle of bleach your wife (may) keep under the sink > >doesn't blow up the bathroom . > > Because bleach is an aqueous solution of sodium hypochlorite, and has > nothing whatsoever to do with hydrogen peroxide?

I suspect that Diane was referring, not to laundry bleach, but to hair bleach, for which peroxide _is_ used - at a concentration of something like 8%, though, rather than the higher concentrations used for propellant (which would not only bleach your hair but quite likely set fire to it...)

-dave w

Reply to
David Weinshenker
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The "bleach" used in dying one's hair is indeed H2O2 - hence the term "peroxide blonde".

Reply to
Diane

And to add to the confusion, there are now "green" laundry bleaches available at the supermarket that are based on H2O2. This is to reduce active chlorine in the environment, and the potential for forming organochlorines in our water cycle.

Reply to
Marcus Leech

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