Last time I looked at analyses of contaminants in peroxide, food grade
has as much as grocery store 3%. Just slightly different ones.
Apparently peroxide is so caustic (not the right word but you get the
idea) that it strips and picks up contaminants from every pipe and
container it goes through during production. Food grade may not have
stabilizers, but it is not free of extraneous contaminants.
sol
Marshall Dudley wrote:
This is what I use (or the Kroger equivalent):
http://www.walgreens.com/store/product.jhtml?CATID=302248&id=prod1176&skuid=sku301176&navAction=push&navCount=1
It appears that 3% H2O2 is typically stabilized with Sodium Stannate
That does contain tin. Tin is NOT a bad heavy metal. It has an atomic weight
just 11 higher than silver, and has been used as a coating for tin cans for
decades. Sodium Stannate has a health rating of "1", which is not too bad (
http://www.jtbaker.com/msds/englishhtml/s4994.htm ). It has a Oral rat LD50:
3457 mg/kg, which makes it only slightly toxic.
Just brushing your teeth with over the counter toothpaste with stannous fluoride
would likely give you a much bigger dosage than a couple of drops of 3% H2O2.
So, it is true I really don't like it being in there, but it is necessary to
stabilize it, and in small quantities should not be an issue.
Marshall
"Dr. David W. Kenney" wrote:
Are you using over the counter peroxide. It is said that it contains some
heavy metals...are you worried.
Wouldn't food grade be safer?
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